Effect of concurrent training sequences on body composition and hormone response: a Meta-analysis

doi:10.12307/2022.240

Abstract

Abstract: OBJECTIVE: Concurrent training can concurrently improve the body’s cardiorespiratory function and muscle strength. This meta-analysis systematically reviews the comparative results of different sequences of endurance and strength trainings in concurrent training to improve body composition and induce hormone responses, providing scientific guidance and certain reference for current training practice.
METHODS: We searched Web of Science, PubMed, The Cochrane Library, Science Direct, EBSCOhost, CNKI, and WanFang databases for literatures about the effects of different sequences in concurrent training on body composition and hormones. The retrieval time was from the inception of these databases to June 2020. The quality of the included studies was evaluated by Cochrane Handbook risk assessment tool and meta-analysis was performed by RevMan5.3 software.
RESULTS: A total of 19 randomized, double-blind, controlled trials involving 510 subjects were included. There were 259 subjects in endurance-strength (ES) sequence, and 271 subjects in strength-endurance (SE) sequence. There was no significant difference in body mass, lean body mass, and body mass index percentage between ES sequence group and SE sequence group (P > 0.05); however, there was a significant difference in body fat percentage between the two groups (weighted mean difference (WMD)=0.96, 95% confidence interval (CI): 0.29-1.63, P < 0.01), indicating the SE sequence is more advantageous. There was also a significant difference in the percentage of waist circumference (WMD=-2.43, 95% CI: -3.88 to 0.97, P < 0.01), indicating that indicating the ES sequence is more advantageous. The results of body fat percentage subgroup analysis showed that people without training background, men and the elderly were more likely to obtain the advantage of SE sequence, and this advantage appeared 5-8 weeks after the intervention. There was no significant difference in the percentage of serum cortisol between ES and SE before and immediately after exercise (P > 0.05), while there was a significant difference in serum testosterone level (WMD=27.37, 95% CI: 15.24-39.50, P < 0.001), indicating that the ES sequence rises more obviously.
CONCLUSION: The existing randomized controlled trials have confirmed that the reduction of body fat percentage by SE sequence in concurrent training is more significant than that by ES sequence, which is especially related to no training background, men, and the elderly, and can be obtained after 5-8 weeks of short-term training. In concurrent training, ES sequence has a better effect on waist circumference and testosterone level immediately after exercise than SE sequence, so ES sequence has obvious advantages in reducing visceral fat and inducing anabolism after exercise.

Key words: different sequences, concurrent training, endurance exercise, resistance training, strength training, body composition, hormone, Meta-analysis

CLC Number:

Wu Min, Zhang Yeting, Wang Lu, Wang Junwei, Jin Yu, Shan Jixin, Bai Bingyi, Yuan Qiongjia. Effect of concurrent training sequences on body composition and hormone response: a Meta-analysis[J]. Chinese Journal of Tissue Engineering Research, 2022, 26(8): 1305-1312.

Figures/Tables 15

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