Camp Abilities – an educational sports camp for children and youth with visual impairment: A systematic review

Camp Abilities (CA) is an educational summer camp for children and youth with visual impairment (VI), developed in 1996 by Dr Lauren Lieberman at The State University of New York at Brockport and implemented internationally. The uniqueness of the program is that it provides opportunities for sports exposure and motor development, teaching physical education (PE) and adapted physical education (APE) for undergraduate and graduate students and research. CA has contributed to numerous publications but, to date, no systematic review has been published. Therefore, the aim of this study was to conduct a systematic review of quantitative studies conducted in CA, to document the themes investigated, to analyze the characteristics of the studies and the effects of interventions delivered, and to synthesize the results. This process identified 24 articles that examined 11 research themes. It identified several key findings, research gaps to guide future research, as well as practical implications for practitioners.


Introduction
Children and adolescents with visual impairment (VI) are considered to be at risk for sedentary lifestyles and obesity.Indeed, their physical activity (PA) participation (Augestad & Jiang, 2015;Haegele & Poretta, 2015) as well as their motor competence and perceived motor competence (PMC) tend to be lower than those of their sighted peers (Brian, Starrett, Pennell, Haibach-Beach, Gilbert, et al., 2021;Stribing et al., 2022;Wagner et al., 2013).This may be due to a number of barriers that limit access to PA (Armstrong et al., 2018;Robinson & Lieberman, 2004) such as limited access to physical education (PE) lessons, lack of training and professional preparation of teachers to adapt the lessons, lack of equipment, and lack of knowledge to adapt the school curriculum (Columna et al., 2019;Lieberman et al., 2002).In their families, the barriers reported by parents are fear of injury, beliefs about their child's abilities, lack of opportunities, and lack of training from coaches (Linsenbigler, 2018;Stuart et al., 2006).Finally, youth themselves may constitute barriers by perceiving themselves as inferior and less competent than their sighted peers (Brian, Tauton, Haibach-Beach & Lieberman, 2018;Stuart et al., 2006).To overcome these barriers and provide access to PA, Camp Abilities (CA) developed in 1996 by Dr Lauren Lieberman at The State University of New York at Brockport is an educational sports camp for children and youth with VI, blindness, or deafblindness (Furtado et al., 2017;Haegele et al., 2014).In 1996, the first edition of the CA served 27 campers-athletes with VI under the supervision of about 30 professionals.Since then, CA served more than 4000 students at over 22 locations across the United States and in countries including Canada, Costa Rica, Finland, Ireland, Guatemala, Portugal, Bangladesh, Ghana, Kenya, and Switzerland.The uniqueness of the program is that it provides opportunities for (1) sports exposure and motor development for youth with VI, (2) teaching PE and adapted physical education (APE) undergraduate and graduate students how to teach youth with VIs, and (3) research (Furtado et al., 2018;Haegele et al., 2014;Lieberman et al., 2019).

The operational characteristics of CA
Participants, also called campers and/or athletes, are youth and adolescents with VI aged between 7 and 18 years.Campers must have a VI that requires a vision teacher.The official classification used in CA is the United States Association of Blind Athletes (USABA), in which vision levels are divided into four levels (B1, B2, B3, and B4) (USABA, 2017).CA accommodates between 20 and 55 campers each summer and lasts from 3 days to 1 week (Haegele et al., 2014).CA provides an opportunity to explore and overcome personal physical limitations while learning to advocate for oneself (Goodwin et al., 2011;Lieberman & Childs, 2020).Most directors of CA have an academic background in APE, PE, special education, or a related field, and often hold a university position.Their primary responsibilities include facilitating collaboration with university facilities, recruiting sports specialists and coaches, and directing undergraduate and graduate student research.Sports specialists and coaches are responsible for teaching specific sport lessons.Coaches, also called counselors, work in a one-on-one relationship with campers throughout the camp.Coaches are 18 years of age or older and are students in training from different fields such as PE, APA, or orientation and mobility teachers.Training typically includes information about VI, teaching orientation and mobility, intervention strategies, and immersion in all sports activities offered during the week.Finally, each CA is responsible to fund their camp from different foundations according to the local partnerships developed (e.g., foundation, grants from local organizations, fundraisers, and donations) (Furtado et al., 2018).

