Analysis of the Effects of Different Forms of Induced PAP on the Lower Extremity Isometric Muscle Strength of Sprinters
This study aims to investigate the effects of different forms of induced Post-Activation Potentiation(PAP)on the isometric strength of the lower limbs in sprinters.Through experimental methods,12 male sprinters were selected as experimental subjects and subjected to 45%1RM and 120 mmHg pressurized blood flow restriction combined with 45%1RM and 80%1RM weight-bearing half squat exercises,respectively.The results indicated that:Under the intervention of 120 mmHg pressurized blood flow restriction combined with 45%1RM,the isometric strength(anterior group)with of the subjects was better than that under 45%1RM load,with the largest difference in performance at the 7th minute,P＜0.05,indicating a significant difference;Compared with 45%1RM,under 80%1RM load,the subjects showed a significant improvement in their performance in the first minute,P＜0.01,with a very significant difference.The greatest difference in performance was observed in the seventh minute,P＜0.01,with a very significant difference;Compared with the intervention of 45%1RM and 80%1RM load,there was no significant difference in the results of isometric muscle strength(anterior group)at each recovery time point after the experiment,when using 120 mmHg pressurized blood flow restriction combined with 45%1RM;Compared with 45%1RM,under the intervention of 120 mmHg pressurized blood flow restriction combined with 45%1RM load,the lower limb isometric muscle strength(posterior group)of the subjects was better than that of the 45%1RM isometric muscle strength(posterior group)from the 7th to the 16th minute,but the overall P value was greater than 0.05,and there was no significant difference;Under the intervention of 80%1RM load,the difference between the 10th to 13th minute scores of the subjects and the 45%1RM scores was the largest,with a significant difference,P＜0.05;Compared with 120 mmHg pressurized blood flow restriction combined with 45%1RM,under 80%1RM load,the subjects had better results in lower limb isometric muscle strength(posterior group muscle).However,from the perspective of various recovery time points after the experiment,the results under the two loads were P＞0.05,with no significant difference.This study provides a theoretical basis for the training of sprinters,and coaches can choose appropriate load intervention methods based on the specific situation and training objectives of the athletes to improve their athletic performance.
万方数据
维普
