Effect Of Different Intensity Slow Squat Training On Maximum Strength And Blood Pressure Of Lower Extremities

Research Objective:With the coming of fitness craze,Chinese fitness groups are growing.The appearance of pressure increase in exercise brings cardiovascular pressure to fitness groups,and the stimulation of high-intensity training is more serious.How to keep fit scientifically,enhance the safety of training,and improve the quality of training as far as possible on the premise of avoiding sports injuries have become urgent problems to be solved in the field of public fitness.Low-intensity slow resistance training(LST)with continuous tension refers to a training method that carries out 3-second centriocentric and centrifugal stage under low intensity load.Studies have proved that LST and traditional high-intensity resistance training(HN)have the same effect on the increase of maximum strength,because the movement speed is slow during training,the training process is safe and controllable,and the possibility of injury is reduced during exercise.Slow resistance training has been widely studied.The use of high intensity for maximum strength training is necessary,however,there are no current studies on the maximum strength of high intensity slow resistance training(HST)with sustained tension generation for young male fitness enthusiasts.Muscle contraction speed has an impact on immediate blood pressure after exercise.However,there is a lack of research on the influence of different load intensity on immediate blood pressure after exercise for young fitness enthusiasts at the same movement speed,and the influence of different muscle contraction speed on immediate blood pressure after exercise at the same load intensity.Resistance training can lower resting blood pressure,but studies on the effect of slow resistance training are not comprehensive.By comparing the effects of LST,HN and HST training interventions through experiments,this paper explores the most effective training methods for young fitness enthusiasts to improve the maximum strength of lower limbs,as well as the effects of muscle contraction speed and load intensity on immediate blood pressure after exercise,and the long-term effects of three training methods on resting blood pressure of subjects.Research methods:This paper mainly uses the literature method to determine the training intervention program,the experimental method to organize the training process,and the mathematical statistics method to analyze the data.The experiment recruited several students from Capital Institute of Physical Education and selected 30 subjects.Squat 1RM and resting blood pressure were measured,and 30 young male fitness enthusiasts were assigned to the LST experimental group(50%1RM,3 seconds to complete squat/lift,without pause;n=10)and HST experimental group(85%1RM,3 seconds to complete squat/lift,without pause;n=10)and HN control group(85%1RM,1 second complete squat/lift and 1second pause;n=10)groups.Subjects in all three groups were trained according to the specified method for 8 weeks,requiring three training sessions per week with three sets of training.The resting blood pressure was measured before each training session(denoted SP0 and DP0),and the immediate blood pressure was measured after each training session(denoted SP1 and DP1 in the first group,SP2 and DP2 in the second group,and SP3 and DP3 in the third group).Before the 5th week of the experiment,the subjects squat 1RM and resting blood pressure were measured in the medium to adjust the weight for subsequent training.After the8-week intervention,the lower extremity maximum strength and resting blood pressure of the subjects were tested,and the squat and blood pressure data of the three groups were statistically analyzed.Research results:1.After 8 weeks of training,the three resistance training modes can significantly improve squat 1RM of male young fitness enthusiasts(P=0.00).The effect of HST on squat 1RM was significantly higher than that of HN and LST,P values were 0.00 and 0.02.LST and HN had the same effect on squat 1RM of male young fitness enthusiasts,P=0.20.2.During the training process,the SP and DP values of the three groups immediately after exercise increased significantly compared with resting,P=0.00;There was no difference in SP value immediately after three training sessions in LST,HST and HN groups,all of which remained at a relatively high level,with P values of 0.22,0.42 and 0.38,respectively,while there were differences in DP values of each group,with P values of 0.03,0.04 and0.00,respectively.There was no difference in resting SP and DP data among the three groups,with P values of 0.69 and 0.09,respectively.The SP1,SP2 and SP3 values of HN group were significantly higher than those of LST and HST group,P=0.00;the SP1,SP2 and SP3 values of HST group were significantly higher than those of LST group,P=0.00;The value of DP1 in the HN group was higher than that in the LST and HST groups(P=0.00and0.01),and there was no difference between the HST group and the LST group(P=0.18).The value of DP2 in HN group was significantly higher than that in LST and HST groups(P=0.00 and0.00,respectively);the value of DP2 in HST group was significantly higher than that in LST group(P=0.00;DP3 in HN group was significantly higher than that in LST and HST groups(P=0.00),and DP2 in HST group was significantly higher than that in LST group(P=0.00).3.After 8 weeks of training intervention,the resting SP and DP values of the three groups all showed a decrease,P=0.00.The resting SP values of LST,HST and HN for young male fitness lovers were 6.5mm Hg,6mm Hg and 5.6mm Hg,and the resting DP values were 6mm Hg,6.2mm Hg and 4mm Hg.The significance of SP and DP among the three groups was P=0.93 and P=0.14.Research conclusion:1.After eight weeks of training,all three resistance training modes can significantly improve squat 1RM for young male fitness enthusiasts.HST squat1 RM improved the most,significantly better than LST and HN,LST and HN had the same effect on squat 1RM.2.All the three resistance training modes can significantly increase the blood pressure of young male fitness enthusiasts immediately after exercise.The SP value immediately after HN exercise was the highest,the SP value immediately after LST exercise was the lowest,the SP value immediately after HST exercise was between HN and LST,and the SP value of the three groups remained high during the exercise.DP changes the same as SP.3.After eight weeks of training,resting blood pressure decreased in all three groups.The three resistance training modes showed a similar decrease in resting blood pressure among male young bodybuilders.