Effects of Concurrent Strength and HIIT-Based Endurance Training on Physical Fitness in Trained Team Sports Players: A Systematic Review and Meta-Analysis

Jian Kang, Zhijing Ye, Xinxing Yin, Changjing Zhou and Bo Gong ()
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Jian Kang: School of Elite Sport, Shanghai University of Sport, Shanghai 200438, China
Zhijing Ye: School of Elite Sport, Shanghai University of Sport, Shanghai 200438, China
Xinxing Yin: School of Marxism Studies, Xi’an Jiaotong University, Xi’an 710049, China
Changjing Zhou: School of Elite Sport, Shanghai University of Sport, Shanghai 200438, China
Bo Gong: School of Elite Sport, Shanghai University of Sport, Shanghai 200438, China

IJERPH, 2022, vol. 19, issue 22, 1-17

Abstract: Background: Concurrent strength and HIIT-based endurance training (CT) has merit in time-saving in team sports. However, the effect of CT on physical fitness remained equivocal. This meta-analysis aimed to determine whether CT would produce an interference effect on the development of physical fitness when compared to strength training (ST) or HIIT-based endurance training (HET) alone in trained team sports players. Methods: A total of 2478 studies from three databases were screened. 52 full texts were reviewed. Seven studies were finally included and then subgroups were used for quantitative analysis. Results: Compared to ST alone, CT had a significant effect on the development of maximal lower-body strength in trained team sports players (MD 4.20 kg, 95% CI 0.71–7.68, p = 0.02, I 2 = 20%), but there was no significant difference between the groups on training adaptation in lower-body power (SMD 0.08, 95% CI −0.23–0.39, p = 0.62, I 2 = 26%). Furthermore, a sub-group analysis based on the internal organization order of CT revealed that there was no statistically significant subgroup effect between CT and ST alone in all parameters. Conclusions: Well-designed CT regimens did not interfere with the development of physical fitness of trained team sports players.

Keywords: concurrent training; strength training; endurance training; physical fitness; interference (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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