Effects of Split Exercise Sessions on Excess Postexercise Oxygen Consumption and Resting Metabolic Rate

1998 ◽  
Vol 23 (5) ◽  
pp. 433-443 ◽  
Author(s):  
Khalid S. Almuzaini ◽  
Jeffrey A. Potteiger ◽  
Samuel B. Green

This study involved examining how splitting a 30-min exercise bout on a cycle ergometer into two equal sessions affects excess postexercise oxygen consumption (EPOC) and resting metabolic rate (RMR). In this study, 10 male volunteers (age = 23 ± 3.8) participated in two exercise trials, which were randomly assigned in a counterbalanced design and separated by 40 hr. One trial was 30 min of exercise at 70% [Formula: see text](CONT), followed by a 40-min measurement of EPOC. The second trial was divided into two 15-min sessions (SPLIT), separated by 6 hr. A 20 min measurement of EPOC followed each SPLIT session. Results indicated that the combined magnitude of EPOCs from SPLIT (7,410 ± 1,851 ml) was significantly greater than that from CONT (5,278 ± 1,305 ml). Data indicate that dividing a 30-min exercise session into two parts for these individuals significantly increases magnitude of EPOC but does not affect RMR. Key words: EPOC, RMR,[Formula: see text], exercise duration


1993 ◽  
Vol 21 (7) ◽  
pp. 1012-1019 ◽  
Author(s):  
GEORG KREYMANN ◽  
SEBASTIAN GROSSER ◽  
PETER BUGGISCH ◽  
CLAUS GOTTSCHALL ◽  
STEPHAN MATTHAEI ◽  
...  


2004 ◽  
Vol 82 (12) ◽  
pp. 1075-1083 ◽  
Author(s):  
Marc Riachi ◽  
Jean Himms-Hagen ◽  
Mary-Ellen Harper

Indirect calorimetry is commonly used in research and clinical settings to assess characteristics of energy expenditure. Respiration chambers in indirect calorimetry allow measurements over long periods of time (e.g., hours to days) and thus the collection of large sets of data. Current methods of data analysis usually involve the extraction of only a selected small proportion of data, most commonly the data that reflects resting metabolic rate. Here, we describe a simple quantitative approach for the analysis of large data sets that is capable of detecting small differences in energy metabolism. We refer to it as the percent relative cumulative frequency (PRCF) approach and have applied it to the study of uncoupling protein-1 (UCP1) deficient and control mice. The approach involves sorting data in ascending order, calculating their cumulative frequency, and expressing the frequencies in the form of percentile curves. Results demonstrate the sensitivity of the PRCF approach for analyses of oxygen consumption ([Formula: see text]02) as well as respiratory exchange ratio data. Statistical comparisons of PRCF curves are based on the 50th percentile values and curve slopes (H values). The application of the PRCF approach revealed that energy expenditure in UCP1-deficient mice housed and studied at room temperature (24 °C) is on average 10% lower (p < 0.0001) than in littermate controls. The gradual acclimation of mice to 12 °C caused a near-doubling of [Formula: see text] in both UCP1-deficient and control mice. At this lower environmental temperature, there were no differences in [Formula: see text] between groups. The latter is likely due to augmented shivering thermogenesis in UCP1-deficient mice compared with controls. With the increased availability of murine models of metabolic disease, indirect calorimetry is increasingly used, and the PRCF approach provides a novel and powerful means for data analysis.Key words: thermogenesis, oxygen consumption, metabolic rate, uncoupling protein, UCP.



2003 ◽  
Vol 103 (5) ◽  
pp. 588-593 ◽  
Author(s):  
David C Nieman ◽  
Gregory A Trone ◽  
Melanie D Austin


2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Paulo Farinatti ◽  
Antonio Gil Castinheiras Neto ◽  
Nádia Lima da Silva

Objectives. Resistance training may influence the resting metabolic rate (RMR), which is desirable in weight management programs. However, its impact on excess postexercise oxygen consumption (EPOC) is yet to be defined. The study evaluated the contribution of resistance training variables to EPOC. Design. Studies published until November 2011 were systematically reviewed. Methods. MEDLINE, LILACS, SCIELO, Science Citation Index, Scopus, SPORTDiscus, and CINAHL databases were consulted. The methodological quality of studies was assessed by the PEDro 10-point scale. A total of 155 participants (54% men) aged between 20±2 and 34±14 years were observed by 16 studies (quality scores ranged from 5 to 7), which were organized according to treatment similarity (number of sets, intensity, rest interval, speed of movement, and exercise order). Results. Training volume seemed to influence both EPOC magnitude and duration, whereas workload influenced mostly the magnitude. Short rest intervals (<60 s) increased the EPOC magnitude, but not the overall energy expenditure. Conclusion. Resistance training with high intensity and volume, performed with short rest intervals (as in circuit training), probably have greater impact on EPOC. Methodological procedures, particularly time of post-exercise observation and RMR assessment, should be standardized to an appropriate quantification of the actual influence of resistance training on EPOC.





