2019 Volume 40 Pages 146-154
ABSTRACT
【Background】The benefit of body weight resistance exercise with slow movement （BWRE-slow） for muscle function is well-documented, but not for energy metabolism. We aimed to examine physiological responses （e.g., energy expenditure （EE）， respiratory exchange ratio （RER）， and blood lactate （La）） during and after BWRE-slow compared with EE-matched treadmill walking （TW）．
【Methods】Eight healthy young men （23.4±1.8years old, 171.2±6.2cm, 63.0±4.8kg） performed Squat, Push-up, Lunge, Heel-raise, Hip-lift, and Crunch exercises with BWRE-slow modality: Both the concentric and eccentric phase were set to 3sec. A total of 3 sets （10repetitions） with 30 sec rest between sets were performed for each exercise （26.5min）．On another day, subjects walked on a treadmill for 26.5min during which EE during exercise was matched to that of BWRE-slow with the researcher controlling the treadmill speed manually.
【Results】The time course changes of EE and RER were measured. The EE during exercise for BWRE-slow （92.6±16.0 kcal for 26.5min） was not significantly different from the EE during exercise for TW （95.5±14.1kcal, P=0.36）．BWRE-slow elicited greater recovery EE （40.55±3.88kcal for 30-min） than TW （37.61±3.19kcal, P=0.029）．RER was significantly higher in BWRE-slow during and 0-5min after exercise, but became significantly lower during 25-30min after exercise, suggesting greater lipid oxidation was induced about 30-min after exercise in BWRE-slow compared with TW.【Conclusion】We also indicated BWRE-slow has 3.1METs in average which is categorized into moderate-intensity physical activity.
