The salivary testosterone and cortisol response to three loading schemes

Blair Crewther, John Cronin, Justin Keogh, Christian Cook

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

This aim of this study was to examine the free hormone (in saliva) responses to squat workouts performed by recreationally weight-trained males, using either a power (8 sets of 6 reps, 45% 1 repetition maximum [1RM], 3-minute rest periods, ballistic movements), hypertrophy (10 sets of 10 reps, 75% 1RM, 2-minute rest periods, controlled movements), or maximal strength scheme (6 sets of 4 reps, 88% 1RM, 4-minute rest periods, explosive intent). To determine the relative importance of the different training variables, these schemes were equated by workout duration with the power and strength schemes also equated by load volume. Salivary testosterone (T) and cortisol (C) both increased following the hypertrophy scheme (P < 0.05), with little to no hormonal change across the power and maximal strength schemes (P > 0.05). In general, the postexercise T and C responses to the hypertrophy scheme exceeded the other two schemes (P < 0.05). The greater volume of load lifted in the hypertrophy protocol over the same workout duration may explain the endocrine differences observed. The similar T and C responses to the power and maximal strength schemes (of equal volume) support such a view and suggest that differences in load intensity, rest periods, and technique are secondary to volume. Because the acute hormonal responses to resistance exercise contribute to protein metabolism, then load volume may be the most important workout variable activating the endocrine system and stimulating muscle growth.

Original languageEnglish
Pages (from-to)250-255
Number of pages6
JournalJournal of Strength and Conditioning Research
Volume22
Issue number1
DOIs
Publication statusPublished - Jan 2008
Externally publishedYes

Fingerprint

Hypertrophy
Hydrocortisone
Testosterone
Endocrine System
Saliva
Hormones
Weights and Measures
Muscles
Growth
Proteins

Cite this

Crewther, Blair ; Cronin, John ; Keogh, Justin ; Cook, Christian. / The salivary testosterone and cortisol response to three loading schemes. In: Journal of Strength and Conditioning Research. 2008 ; Vol. 22, No. 1. pp. 250-255.
@article{31af23f572974ab7831dd3de48305fbb,
title = "The salivary testosterone and cortisol response to three loading schemes",
abstract = "This aim of this study was to examine the free hormone (in saliva) responses to squat workouts performed by recreationally weight-trained males, using either a power (8 sets of 6 reps, 45{\%} 1 repetition maximum [1RM], 3-minute rest periods, ballistic movements), hypertrophy (10 sets of 10 reps, 75{\%} 1RM, 2-minute rest periods, controlled movements), or maximal strength scheme (6 sets of 4 reps, 88{\%} 1RM, 4-minute rest periods, explosive intent). To determine the relative importance of the different training variables, these schemes were equated by workout duration with the power and strength schemes also equated by load volume. Salivary testosterone (T) and cortisol (C) both increased following the hypertrophy scheme (P < 0.05), with little to no hormonal change across the power and maximal strength schemes (P > 0.05). In general, the postexercise T and C responses to the hypertrophy scheme exceeded the other two schemes (P < 0.05). The greater volume of load lifted in the hypertrophy protocol over the same workout duration may explain the endocrine differences observed. The similar T and C responses to the power and maximal strength schemes (of equal volume) support such a view and suggest that differences in load intensity, rest periods, and technique are secondary to volume. Because the acute hormonal responses to resistance exercise contribute to protein metabolism, then load volume may be the most important workout variable activating the endocrine system and stimulating muscle growth.",
keywords = "Endocrine, Hypertrophy, Power, Squat, Strength",
author = "Blair Crewther and John Cronin and Justin Keogh and Christian Cook",
year = "2008",
month = "1",
doi = "10.1519/JSC.0b013e31815f5f91",
language = "English",
volume = "22",
pages = "250--255",
journal = "Journal of Strength and Conditioning Research",
issn = "1064-8011",
publisher = "NSCA National Strength and Conditioning Association",
number = "1",

}

The salivary testosterone and cortisol response to three loading schemes. / Crewther, Blair; Cronin, John; Keogh, Justin; Cook, Christian.

In: Journal of Strength and Conditioning Research, Vol. 22, No. 1, 01.2008, p. 250-255.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The salivary testosterone and cortisol response to three loading schemes

AU - Crewther, Blair

AU - Cronin, John

AU - Keogh, Justin

AU - Cook, Christian

PY - 2008/1

Y1 - 2008/1

N2 - This aim of this study was to examine the free hormone (in saliva) responses to squat workouts performed by recreationally weight-trained males, using either a power (8 sets of 6 reps, 45% 1 repetition maximum [1RM], 3-minute rest periods, ballistic movements), hypertrophy (10 sets of 10 reps, 75% 1RM, 2-minute rest periods, controlled movements), or maximal strength scheme (6 sets of 4 reps, 88% 1RM, 4-minute rest periods, explosive intent). To determine the relative importance of the different training variables, these schemes were equated by workout duration with the power and strength schemes also equated by load volume. Salivary testosterone (T) and cortisol (C) both increased following the hypertrophy scheme (P < 0.05), with little to no hormonal change across the power and maximal strength schemes (P > 0.05). In general, the postexercise T and C responses to the hypertrophy scheme exceeded the other two schemes (P < 0.05). The greater volume of load lifted in the hypertrophy protocol over the same workout duration may explain the endocrine differences observed. The similar T and C responses to the power and maximal strength schemes (of equal volume) support such a view and suggest that differences in load intensity, rest periods, and technique are secondary to volume. Because the acute hormonal responses to resistance exercise contribute to protein metabolism, then load volume may be the most important workout variable activating the endocrine system and stimulating muscle growth.

AB - This aim of this study was to examine the free hormone (in saliva) responses to squat workouts performed by recreationally weight-trained males, using either a power (8 sets of 6 reps, 45% 1 repetition maximum [1RM], 3-minute rest periods, ballistic movements), hypertrophy (10 sets of 10 reps, 75% 1RM, 2-minute rest periods, controlled movements), or maximal strength scheme (6 sets of 4 reps, 88% 1RM, 4-minute rest periods, explosive intent). To determine the relative importance of the different training variables, these schemes were equated by workout duration with the power and strength schemes also equated by load volume. Salivary testosterone (T) and cortisol (C) both increased following the hypertrophy scheme (P < 0.05), with little to no hormonal change across the power and maximal strength schemes (P > 0.05). In general, the postexercise T and C responses to the hypertrophy scheme exceeded the other two schemes (P < 0.05). The greater volume of load lifted in the hypertrophy protocol over the same workout duration may explain the endocrine differences observed. The similar T and C responses to the power and maximal strength schemes (of equal volume) support such a view and suggest that differences in load intensity, rest periods, and technique are secondary to volume. Because the acute hormonal responses to resistance exercise contribute to protein metabolism, then load volume may be the most important workout variable activating the endocrine system and stimulating muscle growth.

KW - Endocrine

KW - Hypertrophy

KW - Power

KW - Squat

KW - Strength

UR - http://www.scopus.com/inward/record.url?scp=41649087400&partnerID=8YFLogxK

U2 - 10.1519/JSC.0b013e31815f5f91

DO - 10.1519/JSC.0b013e31815f5f91

M3 - Article

VL - 22

SP - 250

EP - 255

JO - Journal of Strength and Conditioning Research

JF - Journal of Strength and Conditioning Research

SN - 1064-8011

IS - 1

ER -