Teaching
Sports, physical activities, and instructional strategies.The program teaches different sports and physical activities in the mornings and afternoons during 5 days of the camp week.Each sport is offered at least two times so that the athletes can progress.The sports offered include but are not limited to goalball, beep baseball, judo, track and field, swimming, tandem bike, stand up paddle board, blind soccer, and gymnastics.In the evening, other activities are also offered with recreational and social objectives, such as socialization among the participants.To adapt instruction, different modifications can be personalized to each athlete, such as modifying equipment, modifying rules, or adapting the environment, or using of different instructional strategies.Finally, CA allows teaching of the nine areas of instruction through infusion of the Expanded Core Curriculum (Lieberman et al., 2021).

Research
One of the strengths of this camp is that it brings together individuals from a population that is geographically dispersed, which facilitates research in this field.The involvement of undergraduate and graduate students in CA field research allows for the development of scientific skills and rich experience in presenting their work at conferences or symposiums.This collaborative strategy across CA locations is positive for strengthening the validity of the studies by increasing the sample size (Furtado et al., 2018).Since its inception, many researchers have conducted research at CA.However, to date, no systematic review of the literature or synthesis of knowledge has been published.A systematic review of CA is relevant for several reasons.First, it will allow to identify all the studies carried out in the CA and the themes studied, as well as the different instruments used.In addition, it will allow the various directors of CA to become aware of the studies published to date and the themes studied, which could be inspiring for the development of new research.Finally, it allowed us to identify gaps in the subjects studied in order to orient future research.Therefore, the aim of this study was to conduct a systematic review of quantitative studies conducted in CA.Specifically, the objectives of this systematic review are (1) to identify all quantitative studies conducted in CA; (2) to document the themes investigated in the selected studies; (3) to analyze the characteristics of the studies and the effects of interventions delivered; and (4) to synthesize the results.

Study selection
The literature review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines (Page et al., 2021).In order to identify relevant studies, the following electronic databases were consulted: Web of Science, OvidSP, EBSCOhost, and SAGE Journals from 1996 (corresponding to the first year of CA) up to 2022.In addition, a contact with the director and founder of CA allowed a verification of the publications by consulting the resume and the ResearchGate profile.The keywords used in the research were visual impairment, camp abilities, summer camp.

Inclusion and exclusion criteria
To be included in the review, each study had to be written in English, peer-reviewed, and published in academic journals.As established by the Population, Intervention, Comparison, Outcome, Time (PICOTS) method (Hartmann et al., 2012), the following criteria were defined: Population (P) of the study must be defined by the authors as children or adolescents with VIs, aged 7-18 years, with or without other disabilities; Intervention (I) should be conducted during CA; Comparison (C), no comparative intervention was necessary; Outcomes (O) or results should have been quantitative data collected during CA; Timing (T), the study must be published between 1996 (corresponding to the first year of CA); and Setting (S) of study should have been CA.Studies could be descriptive or experimental, testing the effects of an intervention conducted during CA.Exclusion: Studies were excluded for different reasons, such as qualitative studies or theorical articles on CA without results.This procedure identified 271 articles.A first selection of 36 articles was made after reading the titles, the keywords, and the abstract.Next, a full reading of the articles resulted in 19 articles that met all inclusion criteria.Five additional articles were identified by snowball effect and direct contacts with researchers involved in CA.Finally, a total of 24 studies were included in the systematic review.Figure 1 presents the flowchart diagram based on PRISMA guidelines and summarizes the procedure (Page et al., 2021).

Data extraction
A data form was used to extract key information from the studies.The study specifications were categorized following the classification used by Haegele et al. (2015).Five categories were utilized: (1) descriptive studies describe a given state of affairs without describing relationships or differences between groups; (2) intervention studies attempt to establish a cause-and-effect relationship with pre-post measures; (3) correlational studies explore relationships between variables; (4) comparative studies use techniques to test for differences between different groups of participants; and (5) validation studies examine the psychometric qualities of instruments.For each study, data were extracted on the characteristics of the studies, themes investigated, instruments used and main findings were extracted.As this systematic review aims to provide an overview of the studies, the results will be summarized by presenting the main findings without reporting the statistical analysis to lighten the results.The included studies were presented in different tables and then detailed by theme chronologically to present the evolution of the themes over the years.

