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Salivary hormonal values from high-speed resistive exercise workouts.

Abstract：

:Our study purpose examined salivary hormonal responses to high-speed resistive exercise. Healthy subjects (n = 45) performed 2 elbow flexor workouts on a novel (inertial kinetic exercise; Oconomowoc, WI, USA) strength training device. Our methods included saliva sample collection at both preexercise and immediately postexercise; workouts entailed two 60-second sets separated by a 90-second rest period. The samples were analyzed in duplicate for their testosterone and cortisol concentrations ([T], [C]). Average and maximum elbow flexor torque were measured from each exercise bout; they were later analyzed with a 2(gender) × 2(workout) analysis of variance (ANOVA) with repeated measures for workout. The [T] and [C] each underwent a 2(gender) × 2(time) ANOVA with repeated measures for time. A within-subject design was used to limit error variance. Average and maximum torque each had gender (men > women; p < 0.05) effects. The [T] elicited a 2-way interaction (p < 0.05), as men incurred a significant 14% increase over time, but women's values were unchanged. Yet multivariate regression revealed that 3 predictor variables (body mass and average and maximum torques) did not account for a significant amount of variance associated with the rise in male [T]. Changes in [C] were not significant. In conclusion, changes in [T] concur with the results from other studies that showed significant elevations in male [T], despite the brevity of current workouts and the rather modest volume of muscle mass engaged. Practical applications imply that salivary assays may be a viable alternative to blood draws from athletes, yet coaches and others who may administer this treatment should know that our results may have produced greater pre-post hormonal changes if postexercise sample collection had occurred at a later time point.

journal_name

J Strength Cond Res

journal_title

Journal of strength and conditioning research

authors

Caruso JF,Lutz BM,Davidson ME,Wilson K,Crane CS,Craig CE,Nissen TE,Mason ML,Coday MA,Sheaff RJ,Potter WT

doi

10.1519/JSC.0b013e31822c7267

subject

Has Abstract

pub_date

2012-03-01 00:00:00

pages

625-32

issue

eissn

1064-8011

issn

1533-4287

journal_volume

pub_type

临床试验,杂志文章

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Salivary hormonal values from high-speed resistive exercise workouts.