Miyoung Lee1, Weimo Zhu2, Elizabeth Ackley-Holbrook3, Diana G Brower4, Bryan McMurray2. 1. Department of Sport, Health, and Rehabilitation, Kookmin University, South Korea. Electronic address: mylee@kookmin.ac.kr. 2. University of Illinois at Urbana-Champaign, USA. 3. Roanoke College, USA. 4. Wisconsin Center for the Blind and Visually Impaired, USA.
Abstract
BACKGROUND: It is critical to employ accurate measures when assessing physical activity (PA) barriers in any subpopulation, yet existing measures are not appropriate for persons with blindness or visual impairment (PBVI) due to a lack of validity or reliability evidence. OBJECTIVE: To develop and calibrate a PA barrier scale for PBVI. METHODS: An expert panel (n = 3) and 18 PBVI were recruited to establish content validity for a PA barriers subscale; 160 PBVI (96 females) completed the scale along with the Physical Activity Scale for Individuals with Physical Disabilities for calibration. To establish construct-related validity evidence, Confirmative factor analysis (CFA) and Rasch analysis were applied. To investigate internal consistency and reliability, Cronbach's alpha and the reliability coefficient (R) were employed, respectively. RESULTS: Following CFA and Rasch analyses, five items were eliminated due to misfits; reliability coefficients were unchanged upon deletion of these items. The barriers perceived by PBVI to have the most negative impact on PA included "lack of self-discipline" (logit = 1.40) and "lack of motivation" (logit = 1.27). "Too many stairs in the exercise facility" (logit = -1.49) was perceived to have the least impact. CONCLUSIONS: The newly-developed scale was found to be a valid and reliable tool for evaluating PA barriers in PBVI. To enhance promotion of health-producing levels of PA in PBVI, practitioners should consider applying this new tool as a precursor to programs aimed at improving PA participation in this group.
BACKGROUND: It is critical to employ accurate measures when assessing physical activity (PA) barriers in any subpopulation, yet existing measures are not appropriate for persons with blindness or visual impairment (PBVI) due to a lack of validity or reliability evidence. OBJECTIVE: To develop and calibrate a PA barrier scale for PBVI. METHODS: An expert panel (n = 3) and 18 PBVI were recruited to establish content validity for a PA barriers subscale; 160 PBVI (96 females) completed the scale along with the Physical Activity Scale for Individuals with Physical Disabilities for calibration. To establish construct-related validity evidence, Confirmative factor analysis (CFA) and Rasch analysis were applied. To investigate internal consistency and reliability, Cronbach's alpha and the reliability coefficient (R) were employed, respectively. RESULTS: Following CFA and Rasch analyses, five items were eliminated due to misfits; reliability coefficients were unchanged upon deletion of these items. The barriers perceived by PBVI to have the most negative impact on PA included "lack of self-discipline" (logit = 1.40) and "lack of motivation" (logit = 1.27). "Too many stairs in the exercise facility" (logit = -1.49) was perceived to have the least impact. CONCLUSIONS: The newly-developed scale was found to be a valid and reliable tool for evaluating PA barriers in PBVI. To enhance promotion of health-producing levels of PA in PBVI, practitioners should consider applying this new tool as a precursor to programs aimed at improving PA participation in this group.
Authors: Giuditta Carretti; Daniela Mirandola; Eleonora Sgambati; Mirko Manetti; Mirca Marini Journal: Int J Environ Res Public Health Date: 2022-04-07 Impact factor: 4.614
Authors: Rosie K Lindsay; Francesco Di Gennaro; Peter M Allen; Mark A Tully; Claudia Marotta; Damiano Pizzol; Trish Gorely; Yvonne Barnett; Lee Smith Journal: Int J Environ Res Public Health Date: 2021-11-09 Impact factor: 3.390