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Effects of isokinetic and isotonic training programmes on heart rate and blood pressure in high school students

机译：等速运动和等渗运动训练计划对高中生心率和血压的影响

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Study aim: To compare the effects of 6-week isokinetic and isotonic training programmes on heart rate and blood pressure in high school students.Material and methods: Twenty-nine healthy, untrained male student subjects aged 15 - 18 years participated in the study. They were assigned into 3 groups: control (C; n = 11), and subjected to isokinetic (IK; n = 8) or isotonic (IT; n = 10) training lasting 6 weeks, 3 days a week. Isokinetic exercises consisted of 3 sets of 20-s extensions/flexions (both knees) at 180°/s, spaced by 30-s intermissions, the isotonic ones - of 4 sets of extensions (both knees) at 50% of the predetermined one repetition maximum, spaced by 30-s intermissions. Heart rates (HR) and blood pressure were determined before and after the training period, both pre- and post-exercise.Results: Mean resting HR and exercise-induced HR-increase significantly decreased post-training in IT group (by 19 and 24%, respectively; p<0.001). The exercise-induced HR-increase significantly increased post-training in IK group (by 17%; p<0.001). Significant (p<0.01) training-induced decreases in the systolic pressure (SBP) were found in both training groups (IT and IK, by 7 and 6%, respectively).Conclusions: The results may be of practical importance for athletes and health professionals who administer openchain resistance exercises.
机译：研究目的：比较6周的等速运动和等渗训练计划对高中学生心率和血压的影响。材料和方法：29名15-18岁的健康，未经训练的男性学生受试者参加了该研究。将他们分为3组：对照组（C; n = 11），并接受等速训练（IK; n = 8）或等渗训练（IT; n = 10），每周训练3天，共6周。等速运动包括3组以180°/ s的速度进行20-s伸展/屈曲（双膝），间隔30-s，等渗运动-等距运动-包括4组伸展（两次屈膝），按预定次数的50％最大重复次数，间隔30秒。在运动前和运动后分别确定运动前后的心率（HR）和血压。结果：IT组的运动后平均静息HR和运动诱发的HR升高显着降低（分别为19和24）分别为％; p ＜0.001）。运动诱发的HR升高在IK组中的训练后显着增加（增加17％; p <0.001）。在两个训练组（IT和IK分别下降了7％和6％）中，训练引起的收缩压（SBP）均显着降低（p <0.01）。结论：结果可能对运动员和健康有实际意义管理开链抵抗运动的专业人员。

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