Quality assessment
Assessment of study bias was performed according to the criteria used in another systematic review in the field of adapted PA (Furtado et al., 2017), which was an adaptation of Downs and Black (1998).Eight criteria were applicable for descriptive, correlational, comparative and validation design (n = 20 studies) and ten criteria were applicable for intervention studies (n = 4 studies).For each criterion, the score Yes was given if the criterion was present (1 point) and No if it was not present (0 point).The score obtained for each study was converted into a percentage and evaluated according to the quality classification proposed by Furtado et al. (2017).The quality of the study was considered Bad if the score was 21%-40%, Poor if the score was 41%-60%, Fair if the score was 61%-80%, and Good if the score was 81%-100%.

Interrater agreement
To ensure the validity of this method, several precautions were taken.First, the process of searching for articles in the databases was performed simultaneously by two researchers.Second, the risk of bias assessment was performed by two investigators on 25% of the studies (n = 6) (O' Keeffe & McNally, 2021).For each study, the sum of items in agreement between the two researchers, divided by the total number of items, yielded an agreement score of 78%.The authors felt that this score was insufficient and discussed their scoring to refine certain sub-criteria.As a result of this process, a second assessment of agreement was made with an average of 89% considered to be good.

Study description
The studies analyzed were all conducted in the United States, with the exception of one study done jointly in the United States and Latvia.Among the 24 articles selected, 15 studies used a descriptive design (Σ = 653 participants, x= 45.53 participants/article; SD = 37.01); three studies used correlational design (Σ = 223 participants, x= 74.33 participants/article; SD = 59.94.7), one study used correlation and validation design (Σ = 57 participants), and one article used a comparative design (Σ = 23 participants).Of the four studies that used an intervention design with participants with VI (Σ = 127 participants, x̄ = 42.33 participants, SD = 33.95),two used a control group of youth with VI who did not attend a camp and one study did not use a control group.Finally, the studies used a population of coaches without a control group (Σ = 18 participants).

Participants and camps
The participants were divided into three groups: athletes with VI (AVI) (n = 22 studies, Σ = 1083 participants, M age = 13.8);one article with coaches (CO) (Σ = 18 participants, M age = 23); and one article combined AVI with their parents (PAR) (Σ = 50 participants).Regarding the classification of VI, studies used the classification proposed by USABA, two studies used the International Classification of Diseases (ICD)-10 classification, one used the IBSA classification, and one article did not mention the classification as article that examined coaches.Of the 24 studies, 18 articles studied participants from a single camp (Σ 693 participants; 650 AVI, 18 coaches, and 25 parents) including a sample between 12 and 54 participants (x − = 38 participants/article).In five studies, multiple camps were combined (between 2 and 7 camps), resulting in larger sample sizes (Σ = 569 participants, x − = 81 participants/article).Brian, Starrett, Pennell, Haibach-Beach, Gilbert et al. (2021) used a sample of 138 participants but did not mention how many camps were involved.Table 1 presents the characteristics of studies.

