Journal article
Physiologic responses to a thermogenic nutritional supplement at rest, during low-intensity exercise, and during recovery from exercise in college-aged women
Applied physiology, nutrition, and metabolism, Vol.38(9), pp.988-995
09/01/2013
DOI: 10.1139/apnm-2013-0029
PMID: 23905665
Abstract
This study examined acute physiologic responses to a thermogenic nutritional supplement at rest, during exercise, and during recovery from exercise in women. Twelve women (mean +/- SD age, 22.9 +/- 3.1 years) were recruited for this randomized, double-blinded, placebo-controlled, crossover study. Each testing session consisted of 4 phases: 30 min of presupplementation resting, followed by the ingestion of the placebo or thermogenic nutritional supplement; 50 min of postsupplementation resting; 60 min of walking (at 3.2-4.8 km.h(-1)); and 50 min of postexercise resting. Energy expenditure (EE), oxygen consumption, respiratory exchange ratio (RER), oxygen (O-2) pulse, and heart rate (HR) values were recorded during all 4 phases. Systolic (SBP) and diastolic (DBP) blood pressure were recorded during the rest, postsupplementation, and postexercise recovery phases; ratings of perceived exertion (RPE) were recorded only during exercise. There were no significant differences for EE, oxygen consumption, O-2 pulse, HR, SBP, or DBP between the supplement and placebo during the presupplementation resting or postsupplementation phases. The RER, however, was higher with the supplement at 30 min postsupplementation. During exercise, EE and O-2 pulse were 3%-6% greater with the supplement than placebo; there were no significant differences in RPE. Postexercise, EE, oxygen consumption, and DBP were 3%-7% greater with the supplement than placebo. These findings suggest that a thermogenic nutritional supplement, when combined with exercise, increases metabolic rate but has no effect on the perception of effort and results in only minimal changes in cardiovascular function.
Details
- Title: Subtitle
- Physiologic responses to a thermogenic nutritional supplement at rest, during low-intensity exercise, and during recovery from exercise in college-aged women
- Creators
- Haley C. Bergstrom - University of Nebraska–LincolnTerry J. Housh - University of Nebraska–LincolnDaniel A. Traylor - University of Nebraska–LincolnRobert W. Lewis - University of Nebraska–LincolnNathaniel D. M. Jenkins - University of Nebraska–LincolnKristen C. Cochrane - University of Nebraska–LincolnRichard J. Schmidt - University of Nebraska–LincolnGlen O. Johnson - University of Nebraska–LincolnDona J. Housh - University of Nebraska Medical Center
- Resource Type
- Journal article
- Publication Details
- Applied physiology, nutrition, and metabolism, Vol.38(9), pp.988-995
- DOI
- 10.1139/apnm-2013-0029
- PMID
- 23905665
- NLM abbreviation
- Appl Physiol Nutr Metab
- ISSN
- 1715-5312
- eISSN
- 1715-5320
- Publisher
- CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
- Number of pages
- 8
- Grant note
- General Nutrition Corporation
- Language
- English
- Date published
- 09/01/2013
- Academic Unit
- Center for Social Science Innovation; Injury Prevention Research Center; Health, Sport, and Human Physiology
- Record Identifier
- 9984259391102771
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