1978 ◽  
Vol 40 (2) ◽  
pp. 293-298 ◽  
Author(s):  
Kathryn Rosenberg ◽  
J. V. G. A. Durnin

1. There was a significant increase in oxygen consumption in ten women after small intakes of alcohol.2. No significant difference was found between the average increase in metabolic rate over 3 h after an isoenergetic meal of food or of food plus alcohol. However, during the last half of the 3 h postprandial period, the increased O2 consumption was significantly greater after the meal including alcohol.3. Possible explanations for the contradictory results in the literature are discussed.



2006 ◽  
Vol 31 (3) ◽  
pp. 196-201 ◽  
Author(s):  
Scott Lyons ◽  
Mark Richardson ◽  
Phillip Bishop ◽  
Joe Smith ◽  
Hank Heath ◽  
...  

The purpose of this study was to investigate excess post-exercise oxygen consumption (EPOC) following a continuous 30 min bout of upper-body exercise (UBE) compared with 3 consecutive 10 min bouts of UBE. Ten male subjects (age (mean ± standard deviation), 25.7 ± 5.83 years; arm VO2 peak, 2.2 ± 0.25 L·min-1), on separate days (48 h between trials) and in counterbalanced order, performed a continuous 30 min bout of arm exercise at 60% of arm VO2 peak and 3 separate 10 min bouts of arm exercise at 60% of arm VO2 peak. Subjects reported to the laboratory rested and after a 12 h fast. Each test was preceded by a 30 min baseline test to determine resting metabolic rate. Post-exercise VO2 was continuously monitored until baseline was re-established. Results showed that the combined magnitude of the EPOCs from the intermittent exercise sessions was significantly (p > .05) greater (4.47 ± 1.58 L O2) than that elicited from the continuous exercise session (1.54 ± 1.25 L O2). These data indicate that separating a continuous 30 min arm exercise into 3 equal 10 min arm exercises will elicit a small but significantly higher EPOC, and thus result in greater post-exercise energy expenditure. This could be beneficial for those unable to perform lower-body exercise (LBE), or for those with limited exercise capacities.Key words: upper-body exercise, EPOC, magnitude, recovery.



2006 ◽  
Vol 14 (2) ◽  
pp. 89-96 ◽  
Author(s):  
David C. Nieman ◽  
Melanie D. Austin ◽  
Laura Benezra ◽  
Steven Pearce ◽  
Tim McInnis ◽  
...  


2004 ◽  
Vol 29 (6) ◽  
pp. 743-757 ◽  
Author(s):  
William P.S. McKay ◽  
Philip D. Chilibeck ◽  
Karen E. Chad ◽  
Brian L.F. Daku

A number of mechanisms have been proposed for the elevation in oxygen consumption following exercise. Biochemical processes that return muscle to its preexercise state do not account for all the oxygen consumed after exercise. It is possible that mechanical activity in resting muscle, which produces low frequency vibrations (i.e., muscle sounds: mechano-myographic [MMG] activity), could contribute to the excess postexercise oxygen consumption. Therefore the purpose of this study was to determine whether the resting MMG amplitude changes after exercise, and whether the change is related to the elevation in oxygen consumption [Formula: see text] Ten young male subjects (22.9 yrs) performed 30 minutes of exercise on a cycle ergometer at an intensity corresponding to 70%peak [Formula: see text] Oxygen consumption was measured by indirect calorimetry, and MMG by an accelerometer placed over the mid-quadriceps before exercise and for 5.5 hours after exercise. MMG activity, expressed as mean absolute acceleration, was significantly elevated for the 5.5 hours of measurement after exercise (p <  0.05). MMG and [Formula: see text] decayed exponentially after exercise with time constants of 7.2 minutes and 7.4 minutes, respectively. We conclude that muscle is mechanically active following exercise and that this may contribute to an elevated [Formula: see text] Key words: excess postexercise oxygen consumption, muscle sounds, acoustic myography





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