FMS.
Seven studies assessed FMS of AVI with the Test of Gross Motor Development version II or III (TGMD-II/III) (Σ = 437 participants, M age = 14.64; x − = 62.43 participants/article).This test evaluates the FMS with two subtests that include locomotion skills contains six items (run, jump, hop, skip, gallop, and slide) and object control/ball skills contains seven items (catch, kick, strike with a bat, strike with a racquet, underarm throw, overhand throw, and dribble) (Brian et al., 2019;Brian, Fisher et al., 2021;Brian, Starrett, Pennell, Haibach-Beach, Gilbert, et al., 2021;Brian, Starrett, Pennell, Haibach-Beach, Tauton, et al., 2021;Haibach et al., 2014;Stribing et al., 2022;Wagner et al., 2013).First, Wagner et al. (2013) compared the scores of children with VI (n = 23) and sighted children (n = 28) using TGMD-II.The results indicated that children who are blind performed with lower performance scores than their sighted peers in all locomotor and object control skills assessed.Running, jumping, kicking, and catching were the skills most impacted.The most significant effect between the children with VIs and their sighted peers were found in the children who are blind (B1 group).Haibach et al. (2014) aimed to analyze scores on different motor skill fundamentals as a function of age, gender, and level of VI (B1-B3) with TGMD-II.The results showed that the severity of VI was significantly associated with locomotor skill performance but not age.The B2 (travel blindness) and B3 groups (legal blindness) performed better than the B1 group (total blindness).Age and gender were both significantly associated with performance for object control skills (boys perform better than girls).Based on these results, the researchers concluded that the severity of VI was a significant factor in performance in all gross motor domains assessed.Specifically, children in the B1 group showed a significantly lower performance than children in the B2 and B3 groups (both of which had similar performance).A third study addressed this topic through a longitudinal studies exploring data (N = 34) (Brian, Starrett, Pennell, Haibach-Beach, Gilbert, et al., 2021).The objectives of this study were to explore and describe the developmental trajectory of locomotor skills (with TGMD-III), body mass index (BMI) over 3 years, and analyze the differential effects of gender and degree of vision.The results obtained from the analysis of the developmental trajectory of the youth's FMS provided an alarming finding that results in significant motor delay.On average, the youth with VI had made little or no progress in their locomotor skills over the past 3 years.Indeed, the locomotor scores on the TGMD-3 reached a plateau around 27-29, meaning that the sample presented a significant developmental delay, translating a locomotor development of children of 5.5 years for an average age of 11.75, thus translating a delay of about 6 years.The results of the BMI analysis had moved in the opposite direction and had increased over the years.These two trajectories indicate a ceiling in FMS and an increase in BMI, regardless of gender or degree of vision.Three studies used correlational design to examined FMS of AVI (Brian et al., 2019(Brian et al., , 2022;;Stribing et al., 2022).Brian et al. (2019) examined associations among FMS (divided into locomotor and object control skills measured with TGMD-3), health-related fitness (HRF), BMI, and home-and sport-camp based PA for 66 AVI.The results confirmed that FMS and HRF are correlates with PA.Brian et al. (2022) examined the relationship between motor competence with TGMD-3, the PMC evaluated with the Test of Perceived Physical Competence-VI (TPPC), and the Physical activity with Physical Activity Questionnaire (PAQ) of 138 AVI (M age = 13.37 years).
The results indicated that the FMS predicted PMC, which predicted PA.In other words, PMC had a mediation effect on FMS but no significant relation was documented between FMS and PA.Stribing et al. (2022) also used TGMD-3 to examine the association among different variables (locomotor skills; age; gender; and degree of vision on self-perception, parent's perceptions, and meta-perceptions).Conclusions indicated a significant difference in locomotor skills based upon the degree of vision, but not for any factor.As vision decreased, locomotor skills decreased for B1-B4.Finally, Brian, Fisher et al. (2021) also examined this topic with a validation and correlation study of the test Total Body Developmental Sequences (TDBS), a tool that measures FMS accross nine gross motor skills that practitioners can use to assess their students or clients during play or PE.Consequently, the authors concluded that TDBS could be used as an alternative for TGMD, since this tool represents more constraint and more time to adminster.This tool therefore represents a simplified and valid version of assessing the FMS of youth with VI that is easily used in practice.In conclusion, studies that examined FMS showed poorer skills than sighted youth and the longitudinal study confirmed that these delays increased over time.The more vision is affected, the more locomotor skills are diminished.Thus, youth with VI reach a plateau in FMS as well as an increase in BMI.These results have important consequences for their self-perception and that of their parents.
PMC. Six studies examined the theme of PMC (Brian, De Meester et al., 2018;Brian et al., 2022;Brian, Tauton, Haibach-Beach & Lieberman, 2018;Shapiro et al., 2005Shapiro et al., , 2008;;Stribing et al., 2022; Σ = 363 participants, M age = 13.79;x= 60.5 participants/article).The first study that examined this theme is Shapiro et al. (2005) with a sample of 43 AVI using The Self-Perception Profile for Children (SPPC) and The Self-Perception Profile for Adolescents (SPPA).This study documented the PMC before and after 1-week camp as well as the influence of gender and age.The results indicated that gender and age did not influence pre-camp perceptions, but girls' perception scores (of physical ability and physical appearance) were better after 1 week of camp.In addition, the findings revealed that the children discounted the importance of physical appareance, athletic competence, and social acceptance and had a moderately high rating of global or overall self-esteem (Shapiro et al., 2008).Furthermore, Brian, De Meester, et al. (2018) combined SPPC, SPPA with an evaluation of PMC with Children and Youth Physical Self-Perception Profile (CY-PSPP), competence satisfaction with Basic Psychological Need Satisfaction and Frustration Scale (BPNSFS), and motivation with Behavioral Regulation in Exercise Questionnaire (BREQ).The results highlighted that AVI had the lowest perception of motor skills than sighted peers.In addition, older children also revealed significantly lower levels of perception of motor skills than younger children.
Brian, Tauton, Haibach-Beach, & Lieberman (2018) compared the PMC before and after the camp with The Self-Perception Profile for Children (SPPC); The Self-Perception Profile for Adolescents (SPPA) and Perceived Athletic Competence Subscale of AVI and experimental group (n = 79, M age = 12.71; control group = 20 AVI) were recruited from a school for deaf and blind students.The pre-camp measurement indicated that there was no difference between the groups for PMC.After 6 days of camp, the results revealed significantly higher levels of PMC than participants in the control group at posttest.Perceived motor skill levels among participants in the maintenance group (6 weeks later) were not significantly different from posttest to maintenance.In other words, the results of the experimental group confirmed that an intensive week of accessible sports can improve PMC in the short term (immediately after the camp), but also in the medium term, because the results were maintained over time (after 6 weeks).More recently, Brian, Starrett et al. (2022) also examined PMC and the relationship with FMS and PA of 138 AVI using the TGMD-3, TPPC-VI, and the PAQ.As mentioned in the "FMS" section, the results indicated that the FMS predicted PMC.More specifically, PMC mediated the pathway from locomotor competence to PA.Finally, Stribing et al. (2022) explored the relationship between FMS, PMC using TPPC for VI, parents perception and the representation that youth have of their parents' perception (metaperception), and the differential effect of age, gender, and degree of vision.The results indicated that only degree of vision affected locomotor skills, but gender and age did not.Moreover, the authors concluded a signficant association among locomotor and self-perception, degree of vision and locomotor, and metaperception with parent's perception.In conclusion, the authors examined the theme of PMC, which highlighted that FMS as well as vision could affect self-perception and parents' perceptions.Nevertheless, these perceptions can improve with camp participation and be maintained over time.
