Cabanas-Sánchez Verónica, Tejero-González Carlos M, Veiga Oscar L
Departamento de Educación Física, Deporte y Motricidad Humana, Universidad Autónoma de Madrid, Madrid, España.
Rev Esp Salud Publica. 2012 Jul-Aug;86(4):435-43. doi: 10.4321/S1135-57272012000400010.
One of the main problems of health in the first world is the increase of physical inactivity. In this respect, adolescence has been identified as a critic period with high decline of physical activity. Therefore, a relevant line of research is the understanding of this social phenomenon. The aim of this study was to design a scale to assess perceived barriers to physical activity on adolescents.
A convenience sample of 160 Spanish adolescents (84 girls), between 12 and 18 years old, was recruited for this study. Firstly, there were designed 40 items whose pertinence was evaluated through content validation by experts. Later, the participants were divided in two randomized groups, and Exploratory Factor Analysis and Confirmatory Factor Analysis were performed to define a short scale of 12 items. Cronbach Alfa Coefficent was used to evaluate internal consistence of the instrument.
The scale reports four dimensions: incompatibility barriers (2 items), self-concept barriers (4 items), amotivation barriers (4 items) and social barriers (2 items). The scale showed enough construct validity (χ2=60.78; d.f.=48; p=0.100; GFI=0.88; CFI=0.94; RMSEA=0.58) and high internal reliability (α=0.80). Moreover, the scale was able to explain 67% of the data variance.
The Short Scale of Perceived Barriers to Physical Activity in Adolescents is a valid and reliable instrument.
在第一世界，健康的主要问题之一是身体活动的减少。在这方面，青春期被认为是身体活动急剧下降的关键时期。因此，一个相关的研究方向是对这一社会现象的理解。本研究的目的是设计一个量表来评估青少年身体活动的感知障碍。
本研究招募了160名12至18岁的西班牙青少年（84名女孩）作为便利样本。首先，设计了40个项目，并通过专家进行内容验证来评估其相关性。随后，将参与者随机分为两组，进行探索性因素分析和验证性因素分析，以确定一个由12个项目组成的简短量表。使用克朗巴哈阿尔法系数来评估该工具的内部一致性。
该量表报告了四个维度：不相容障碍（2个项目）、自我概念障碍（4个项目）、无动机障碍（4个项目）和社会障碍（2个项目）。该量表显示出足够的结构效度（χ2=60.78；自由度=48；p=0.100；GFI=0.88；CFI=0.94；RMSEA=0.58）和较高的内部信度（α=0.80）。此外，该量表能够解释67%的数据方差。
青少年身体活动感知障碍简短量表是一个有效且可靠的工具。
