The effects of low-volume combined training on health-related physical fitness outcomes in active young adults: A controlled clinical trial

Abstract

The effects of combined training (CT) on improving general health are well known, however, few studies have investigated the effects of low-volume CT. So, the aim of this study is to investigate the effects of 6 weeks of low-volume CT on body composition, handgrip strength (HGS), cardiorespiratory fitness (CRF) and affective response (AR) to exercise. Eighteen healthy, active young adult man (mean ​± ​SD, [20.06 ± 1.66] years; [22.23 ± 2.76] ​kg/m²) performed either a low-volume CT (EG, n ​= ​9), or maintained a normal life (CG, n ​= ​9). The CT was composed of three resistance exercises followed by a high intensity-interval training (HIIT) on cycle ergometer performed twice a week. The measures of the body composition, HGS, maximal oxygen consumption (V˙O_2max) and AR to exercise were taken at baseline and after training for analysis. Furthermore, an ANOVA test of repeated measures and t-test paired samples were used with a p ​≤ ​0.05. The results showed that EG improved HGS (pre: [45.67 ± 11.84] ​kg vs. post: [52.44 ± 11.90] ​kg, p ​< ​0.01) and V˙O_2max (pre: [41.36 ± 5.16] ​ml⋅kg^-1⋅min^-1 vs. post: [44.07 ± 5.98] ​ml⋅kg^-1⋅min^-1, p ​< ​0.01). Although, for all measures the body composition had not significant differences between weeks (p ​> ​0.05), nevertheless the feeling scale was positive in all weeks and without significant differences between them (p ​> ​0.05). Lastly, for active young adults, the low-volume CT improved HGS, CRF and had a positive outcome in AR, with less volume and time spent than traditional exercise recommendations.

Keywords

Exercise / Concurrent training / Handgrip strength / Cardiorespiratory fitness / Affective response / Untrained

Ethical approval statement

The study was performed following the Declaration of Helsinki and was approved by the ethics committee of Polytechnic institute of Beja (CEIPBeja). The participants were volunteers, without a monetary incentive and were informed about the use of their information. Informed consent from each participant was obtained.

Authors' contributions

RM: Writing - original draft, Formal analysis, conceived of the study, managed the database, performed statistical analyses, interpreted results, drafted the manuscript, NL: Writing - original draft, conceived of the study, interpreted results, drafted the manuscript All authors provided critical reviews and manuscript edits before approval of the final version.

Informed consent statement

Informed consent was obtained from all subjects involved in the study.

Funding/support statement

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Conflict of interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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