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体育常态课运动负荷的调控
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作者 张海平 《体育教学》 2017年第11期15-16,共2页
对体育常态课运动负荷进行调控,教师要在课堂中教会学生自测心率,并记录数据,体育课的平均心率须在120—150~k./分,并持续20分钟以上;体育教师须应对各种外界因素,适时调控运动负荷,提高课堂练习的有效性和科学性,同时避免运... 对体育常态课运动负荷进行调控,教师要在课堂中教会学生自测心率,并记录数据,体育课的平均心率须在120—150~k./分,并持续20分钟以上;体育教师须应对各种外界因素,适时调控运动负荷,提高课堂练习的有效性和科学性,同时避免运动负荷过大的“训练课”和运动负荷过小的“放羊课”的产生。 展开更多
关键词 体育常态课 运动负荷 自测心率 调控
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Automatic detection of respiratory rate from electrocardiogram,respiration induced plethysmography and 3D acceleration signals 被引量:2
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作者 刘官正 吴丹 +2 位作者 梅占勇 朱青松 王磊 《Journal of Central South University》 SCIE EI CAS 2013年第9期2423-2431,共9页
Respiratory monitoring is increasingly used in clinical and healthcare practices to diagnose chronic cardio-pulmonary functional diseases during various routine activities.Wearable medical devices have realized the po... Respiratory monitoring is increasingly used in clinical and healthcare practices to diagnose chronic cardio-pulmonary functional diseases during various routine activities.Wearable medical devices have realized the possibilities of ubiquitous respiratory monitoring,however,relatively little attention is paid to accuracy and reliability.In previous study,a wearable respiration biofeedback system was designed.In this work,three kinds of signals were mixed to extract respiratory rate,i.e.,respiration inductive plethysmography(RIP),3D-acceleration and ECG.In-situ experiments with twelve subjects indicate that the method significantly improves the accuracy and reliability over a dynamic range of respiration rate.It is possible to derive respiration rate from three signals within mean absolute percentage error 4.37%of a reference gold standard.Similarly studies derive respiratory rate from single-lead ECG within mean absolute percentage error 17%of a reference gold standard. 展开更多
关键词 respiration inductive plethysmography respiratory rate ELECTROCARDIOGRAM 3D acceleration activity
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