Study on relationship between occupational, leisure-time physical activity and other cardio-cerebrovascular disease risk factors
职业性、休閑性体力活动与其他心脑血管病危险因素关系
Study on leisure-time physical activities in non-sport major college students
对高师非体育专业大学生余暇体育的研究
The Centers for Disease Control and Prevention says 36% of U. S. adults didn't engage in any leisure-time physical activity in 200
美国疾病防备节制中央(CentersforDiseaseControlandPrevention)说,2008年,有36%的成年美国人在业余时刻不介入任何体育勾当。