Rex D. Brown

Publication Date


Document Type


First Advisor

Plowman, Sharon A.

Degree Name

M.S. Ed. (Master of Education)

Legacy Department

Department of Physical Education


Exercise--Physiological aspects; Weight lifting--Physiological aspects


Twelve trained (T) and twelve untrained (UT) subjects performed four, 5 set, bench press protocols at 80% 1 RM during which the rest periods were set at 300s, 120s, 90s, and 30s. All protocols produced muscular fatigue indicated by a decrease in the number of repetitions per set from set 1 to set 5. Significant interactions existed for Peak RPE and total load (T L ) between protocols and groups (p < 0 .05). There was a significant difference between T and UT for Peak RPE in Rest300 and Restl20 (p<0.05). There was no significant difference between T and UT for Peak RPE in Rest90 and Rest30 (p>0.05). For T, all protocols produced significantly different (p<0.05) Peak RPE with the exception of Restl20 compared to Rest90 {p > 0 .05). For TL, T and UT were significantly different from each other within each protocol (p<0.05). Within group, T performed significantly different TL between protocols (p<0.05). UT were not significantly different comparing Restl20 and Rest90 only (p>0.05). By protocol, the longer the resting period, the more total repetitions (TREPS) performed with all protocols being significantly different from each other (p<0.05). Pretest blood lactate (BL) concentrations were not different between protocols (p>0.05). However, BL accumulation (BLA) was greater in protocols with longer resting periods and were significantly different from each other (p<0.05). Training volume (TV) (number of repetitions per unit of time) was significantly different between all protocols (p < 0 .05). A significant group effect existed for BLA, where T was higher than UT for each protocol (p<0.05). When work is not held constant, BLA appears to be dependent upon TL. Since more TL can be done with longer rest periods, BLA should be highest in the longer rest period protocol. Rest300 was the protocol with the least amount of muscular fatigue and RPE while accomplishing the greatest amount of TL and BLA.


Includes bibliographical references (pages [26]-27)


v, 66 pages




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