Work

The effects of different work: Rest durations on physiological, neuromuscular, and ratings of perceived exertion responses during taekwondo-specific high-intensity interval training

Year: 2025

Type: article

Abstract: To investigate the effect of different work: rest durations on physiological, neuromuscular, and perceived exertion responses during taekwondo-specific high-intensity interval training (HIIT). Thirteen moderate-trained taekwondo athletes (age: 21.7 ± 2.4 years; body mass: 69.1 ± 7.6kg; height: 174 ± 6 cm) completed a familiarization session and three HIIT trials. The trial consisted of three rounds of 2 min roundhouse kicks with 1 min of rest in between. In each round, the work: rest ratio was constant at 1:2, and the work: rest duration varied to be: short (2s:4s), medium (10s:20s), and long (20s:40s). Heart rate (HR) and oxygen uptake ( V ˙ O 2 ) were continuously measured. Blood lactate concentration ([La − ]), countermovement jump (CMJ), and rating of perceived exertion (RPE) were recorded before trials and after each round. Energy contribution was estimated. HR, V ˙ O 2, and CMJ were similar across protocols ( P > .05) but, [La − ] was higher during long than short work: rest duration protocol ( P < .05). Relative aerobic energy contribution and RPE in round 3 were higher during long than short work: rest duration protocol ( P < .05). Absolute and relative glycolytic energy contribution in rounds 1 and 2 were higher during long than short work: rest duration protocol ( P < .05). Relative phosphate energy contribution in rounds 1 and 3 was lower during long than short work: rest duration protocol ( P < .05). Different work: rest durations of taekwondo-specific HIIT influenced [La − ], energy system contributions, and RPE. The longer work: rest duration protocol (20s:40s) stressed more the glycolytic, aerobic energy systems and perceived exertion, and less the phosphagen energy system.

Source: Journal of Exercise Science & Fitness

DOI: 10.1016/j.jesf.2025.03.002

Authors: Hang Zheng, Guochao Zhang, Yuming Zhong, George P. Nassis, Zhili Chen, Yongming Li

Institutions: Shanghai University of Sport, China Institute of Sport Science

Language: English

Topic: Sports Performance and Training

Subfield: Orthopedics and Sports Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $1,150