Fat-free Mass and Excess Post-exercise Oxygen Consumption in the 40 Minutes after Short-duration Exhaustive Exercise in Young Male Japanese Athletes

Abstract

The relationship between fat-free mass (FFM) and excess post-exercise oxygen consumption (EPOC) has not been well researched because of the relatively small number of subjects studied. This study investigated the effects of FFM on EPOC and EPOC/maximum oxygen consumption. 250 Japanese male athletes between 16 and 21 years old from Nagasaki prefecture had their EPOC measured up to 40 minutes after short-duration exhaustive exercise. The value was named as EPOC 40 min. The proportions of EPOC up to 1, 3, 6, 10, and 25 minutes to EPOC 40 min were calculated and named as P1, P3, P6, P10, and P25, respectively. Body size and composition, VO 2 max and resting metabolic rate (RMR) were also measured. Mean EPOC 40 min was 9.04 L or 158 ml/kg FFM. EPOC 40 min was related to FFM (rϭ0.55, pϽ0.001) and VO 2 max (rϭ0.37, pϽ0.001). The ratio of EPOC 40 min to VO 2 max was related to FFM (rϭ0.28, pϽ0.001). P1, P3, P6, P10, and P25 were negatively related to EPOC 40 min /FFM, EPOC 40 min /VO 2 max, and FFM. Athletes who had larger FFM had larger EPOC40 40 min and EPOC40 40 min /VO 2 max, and smaller P1, P3, P10, and P25.

The Effects of Physical Fitness and Body Composition on Oxygen Consumption and Heart Rate Recovery After High-Intensity Exercise

“…EPOC was positively related to body composition, fat composition ( % BF and TBF) as well as total muscular content and active muscle mass (FFM and LLFFM). However, even with a larger sample size, this association was less signifi cant in Tahara et al [ 29 ] . According to authors [ 29 ] , the association between FFM and EPOC is due to a larger volume of myoglobin, which plays an important role in the re-synthesis of ATP.…”

“…However, even with a larger sample size, this association was less signifi cant in Tahara et al [ 29 ] . According to authors [ 29 ] , the association between FFM and EPOC is due to a larger volume of myoglobin, which plays an important role in the re-synthesis of ATP. However, this statement is a hypothesis.…”

Sex-Related Differences in Oxygen Consumption Recovery After High-Intensity Rowing Exercise During Childhood and Adolescence

“…EPOC could be associated with AOD and its determinants, i.e. exercise intensity and duration (5,25), and individual body dimensions (35). Indeed, Tahara and colleagues (35) showed significant positive correlations between EPOC, body mass (BM) and LBM in 16-to 21-year-old male athletes.…”

“…exercise intensity and duration (5,25), and individual body dimensions (35). Indeed, Tahara and colleagues (35) showed significant positive correlations between EPOC, body mass (BM) and LBM in 16-to 21-year-old male athletes. This result has also been reported by Campos et al ( 9) in 28-year-old professional cyclists for whom EPOC was positively associated with total and lower limb lean mass.…”