Publication Date


Document Type


First Advisor

Ball, Thomas E.

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Physical Education


Exercise for men--Physiological aspects; Weight training--Physiological aspects


The purpose of this study was to compare acute responses between accommodating resistance (AR) and dynamic constant resistance (DCR) exercise. Fifteen experienced male weight lifters between 30 and 45 years of age were subjects. Each subject performed 4 sets of 6 repetitions maximum on the DCR apparatus. They then performed 4 sets of an average of 20 repetitions on the AR apparatus in order to equal the total work performed on the DCR apparatus. The mean heart rate value for DCR exercise was 97.4 +/- 8. 8 bpm and for AR exercise was 97.9 +/- 8.5 bpm, =1.42>. There was a statistically significant difference in the remaining variables between AR and DCR exercise (t.01(14)). The mean systolic blood pressure during DCR exercise was 137.1 +/- 7.0 nvn Hg. and 149.2 +/- 7.0 ran Hg. for AR exercise. The mean diastolic blood pressure for DCR exercise was 91.1 +/- 6.1 ran Hg. and 102.3 +/- 6.0 mm Hg. for AR exercise. The mean rate pressure product during DCR exercise was 134.0 +/- 16.8 and 146.6 +/- 17.8 for AR exercise. The mean increase pre- to post-test of blood lactate foor DCR exercise was 5.0 +/- 0.9 mmol·L⁻¹ and 6. 8 +/- 0.9 mmol·L⁻¹ for AR exercise. The mean RPE value during DCR exercise was 8. 6 +/- 0.5 and 10.1 +/- 0.3 for AR exercise. These data suggest that populations who may be at risk because of hitfi physiologic responses, i.e., hypertense, cardiac, and aged patients, would be better served if provided access to DCR equipment rather than AR equipment.


Includes bibliographical references (pages [30]-33)


40 pages




Northern Illinois University

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