20~59岁成年人身体素养评价指标体系的实证研究

Empirical Research on the Physical Literacy Assessment Model for Adults Aged 20 to 59 Years

目的:研究团队前期构建了包含身体活动(physical activity,PA)认知、PA相关行为和身体能力3个维度的成年人身体素养评价指标体系,用于成年人身体素养的评估,但其尚未经过信效度验证。因此,研究的目的是验证成年人身体素养评价指标体系的信效度。方法:基于已构建的身体素养评价指标体系编制测评条目,并采集了731名20~59岁成年人的身体素养数据,用于检验身体素养评价指标体系的信效度。项目分析法用于筛选条目;信度检验采用Mc Donald’sω系数及组合信度(composite reliability,CR);结构效度检验采用验证性因子分析;收敛效度采用因子载荷、CR和平均方差抽取量(average variance extracted,AVE)评价;区分效度通过AVE平方根是否大于各维度间的相关系数判断。结果:通过项目分析,形成了包含56个评价条目的成年人身体素养测评工具。验证性因子分析结果显示,整体模型拟合效果良好(χ^(2)/df=4.502、RMSEA=0.07、GFI=0.96、CFI=0.91、PNFI=0.64),因子载荷介于0.24~0.92之间,身体素养及各维度的CR值分别为0.64、0.77、0.4、0.56,AVE值分别为0.4、0.58、0.26、0.2。身体素养各维度间呈显著低相关(r=0.221、0.347、0.282,P<0.01),各维度的AVE平方根分别为0.76、0.51、0.45,大于其与其他维度间的相关系数。身体素养测评工具及其各维度的ω系数分别为0.49、0.49、0.7、0.64。结论:构建的成年人身体素养测评体系及测评工具具有较好的信效度,可作为我国成年人身体素养评价乃至PA与健康促进综合效果评价的有效工具。

Objective:The physical literacy assessment model for Chinese adults is a measure of physical activity(PA)cognition,behavior related PA,and physical competence used to assess physical literacy(PL)in Chineseadults.However,its measurement properties have not been reported in the published literature.The purpose of thisstudy is to evaluate the reliability and validity of the early constructed PL assessment model for Chinese adults.Methods:We developed assessment items according to the PL assessment model constructed in the early stage.PLdata of 731 adults aged 20 to 59 years were collected.Item analysis was applied to screen items.We used McDonald’sωcoefficient and composite reliability(CR)to test the reliability of the PL assessment model and tool for adults.Confirmatory factor analysis(CFA)was used to evaluate the structural validity.Convergent validity was evaluatedby factor loading,CR and average variance extracted(AVE).The discriminant validity was judged by whether thesquare root of AVE was greater than its correlation coefficient with other dimensions.Results:A PL assessmenttool for adults containing 56 items was developed through the item analysis.The results of CFA showed that the PLassessment model was well fitted(χ~2/df=4.502,RMSEA=0.07,GFI=0.96,CFI=0.91,PNFI=0.64).The factorloading ranged from 0.24 to 0.92.The CR of PL tool and its dimensions were 0.64,0.77,0.4 and 0.56,respectively.The AVE was 0.4,0.58,0.26 and 0.2,respectively.There was a significantly low correlation between the dimen-sions of PL(r=0.221,0.347,0.282,P<0.01).The square root of AVE of the dimensions of PL was 0.76,0.51 and0.45,respectively,which were greater than its correlation coefficient with other dimensions.Theωcoefficient was0.49 for the PL assessment tool and was separately 0.49,0.7 and 0.64 for its dimensions.Conclusions:The PLassessment model and tool for Chinese adults have good reliability and validity,which can be used as an effectivetool to assess the PL level of Chinese adults and the comprehensive effect of PA and health promotion.