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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

HORMONAL RESPONSES TO DIFFERENT RESISTANCE EXERCISE SCHEMES OF SIMILAR TOTAL VOLUME

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Author(s):
Uchida, Marco C. [1, 2] ; Crewther, Blair T. [3] ; Ugrinowitsch, Carlos [4] ; Bacurau, Reury Frank P. [5] ; Moriscot, Anselmo S. [1] ; Aoki, Marcelo S. [5]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Dept Cell & Dev Biol, Inst Biomed Sci, Sao Paulo - Brazil
[2] UNIFIEO, Dept Biol Sci & Hlth, Osasco - Brazil
[3] Hort & Food Res Inst New Zealand Ltd, Hamilton - New Zealand
[4] Univ Sao Paulo, Sch Phys Educ & Sport, Sao Paulo - Brazil
[5] Univ Sao Paulo, Sch Arts Sci & Humanities, Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: JOURNAL OF STRENGTH AND CONDITIONING RESEARCH; v. 23, n. 7, p. 2003-2008, OCT 2009.
Web of Science Citations: 21
Abstract

Uchida, MC, Crewther, BT, Ugrinowitsch, C, Bacurau, RFP, Moriscot, AS, and Aoki, MS. J Strength Cond Res 23(7): 2003-2008, 2009-This study assessed the effect of different resistance exercise scheme (RES) designs of similar total of load lifted on the responses of testosterone, cortisol, and creatine kinase (CK). Twenty-seven healthy males performed 1 of 4 bench press workouts described by the 1 repetition maximum (1RM) load: 4 sets of maximum repetitions at 50%-1RM (50%-1RM RES), 5 sets of maximum repetitions at 75%-1RM (75%-1RM RES), 10 sets of maximum repetitions at 90%-1RM (90%1RM RES), or 8 sets of maximum repetitions at 110%-1RM (110%-1RM RES). Each RES was equated by the total volume of load lifted (repetitions x sets x load). Blood samples, collected pre-exercise (Pre) and post-exercise (Post) at 1 and 24 hours (24 h), were analyzed for total and free testosterone, total cortisol, and CK. In general, testosterone and cortisol showed little change within or between the different RES (p > 0.05), possibly because of the relatively low volume lifted and/ or the small muscle mass activated by the bench press exercise. Cortisol was elevated after the 75%-1RM RES at the Post sample, with this response also exceeding the other RES (p < 0.05). The 24 h CK response was also elevated after the 75%-1RM RES (p < 0.05), thereby suggesting greater training strain for the same volume of load. These results confirm previous recommendations regarding the prescription of resistance exercise and the importance of total volume as a stimulus for activating the endocrine system and achieving long-term adaptation. (AU)