Research purpose: The purpose of this study is to investigate the different social stratification and influence to the physical activity of parents with child at primary school age and investment on their child’s involvement in physical activity. Research methods: Questionnaire Survey was used as the method for investigation. 970 questionnaires were distributed randomly to parents selected from three primary schools in Tianjin with children of four-grade and five-grade and N=863 valid questionnaires returned. The questionnaire asked parents basic information, social stratification, physical activity (daily physical activity and physical exercise) and investment on their child’s involvement in sport(spiritual support, financial support, accompanied time and given opportunity) . Results: 1). When parents from high were compared, middle and low social class were compared, "physical activity", "spiritual support", "financial support" and "given opportunity" were significantly higher of parents from high social class, but the "daily physical activity" was significantly lower (p<.01). There was no significant difference on the "accompanied time" (p>.05). 2). There were significance correlation between "daily physical activity", "physical exercise" and social stratification (r=0.22 and 0.25, p< .01), and significance correlation were also appeared between "emotional support", "financial support", "given opportunity" and social stratification(r=0.20, 0.25 and 0.17, p< .01). 3). The use of social stratification vi and physical activity on parents to predict "investment on their child’s involvement in sport" was appeared with predictive power of 21%. The highest predictive power was "physical exercise". Research conclusions: 1). The physical activity and investment on their child’s involvement in parents from high social class were significantly higher than parents from low and middle social class. 2). There were significance correlation between the physical activity and investment on their child’s involvement. It appeared that the higher of social stratification, the higher of physical activity and investment on their child’s involvement. 3). It appeared that there were significant predictive power for the social stratification and physical activity for parents to investment on their child’s involvement, and the highest predictive power was the "physical exercise".

研究目的：本研究目的在於探討不同家庭社會層級的父母身體活動及其對 子女體育投入的關係，以及家庭社會分層與父母身體活動對「父母對子女體育 投入」之預測能力。 研究方法：本研究採用問卷調查法，隨機選取天津市某三所小學四、五年 級學生家長 970 人，共回收有效問卷 863 份。問卷內容包括：基本資訊、家庭 社會分層、身體活動（日常體力活動與體育鍛煉）以及對子女體育投入（精神 支持、資金支持、陪伴時間和機會給與）四個部分。 研究結果：1）.與中、低家庭社會階層父母相比，高家庭社會階層的父母「體 育鍛煉」、「精神支持」、「資金支持」和「機會給與」顯著較高，但「日常 體力活動」顯著較低（p< .01），在「陪伴時間」無顯著性差異（p> .05）。2）. 小學生父母的「日常體力活動」及「體育鍛煉」兩層面與家庭社會層級之間有 顯著相關（r= -0.22 及 0.25，p< .01）；對子女體育投入的分層面「精神支持」、 「資金支持」與「機會給與」三層面與家庭社會層級之間有顯著相關（r=0.20、 0.25 及 0.17，p<.01）,但屬低相關。3）.家庭社會分層及父母身體活動對「父母 對子女體育投入」的顯著預測力為 21%，對分層面之「精神支持」、「陪伴時 間」、「資金支持」與「機會給與」的顯著預測力分別為 8%、16%、17%及 9%， 預測力最高的是「體育鍛煉」。 研究結論： 1）.高家庭社會階層的父母身體活動及其對子女體育投入之差 iv 異顯著高於中、低家庭社會階層的父母身體活動及其對子女體育投入。2）.小學 生父母的身體活動及其對子女體育投入與家庭社會層級之間存在顯著相關。家 庭社會層級越高的父母，身體活動及其對子女體育投入越大；身體活動水準越 高的父母，對子女體育投入越大。3）.家庭社會分層及父母身體活動對父母對子 女體育投入有顯著預測力，預測力最高為「體育鍛煉」。