PAB. Four studies examined the topic of PA levels (Σ = 263 participants, M age = 13.09;x= 65.75 participants/article) (Armstrong et al., 2018;Brian et al., 2019Brian et al., , 2022;;Tindall et al., 2017).Tindall et al. ( 2017) conducted a study with two aims: (1) to determine the number of activities and percentage of time spent on moderate-to-vigourous PA (MVPA) by athletes during CA and (2) to determine whether significant differences exist between the different types of sports (Σ = 18 participants; M age = 13).The level of PA of AVI was assessed using the Actigraph GMI accelerometer during differents sports (track and field, gymnastic, goalball, judo, and beep baseball).The findings suggest that there was a significant effect of activity type on both the intensity and time spent in MVPA.Armstrong et al. (2018) examined the level of Physical Activity using the Physical Activity Questionnaire for Children and Adolescents (PAQ-C/-A) (Σ = 41 participants between 8 to 18).The results indicated a low level of PA and significant differences between groups B1 and B2 as well as B2 and B3.Children with B1 vision were more active than children with B2 vision and children with B3 vision were also more active than those with B2 vision.The results indicated that PA level scores were correlated with self-efficacy and barrier scores.The second aim of this study was to examine the psychometric properties of the tool Physical Activity Barrier Questionnaire-Visual Impaired (PABQ-VI).The results indicated that participants with higher levels of PA perceived fewer barriers and had a higher sense of self-efficacy.Finally, Brian et al. (2019Brian et al. ( , 2022) ) also examined this theme by looking at the relationship between PA, self-perception, and FMS.Their conclusions indicated that FMS, perceptions, and PA level were related.Physical activity level is a predictor of motor skills, so the more active the youth is, the more they develop their skills and perceptions of those skills.
Walking.Two studies investigated walking through evaluation of the number of steps of AVI using pedometers (Σ = 57 participants, M age = 12.9; x − = 28.5 participants/article) (Beets et al., 2007;Lieberman et al., 2006).Lieberman et al. (2006) compared the walking behavior (number of steps a day) of youth during a normal week and during a CA week with the tool Brookstone Talking Pedometer (Σ = 22 partcipants between 9 and 13).The results indicated that participants' step counts were higher (15,000 steps/day) during the week of camp compared with a week of regular school (9000 steps/day).Beets et al. (2007) compared the reliability of three brands pedometers with voice announcement (Centrios Talking Pedometer, TALKiNG Pedometer, Sportline Talking Calorie Pedometer 343) and a reference pedometer without vocal announcement (NL2000) (Σ = 35 participants, M age = 12.9).Overall, the results support that the reference pedometer is not affected by placement but that the pedometers with vocal demonstrate acceptable accuracy for right-hand placement, suggesting that this position is necessary for AVI.
Exergames.Three studies investigated this theme (Σ = 37 participants; M age = 12.6; x= 12.33 participants/article).Boffoli et al. (2011) compared the level of pleasure of the youth with VI during three exergames (Dance Dance Revolution Extreme, Eye Tonic Kinetic and Wii Boxing) with the Physical Activity Enjoyment Scale (PACES) instrument.The results indicated that the level of pleasure is not different from one game to another.Morelli et al. (2010) compared youths' energy expenditure with the use of multimodal (tactile/audio) versus unimodal (audio) feedback cues during a game of VI-TENNIS (n = 13).Although the expenditure was not different with the two versions, the multimodal feedback were judged to be more attractive and more fun by the youth.Morelli et al. (2011) analyzed the Pet-N-Punch exergame that used tactile/audio, comparing the version using one or two arms (N = 12) on energy expenditure measured with accelerometer.The authors concluded that the use of this exergame enabled youth to achieve MVPA, regardless of the version used.
Physical condition and fitness.Two studies examined this theme (Σ = 218 participants, M age = 12.9; x= 109 participants/article).Lieberman et al. (2010) assessed the fitness of athletes with VI with The Brockport Physical Fitness Test (BFPT) (n = 152 AVI) and analyzed the impact of gender and vision level on the success rate.The results showed no significant difference in any of the five variables of physical condition by level of vision or gender.However, the results indicated that cardiovascular endurance upper body and body composition were areas that needed to be improved upon with this population, as the scores obtained were 50% and below.Brian and colleagues (2019) also examined this theme in association with FMS and PA (Σ = 66 participants, M age = 12.93) using BMI, TGMD-3, actigraph, and HRF test with Brockport Physical Fitness Test.The authors concluded that visual acuity influenced motor competence but not HRF or PA measures and concluded that their hypothesis, which states that motor competence and HRF are correlated with PA, is confirmed.
Functional body image.One study examined this theme (Σ = 20 participants, M age = 11.75).Belknap et al. (2022) investigated the theme of body image by comparing the functional body image of AVI (n = 20) and without VI (n = 20) with the tool EIS, as well as the relationship with PA with the questionnaire Children's Assessment of Participation and Enjoyment.Conclusions showed that AVI had lower satisfaction and investment in their functional body image than their peer without VI.However, the participation in organized sports and active physical recreation had a positive influence on functional body image.
Beliefs.One study examined the value parents place on their children's PA and the barriers to PA that children face with The Subjectivity task value inventory and the questionnaire of self-efficacy based on Bandura's theory (Stuart et al., 2006) (Σ = 25 parents and 25 athletes with VI, M age = 11).The results revealed that parents' expectations of their child's physical ability were influenced by their child's level of vision as was their child's opinion of the importance or usefulness of PA.The less vision the child had the less value the parents placed on PA.
Knowledges nutrition.Celeste-Williams et al. (2010) addressed the topic of nutrition by analyzing the effects of a nutrition knowledges taught during CA using the MyPiramid-based questionnaire (Σ = 36 AVI, 8 participants control group).In addition, the influence of vision level and age was investigated to assess whether these factors influenced the learning of the knowledge taught.The results indicated a significant difference showing a significant improvement in knowledge for the experimental group compared with the control group, and that age and vision had no effect on nutrition knowledge acquisition.This study confirms that the nutrition training program offered during CA was effective in teaching knowledge to AVI.

