There is a need for developing tools aimed at assessing fitness in children, due to its relationship with health. This study is aimed at testing the reliability and the validity of a questionnaire designed for assessing self-perceived health-related fitness in Spanish children. The questionnaire was created based on the model of physical self-concept developed by Fox and Corbin (1989) who conceived four sub-domains: Sport competence, attractive body, strength and physical condition. A total of 283 children (mean age: 10.80 ± 0.69 years; 45.6% girls) answered the questionnaire twice, in order to determine its test-retest reliability. The results obtained in the International Fitness Scale (IFIS) and on a fitness battery were used to determine its validity evidence based on relations to other variables. Exploratory and factorial analyses were performed to check its validity evidence based on internal structure. The obtained results indicated that the questionnaire showed an accurate validity evidence based on internal structure and a very good test-retest reliability, Intraclass correlation coefficient: .88; 95% CI [.84, .90]. The questionnaire established moderate correlations with the IFIS questionnaire (ρ = –.51 to –.68) and the fitness level showed by the children (ρ = –.53). These findings indicate that the questionnaire can be a useful research tool for assessing self-perceived health-related fitness in children.

中文翻译：

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西班牙儿童自我感知健康相关健康评估问卷的可靠性和有效性

由于其与健康的关系，因此需要开发旨在评估儿童健康状况的工具。本研究旨在测试旨在评估西班牙儿童自我感知健康相关健康状况的问卷的可靠性和有效性。该问卷是根据 Fox 和 Corbin（1989）开发的身体自我概念模型创建的，他们设想了四个子域：运动能力、有吸引力的身体、力量和身体状况。共有 283 名儿童（平均年龄：10.80 ± 0.69 岁；45.6% 的女孩）两次回答了问卷，以确定其重测信度。在国际健身量表 (IFIS) 和健身电池上获得的结果用于根据与其他变量的关系确定其有效性证据。进行探索性和因子分析以检查其基于内部结构的有效性证据。所得结果表明，该问卷基于内部结构显示出准确的效度证据，具有很好的重测信度，组内相关系数：0.88；95% CI [.84, .90]。该问卷与 IFIS 问卷 (ρ = –.51 至 –.68) 和儿童显示的健康水平 (ρ = –.53) 建立了中度相关性。这些发现表明，问卷可以成为评估儿童自我感知健康相关健康状况的有用研究工具。组内相关系数：0.88；95% CI [.84, .90]。该问卷与 IFIS 问卷 (ρ = –.51 至 –.68) 和儿童显示的健康水平 (ρ = –.53) 建立了中度相关性。这些发现表明，问卷可以成为评估儿童自我感知健康相关健康状况的有用研究工具。组内相关系数：0.88；95% CI [.84, .90]。该问卷与 IFIS 问卷 (ρ = –.51 至 –.68) 和儿童显示的健康水平 (ρ = –.53) 建立了中度相关性。这些发现表明，问卷可以成为评估儿童自我感知健康相关健康状况的有用研究工具。