The role of preparatory heart rate deceleration on balance beam performance

Preparatory heart rate deceleration occurs in tasks with an external focus of attention and is often assumed to facilitate balance performance. However, its effects upon sport-related complex balance movements have not been studied. Heart rate patterns during the preparation period of an acrobatic element (flic-flac) on the balance beam were studied in 14 female gymnasts (M age 13.2 years). A significant heart rate deceleration was found in attempts with a fall in the consecutive acrobatic element, but not in attempts without a fall. These data suggest that preparatory heart rate deceleration may be detrimental to the performance of complex movements on the balance beam.     

运动营养补剂对机体乳酸脱氢酶和肌酸激酶的影响研究

通过查阅大量文献资料,阐述了运动营养补剂的研究情况,综述了运动营养补剂时机体乳酸脱氢酶和肌酸激酶的影响,以期为运动营养补剂的运用及新的研究方向提供理论参考依据。     

高等院校体育教学社会心理环境现状的调查与研究

运用访谈法、问卷调查法、比较研究法和体育统计法对天津市十七所高等院校体育教学社会心理环境状况进行了详细的调查研究.特别针对在不同性别、不同班级人数和学生从宿舍到达运动场地的不同距离等条件下对体育教学社会心理环境的影响,并进行比较分析得出相应的结论与建议.