Self-determination.
One study investigated this theme with The Self-Determination Exercise Scale: Student Edition (Robinson & Lieberman, 2004) (Σ = 54 participants).The purpose of this study was to investigate the effects of VI, gender, and age on opportunities for self-determination in five contexts (at home, with friends, health care, at school, and in PE).The results indicated that gender and age do not influence self-determination, but the level of vision does influence opportunities, especially in school and health care.In other words, the lower the level of vision, the less opportunity participants have to make choices and activities independently and the choices are made by another person.
Self-efficacy of coaches.Finally, one study has examined the topic of self-efficacy of preservice PE teachers with the Self-Efficacy Scale for Physical Education Teacher Education Majors toward Children with Disabilities (SE-PETE-D) (Foley et al., 2020) (Σ = 18 coaches).Participants significantly improved their perceived self-efficacy in teaching AVI as well as other disabilities after 1 week of involvement at the CA.Table 2 summarizes the themes and instruments used in each research study.

Quality assessment
The average overall quality is 89.13% (corresponding to good).More specifically, average quality for 20 descriptive studies is good (95.63%) as well as for intervention studies (87.5%).Among the methodological strengths of the studies analyzed, the criteria # 1-9 obtained a good score (81% and more).In the studies analyzed, these criteria are translated into good reporting (clear objectives, clear description of main outcomes, detailed description of participants, and main findings), good external validity (representativeness of population), and good internal validity (use of valid instruments and appropriate statistical tests to measure main outcomes).However, criteria # 4 obtained a fair quality (75%); these criteria were applicable only for four intervention studies.This weakness is reflected in the incomplete information reported concerning the intervention offered.Finally, criteria #7 scored poorly (58%), reflecting a weakness in the external validity, resulting in partial information about the practitioners (or the person who collected the research data).Table 3 presents the results of risk of bias assessment.

