| The influence of interval versus continuous exercise on thermoregulation, torso hemodynamics, and finger dexterity in the cold. | |
| | |
MedLine Citation:
|
PMID: 20229022 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The purpose of this study was to evaluate how interval (INT) and continuous (CONT) exercise alter body temperatures and manual dexterity in the cold (5 degrees C). Fourteen young men underwent two trials consisting of a 90-min period of acute cold exposure (ACE), 30 min of exercise (INT or CONT), and a 60-min recovery period (REC). Participants donned approximately 1 clo but the hands remained bare for the entire protocol so that a steep decline in dexterity performance occurred prior to the initiation of exercise. INT and CONT were isoenergetic, reflecting 50 +/- 1% of each individual's VO(2) peak. Rectal (Tre) and skin temperatures were monitored continuously and dexterity testing was conducted at ten time points throughout each 3-h trial. In addition, oxygen consumption (VO(2)) and torso hemodynamics were assessed via indirect calorimetry and impedance cardiography (ICG), respectively. As expected, finger temperature and dexterity declined during ACE, relative to baseline. Both modes of exercise increased finger temperature and dexterity, relative to ACE. However, CONT was more effective than INT at increasing finger temperature on the dominant hand, which was associated with better dexterity scores during REC. Tre was not different between trials but a significant increase in stroke volume was found following CONT. Perhaps elevated stroke volume during post-exercise REC plays a role in finger rewarming and dexterity performance. Further mechanistic studies are needed to confirm the role of cardiovascular function in the enhancement of manual performance in the cold. |
| | |
Authors:
|
Matthew D Muller; Edward J Ryan; David M Bellar; Chul-Ho Kim; Robert P Blankfield; Sarah M Muller; Ellen L Glickman |
Publication Detail:
|
Type: Journal Article; Randomized Controlled Trial Date: 2010-03-13 |
Journal Detail:
|
Title: European journal of applied physiology Volume: 109 ISSN: 1439-6327 ISO Abbreviation: Eur. J. Appl. Physiol. Publication Date: 2010 Jul |
Date Detail:
|
Created Date: 2010-06-25 Completed Date: 2010-10-07 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100954790 Medline TA: Eur J Appl Physiol Country: Germany |
Other Details:
|
Languages: eng Pagination: 857-67 Citation Subset: IM |
Affiliation:
|
Exercise and Environmental Physiology Laboratory, Kent State University, Gym Annex 167, Kent, OH 44242, USA. mmuller1@kent.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Body Temperature / physiology Body Temperature Regulation / physiology* Cold Temperature* Exercise / physiology* Fingers / physiology* Heart Rate / physiology Hemodynamics / physiology* Humans Male Oxygen Consumption / physiology Stroke Volume / physiology Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Exercise intensity of head-out water-based activities (water fitness).
Next Document: Ingesting a 6% carbohydrate-electrolyte solution improves endurance capacity, but not sprint perform...