Excess Postexercise Oxygen Consumption After Aerobic Exercise Training

Abstract

Literature examining the effects of aerobic exercise training on excess postexercise oxygen consumption (EPOC) is sparse. In this study, 9 male participants (19-32 yr) trained (EX) for 12 wk, and 10 in a control group (CON) maintained normal activity. VO(2max), rectal temperature (T(re)), epinephrine, norepinephrine, free fatty acids (FFA), insulin, glucose, blood lactate (BLA), and EPOC were measured before (PRE) and after (POST) the intervention. EPOC at PRE was measured for 120 min after 30 min of treadmill running at 70% VO(2max). EX completed 2 EPOC trials at POST, i.e., at the same absolute (ABS) and relative (REL) intensity; 1 EPOC test for CON served as both the ABS and REL trial because no significant change in VO(2max) was noted. During the ABS trial, total EPOC decreased significantly (p < .01) from PRE (39.4 ± 3.6 kcal) to POST (31.7 ± 2.2 kcal). T(re), epinephrine, insulin, glucose, and BLA at end-exercise or during recovery were significantly lower and FFA significantly higher after training. Training did not significantly affect EPOC during the REL trial; however, epinephrine was significantly lower, and norepinephrine and FFA, significantly higher, at endexercise after training. Results indicate that EPOC varies as a function of relative rather than absolute metabolic stress and that training improves the efficiency of metabolic regulation during recovery from exercise. Mechanisms for the decreased magnitude of EPOC in the ABS trial include decreases in BLA, T(re), and perhaps epinephrine-mediated hepatic glucose production and insulin-mediated glucose uptake.

The Effects of a Personal Oxygen Supplement on Performance, Recovery, and Cognitive Function During and After Exhaustive Exercise

“…The difference in these findings might be attributable to the nature of the delivery mechanism found in these forms of supplements. Regardless of delivery mechanism, the results of this study did agree with previous studies, which indicate that oxygen delivery is not considered to be the limiting factor in maximal exercise performance (1,13,18,24,31). All variables observed in the recovery phase (first 2 minutes after exhaustion) showed no significant difference with use of the personal OS and the placebo.…”

“…Recent work suggests that oxygen delivery is not considered to be the limiting factor in maximal exercise performance, and recovery has not been significantly affected by the breathing of oxygenenriched air (1,13,18,24,31). Also, the use of supplemental oxygen before exercise has not resulted in any significantly different physiological effects documented in recovery, as compared with ambient air (21,22,34).…”

Effects of Walking with Blood Flow Restriction on Excess Post-exercise Oxygen Consumption

“…Second, for the purpose of limiting our analyses to a homogenous group of participants, we excluded all of those showing a VO 2max below the 50 th percentile for their age and sex group-matched normative values. It appears that the magnitude of EPOC is decreased in the trained state after exercise performed at the same absolute intensity [46]. Therefore, in persons with poorer levels of cardiorespiratory fitness, interval walking performed at a Froude number of 0.25 likely contributes to a greater magnitude of EPOC than that seen in the present study.…”

“…It should be pointed out that the methods of measuring baseline and EPOC duration have not been consistent among investigations. In some cases, baseline and recovery data have been collected with the participants in the seated position [46,47], whereas in others the participants rested supine [5,18]. The seated rest position was used in this study because we have found it to be comfortable and convenient for both participants and researchers.…”

Changes of Cardiopulmonary and Metabolic Functions during Jogging with and without Breast Supports: a randomized controlled trial

“…In fact, full recovery appears within 3-4 min post-exercise, which is a common characteristic. Metabolism remained slightly elevated across all conditions during recovery, indicating that despite the exercise cessation, biochemical processes remain active [30]. This was documented by the elevated rate of high glucose uptake in working muscles during recovery [31].…”