Discussion
This systematic review of quantitative research conducted at CA reveals a tremendous amount of information related to 11 themes.While the majority of studies are descriptive (Lieberman, 2012), the analysis also identified intervention, correlational, comparative, and validation studies.This review described the trends studied through 11 themes in the three areas, namely (1) opportunities for youth with VI, (2) teaching experiences for graduate students, and (3) researchers (Furtado et al., 2018;Haegele et al., 2014;Lieberman et al., 2019).

Opportunites for youth with VI
One of the main themes examined in the articles was FMS.Brian, Tauton, Lieberman, et al. (2018) assessed the FMS of youth and adolescents with VI, mainly using the TGMD instrument, a test that is considered as valid and reliable to assess motor skills of youth with VI.Early identification of motor problems is crucial because inadequate motor performance can result in long-term consequences, including PA levels (Bakke et al., 2019;Haegele et al., 2015).Motor skill development, particularly for children with VI, is important as research has shown that they are often teased and ridiculed due to poor motor skills (de Schipper, et al., 2017).The TGMD test, originally developed by Ulrich and revised (Ulrich, 1985(Ulrich, , 2000(Ulrich, , 2017)), has been adapted for youth with VI and the third version provides suggestions for adapting the items by adding, for example, brightly colored material to delineate the space, verbal signs, or audio to help the youth orient in the correct direction (Brian, Tauton, Lieberman, et al., 2018).An alternative for researchers and practicioners to assess FMS is the Brief form of TGMD-3 (Brian, Starrett, Pennell, Haibach-Beach, Tauton et al., 2021) or TDBS (Brian, Fisher et al., 2021).Globally, the motor skill results of AVI participating in CA scored lower than their sighted peers, a finding that converges with the results of AVI not participating in CA (Haegele et al., 2015).Although the use of standardized instruments such as TGMD has been criticized (Giese et al., 2023), these findings are satisfying because it shows that CA researchers have integrated recent knowledge into their research using tools considered to be the gold standard that have been validated and adapted to youth with VI (Bakke et al., 2019).This argument is (1) Is the hypothesis/aim/objective of the study clearly described?(2) Are the main outcomes to be measured clearly described in the "Introduction" or "Method" section?(3) Are the characteristics of the patients included in the study clearly described ?(4) Are the interventions of interest clearly described?NA for descriptive studies (5) Are the main findings of the study clearly described?(6) Were the subjects asked to participate in the study representative of the entire population from which they were recruited?(7) Representativeness of staff, facilities.(8) Were the statistical tests used to assess the main outcomes appropriate?(9) Were the main outcome measures used accurate (valid and reliable)?(10) Did the study have sufficient power to detect a clinically important effect where the probability value for a difference being due to chance is less than 5%?NA for descriptive studies.
troubling as current research has also shown that youth with VIs are bullied and teased (Ball et al., 2021) and they do not feel good about their FMS (de Schipper et al., 2017) when they do not attain proficient motor skills.In this sense, a new avenue for the CA could be to discuss movement goals and assessments with the youth themselves and ask them what they would prefer and which skills are useful and meaningful.Moreover, given the broad CA objectives of influsing the components of the Expanded Core Curriculum to practice different types of skills (e.g., assistive technology, orientation, and mobility), a broader angle than FMS would be interesting to describe participants' functioning, especially since motor skills are related to adaptive behavior (Pineio et al., 2019).
A second opportunity for AVI is the improvement of their PMC.These themes were investigated by six articles, generally finding that AVI had lower perceptions, but that these perceptions could be improved and maintained following participation in a CA (Brian et al., 2018).In addition, these perceptions ares related to regular PA as well as to performance on motor skill assessments.Nevertheless, AVI tend to be more sedentary and engage less in PA (Augestad & Jiang, 2015;Haegele & Poretta, 2015).This review has identified some tools to assess the perception of motor skills (i.e., TPPC) (Brian et al., 2022), which is considered as valid and acceptable (Stribing et al., 2021).Nevertheless, measuring perceptions with pre-established criteria and norms could also be questioned.In this sense, other types of research, using a more qualitative method, would also make it possible to describe young people's perceptions of their skills, without fitting them into a pre-established norm of a standardized tool.CA represents other opportunities for youth with VI as experimentation of new interventions (i.e., exergames), nutrition program, or opportunity to develop new skills of the Expanded Core curriculum (Lieberman et al., 2021) or self-advocacy skills (Lieberman & Childs, 2020).As a result, a deeper understanding of these areas would be necessary to understand how young people are evolving or would like to be trained in these areas, combining the opinions of parents.
Teaching experiences Foley et al. (2020) revealed that improvements in perceived competence in teaching youth VI is extremely promising.This professional experience is therefore a rich experience considering that students and young professionals often feel they lack knowledge and training (Greguol et al., 2015;Lirgg et al., 2017;Sladewski et al., 2022).Thus, CA allows professionals to experiment new sports and test new adaptive equipment in a safe environment, circumventing the barriers associated with PA participation (Columna et al., 2019).

