Document Type
Article
Publication Date
12-2020
Publication Title
Growth Hormone & IGF Research
Publisher
Elsevier, Inc
Keywords
Floatation-Restricted Environmental Stimulation Therapy, Bioactive Growth Hormone, Exercise Stress, Strength, Physical Training
Abstract
Objective
The purpose of this study was to examine the influence of a novel “floatation-restricted environmental stimulation therapy” (floatation-REST) on growth hormone responses to an intense resistance exercise stress.
Design
Nine resistance trained men (age: 23.4 ± 2.5 yrs.; height: 175.3 ± 5.4 cm; body mass: 85.3 ± 7.9 kg) completed a balanced, crossover-controlled study design with two identical exercise trials, differing only in post-exercise recovery intervention (i.e., control or floatation-REST). A two-week washout period was used between experimental conditions. Plasma lactate was measured pre-exercise, immediately post-exercise and after the 1 h. recovery interventions. Plasma iGH was measured pre-exercise, immediately-post exercise, and after the recovery intervention, as well as 24 h and 48 h after the exercise test. The bGH-L was measured only at pre-exercise and following each recovery intervention.
Results
For both experimental conditions, a significant (P ≤ 0.05) increase in lactate concentrations were observed immediately post-exercise (~14 mmol • L-1) and remained slightly elevated after the recovery condition. The same pattern of responses was observed for iGH with no differences from resting values at 24 and 48 h of recovery. The bGH-L showed no exercise-induced changes following recovery with either treatment condition, however concentration values were dramatically lower than ever reported.
Conclusion
The use of floatation-REST therapy immediately following intense resistance exercise does not appear to influence anterior pituitary function in highly resistance trained men. However, the lower values of bGH suggest dramatically different molecular processing mechanisms at work in this highly trained population.
Volume
55
Repository Citation
Kraemer, William J.; Caldwell, Lydia K.; Post, Emily M.; Beeler, Matthew K.; Dickerson, Ryan M.; Kennett, Mary J.; Maresh, Carl M.; and Hymer, Wesley C., "Recovery using “float” from high intensity stress on growth hormone-like molecules in resistance trained men" (2020). Health and Sport Sciences Faculty Scholarship. 36.
https://digitalcommons.otterbein.edu/hsports_fac/36
Original Citation
William J. Kraemer, Lydia K. Caldwell, Emily M. Post, Matthew K. Beeler, Ryan M. Dickerson, Mary J. Kennett, Jeff S. Volek, Carl M. Maresh, Wesley C. Hymer, Recovery using “float” from high intensity stress on growth hormone-like molecules in resistance trained men, Growth Hormone & IGF Research, Volume 55, 2020, 101355, ISSN 1096-6374, https://doi.org/10.1016/j.ghir.2020.101355. (https://www.sciencedirect.com/science/article/pii/S1096637420300642) Abstract: Objective The purpose of this study was to examine the influence of a novel “floatation-restricted environmental stimulation therapy” (floatation-REST) on growth hormone responses to an intense resistance exercise stress. Design Nine resistance trained men (age: 23.4 ± 2.5 yrs.; height: 175.3 ± 5.4 cm; body mass: 85.3 ± 7.9 kg) completed a balanced, crossover-controlled study design with two identical exercise trials, differing only in post-exercise recovery intervention (i.e., control or floatation-REST). A two-week washout period was used between experimental conditions. Plasma lactate was measured pre-exercise, immediately post-exercise and after the 1 h. recovery interventions. Plasma iGH was measured pre-exercise, immediately-post exercise, and after the recovery intervention, as well as 24 h and 48 h after the exercise test. The bGH-L was measured only at pre-exercise and following each recovery intervention. Results For both experimental conditions, a significant (P ≤ 0.05) increase in lactate concentrations were observed immediately post-exercise (~14 mmol • L-1) and remained slightly elevated after the recovery condition. The same pattern of responses was observed for iGH with no differences from resting values at 24 and 48 h of recovery. The bGH-L showed no exercise-induced changes following recovery with either treatment condition, however concentration values were dramatically lower than ever reported. Conclusion The use of floatation-REST therapy immediately following intense resistance exercise does not appear to influence anterior pituitary function in highly resistance trained men. However, the lower values of bGH suggest dramatically different molecular processing mechanisms at work in this highly trained population. Keywords: Floatation-restricted environmental stimulation therapy; Bioactive growth hormone; Exercise stress; Strength; Physical training
DOI
10.1016/j.ghir.2020.101355
Peer Reviewed
1
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.