Document Detail

Preferred exertion across three common modes of exercise training.
MedLine Citation:
PMID:  11726259     Owner:  NLM     Status:  MEDLINE    
The use of self-selected intensities of exercise may increase adherence to exercise programs by allowing the participant more freedom to choose activities that are enjoyable. However, self-selected intensities may vary across exercise modes, and participants may not choose an intensity that is adequate to produce health benefits. The purpose of this study was to determine influence of exercise mode on self-selected exercise intensities. Eighteen subjects (12 men and 6 women) between the ages of 18 and 25 participated in this study. Preferred intensity tests were performed for 3 modes of exercise (treadmill, cycle ergometer, and stairstepper). .V(O)(2) values were obtained continuously and 1-minute averages were recorded at minutes 5, 10, 15, and 20 for each submaximal test. Comparisons were made using a repeated-measures analysis of variance (mode, time, mode x time). Scheffe's F test was used to test simple effects. There was a significant increase in the relative .V(O)(2) for all 3 modes of exercise across the 20-minute trials (p = 0.0001). Relative .V(O)(2) (%.V(O)(2)peak) increased from 52.20 to 64.71% for cycle exercise, 43.27 to 63.25% for the treadmill, and 47.16 to 61.17% for stairstepping. The average relative .V(O)(2) for the cycle ergometer (60.40 +/- 15.55%) was significantly higher (p = 0.02) than both the treadmill (53.65 +/- 18.36%) and stairstepper (54.66 +/- 11.98%). Relative heart rate (HR) (%HRR) for the stairstepper (80.21 +/- 9.67%) and the cycle ergometer (80.03 +/- 10.59%) were significantly higher than the treadmill (74.77 +/- 13.13%) (p = 0.0003). There were no significant differences in rating of perceived exertion (RPE) among the 3 modes of exercise. Similar RPE values were reported for the stairstepper (12.79 +/- 2.97), cycle ergometer (12.57 +/- 2.90), and the treadmill (12.50 +/- 2.87). The results indicate that subjects allowed to choose exercise intensity by self-selection chose work rates that were within the moderate range of American College of Sports Medicine guidelines of 50-85% .V(O)(2)max for treadmill, cycle ergometer, and stairstepping exercise.
S C Glass; A M Chvala
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  15     ISSN:  1064-8011     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2001 Nov 
Date Detail:
Created Date:  2001-11-29     Completed Date:  2002-02-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  474-9     Citation Subset:  IM    
Human Performance Lab, Wayne State College, Wayne, NE 68787, USA.
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MeSH Terms
Exercise / physiology*,  psychology*
Exercise Test / instrumentation
Heart Rate
Oxygen Consumption / physiology
Physical Education and Training / methods*
Physical Exertion / physiology
Physical Fitness / physiology
Respiratory Physiological Phenomena

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