Research
For researchers, CA also represents a research laboratory as it allows for the combination of AVI from multiple camps to obtain larger samples (i.e., Haibach et al., 2014;Lieberman et al., 2010) as well as international collaborations (i.e., Brian, De Meester et al., 2018).CA also makes it possible to adapt tools specifically for youth with VI and to evaluate the psychometric properties of instruments in order to make them available to the scientific community (i.e., Brian, Fisher, et al., 2021;Stribing et al., 2021).Finally, CA provides a research vehicle to study many themes such as participant characteristics and the testing of different types of innovative and adapted interventions for youth with VI, such as exergames (Morelli et al., 2010(Morelli et al., , 2011) ) or the pedometer with voice announcement (Lieberman et al., 2006).Although not analyzed in this article, the CA also permits qualitative studies to explore themes such as youth motivation, meaning of camp (Goodwin et al., 2011), integration of ECC (Lieberman et al., 2021), outdoor adventure experiences (Lieberman et al., 2023), as well as teaching self-advocacy (Lieberman & Childs, 2020).

Conclusion
The aim of this systematic review was to identify, analyze, and summarize the themes from 24 quantitative studies conducted in CA.One of the strengths is the quality of studies as well as a variety of the themes examined.Nevertheless, one important limitation is the representativeness of participants and generalization of findings.Considering all participants were recruited from CA and not from the general population, generalizing the results to another population (e.g., students from schools for the blind) is a limitation to the generalization of the results.In addition, the representativeness of the participants-coaches may also be a bias as the staff involved in the studies were predominantly from CA Brockport, so it is possible that the professionals are more highly trained and supervised than in the other camps.Finally, another limitation of this systematic review is the involvement of the main director in the process of this study.The two lead researchers were not involved in the CA research, and conducted the systematic review of the articles independently of the other authors.Despite this fact, the use of the scale to assess the risk of bias, a subjective view of the research object (CA) could have influenced the assessment of study quality, as could the angle used by the authors to present the findings.Moreover, the results identify areas in need of further research.As a central goal of CA, assessment of FMS and the PMC remains a research priority, particularly with adapted and validated tools.Moreover, given the expanded goals of the CA, assessment of participants' skills in other developmental domains would be relevant, including assessment of social skills, adaptive behavior, and daily living skills could be the focus of future studies.In this sense, the translation and/or the adaptation of tools specifically designed for AVI represents an important area for CA researchers.To complement this analysis of quantitative CA studies, a second systematic review specifically targeting qualitative studies would be a complementary perspective.To date, CA researchers have examined the various research objects with a predominantly quantitative approach, although there are many studies that have been qualitative and included the voices of the athletes with VIs over the years.In the future, it would therefore be interesting to systematically analyze the qualitative research studies conducted in order to share the voice of the participants, parents, and coaches using the qualitative studies to illuminate the various areas studied.Additional qualitative research could also include the definition of FMS, the description of PMC, or how they would propose that barriers be circumvented to enable them to have access to PA.In terms of practical implications, this review has identified an inventory of tests that could be used in practice as well as intervention.Finally, the findings support the benefits of CA and suggest that programs in other countries could be developed following this model.

Table 1 .
Characteristics of studies.

Table 2 .
Themes and instruments used.