Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes

The purpose of this study was to compare the effects of different load intensities with rest intervals between sets on heart rate, rating of perceived exertion (RPE), power output, and blood lactate concentration during a squat strength endurance training protocol. A total of 4 sets of strength...

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Main Authors: Yuemei Cui, Junjie Mu, Qian Wang, Rui Xi, Yizhou Wang, Dongxue Liu, Xiaoping Chen, Zhexiao Zhou
Format: Article
Language:English
Published: MRE Press 2023-11-01
Series:Journal of Men's Health
Subjects:
Online Access:https://oss.jomh.org/files/article/20231130-144/pdf/JOMH2023033101.pdf
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author Yuemei Cui
Junjie Mu
Qian Wang
Rui Xi
Yizhou Wang
Dongxue Liu
Xiaoping Chen
Zhexiao Zhou
author_facet Yuemei Cui
Junjie Mu
Qian Wang
Rui Xi
Yizhou Wang
Dongxue Liu
Xiaoping Chen
Zhexiao Zhou
author_sort Yuemei Cui
collection DOAJ
description The purpose of this study was to compare the effects of different load intensities with rest intervals between sets on heart rate, rating of perceived exertion (RPE), power output, and blood lactate concentration during a squat strength endurance training protocol. A total of 4 sets of strength endurance tests were performed on 15 national Level 2 or above athletes with different load intensities (30% of 1 repetition maximum (1RM), 50% 1RM) and different rest intervals between sets (1 min, 2 min), 20 reps per set. Mean power (P-mean), mean heart-rate (HRmean) and RPE variations during the exercise were collected by using a linear position transducer, heart rate monitor, and Borg 6–20 scale. Besides, finger blood was collected before and after the exercise, and analyzed by using a blood lactate analyzer. HRmean, P-mean and RPE values were significantly higher at 50% 1RM load intensity than at 30% 1RM (p < 0.01), HRmean was significantly higher at 1 min rest interval than at 2 min between sets, while P-mean was significantly higher at 2 min rest interval than at 1 min between sets (p < 0.05); at 30% 1RM loading intensity, blood lactate concentrations were significantly higher at the completion of exercise for the 1 min rest interval between sets than for the 2 min (p < 0.01). However, at 50% 1RM loading intensity, blood lactate increased similarly at the completion of training in multiple sets, independent of the rest interval between sets. From a practical point of view, the results suggest that a 1 min rest interval between sets may be sufficient in a strength endurance training protocol when the load intensity is 30% 1RM. However, when the load intensity is 50% 1RM, we suggest that a 2 min rest interval between sets is required for optimal recovery and maintenance of power output.
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spelling doaj.art-7b25226d271a4e6cbbb04fc9abac077c2024-01-02T03:06:24ZengMRE PressJournal of Men's Health1875-68671875-68592023-11-011911516010.22514/jomh.2023.115S1875-6867(23)00084-2Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletesYuemei Cui0Junjie Mu1Qian Wang2Rui Xi3Yizhou Wang4Dongxue Liu5Xiaoping Chen6Zhexiao Zhou7Faculty of Sports Science, Ningbo University, 315211 Ningbo, Zhejiang, ChinaFaculty of Sports Science, Ningbo University, 315211 Ningbo, Zhejiang, ChinaFaculty of Sports Science, Ningbo University, 315211 Ningbo, Zhejiang, ChinaFaculty of Sports Science, Ningbo University, 315211 Ningbo, Zhejiang, ChinaFaculty of Sports Science, Ningbo University, 315211 Ningbo, Zhejiang, ChinaFaculty of Sports Science, Ningbo University, 315211 Ningbo, Zhejiang, ChinaCentre for Sports Research, China Institute of Sport Science, 100061 Beijing, ChinaFaculty of Sports Science, Ningbo University, 315211 Ningbo, Zhejiang, ChinaThe purpose of this study was to compare the effects of different load intensities with rest intervals between sets on heart rate, rating of perceived exertion (RPE), power output, and blood lactate concentration during a squat strength endurance training protocol. A total of 4 sets of strength endurance tests were performed on 15 national Level 2 or above athletes with different load intensities (30% of 1 repetition maximum (1RM), 50% 1RM) and different rest intervals between sets (1 min, 2 min), 20 reps per set. Mean power (P-mean), mean heart-rate (HRmean) and RPE variations during the exercise were collected by using a linear position transducer, heart rate monitor, and Borg 6–20 scale. Besides, finger blood was collected before and after the exercise, and analyzed by using a blood lactate analyzer. HRmean, P-mean and RPE values were significantly higher at 50% 1RM load intensity than at 30% 1RM (p < 0.01), HRmean was significantly higher at 1 min rest interval than at 2 min between sets, while P-mean was significantly higher at 2 min rest interval than at 1 min between sets (p < 0.05); at 30% 1RM loading intensity, blood lactate concentrations were significantly higher at the completion of exercise for the 1 min rest interval between sets than for the 2 min (p < 0.01). However, at 50% 1RM loading intensity, blood lactate increased similarly at the completion of training in multiple sets, independent of the rest interval between sets. From a practical point of view, the results suggest that a 1 min rest interval between sets may be sufficient in a strength endurance training protocol when the load intensity is 30% 1RM. However, when the load intensity is 50% 1RM, we suggest that a 2 min rest interval between sets is required for optimal recovery and maintenance of power output.https://oss.jomh.org/files/article/20231130-144/pdf/JOMH2023033101.pdfmaleathletestrength endurancerest interval between setsload intensityblood lactate
spellingShingle Yuemei Cui
Junjie Mu
Qian Wang
Rui Xi
Yizhou Wang
Dongxue Liu
Xiaoping Chen
Zhexiao Zhou
Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes
Journal of Men's Health
male
athlete
strength endurance
rest interval between sets
load intensity
blood lactate
title Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes
title_full Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes
title_fullStr Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes
title_full_unstemmed Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes
title_short Acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes
title_sort acute effects of different load intensities and rest intervals on muscle strength endurance in male college athletes
topic male
athlete
strength endurance
rest interval between sets
load intensity
blood lactate
url https://oss.jomh.org/files/article/20231130-144/pdf/JOMH2023033101.pdf
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