Detraining Produces Minimal Changes in Physical Performance and Hormonal Variables in Recreationally Strength-Trained Men
- ASU Author/Contributor (non-ASU co-authors, if there are any, appear on document)
- N. Travis Triplett Ph.D., Professor (Creator)
- Institution
- Appalachian State University (ASU )
- Web Site: https://library.appstate.edu/
Abstract: The object of this study was to examine changes in muscular
strength, power, and resting hormonal concentrations during
6 weeks of detraining (DTR) in recreationally strengthtrained
men. Each subject was randomly assigned to either
a DTR (n 5 9) or resistance training (RT; n 5 7) group after
being matched for strength, body size, and training experience.
Muscular strength and power testing, anthropometry,
and blood sampling were performed before the experimental
period (T1), after 3 weeks (T2), and after the 6-week experimental
period (T3). One-repetition maximum (1RM) shoulder
and bench press increased in RT at T3 (p # 0.05), whereas
no significant changes were observed in DTR. Peak power
output and mean power output significantly decreased (9
and 10%) in DTR at T2. Peak torque of the elbow flexors at
908 did not change in the RT group but did significantly
decrease by 11.9% at T3 compared with T1 in the DTR
group. Vertical jump height increased in RT at T2 but did
not change in DTR. Neither group displayed any changes in
1RM squat, body mass, percent body fat, or resting concentrations
of growth hormone, follicle-stimulating hormone, luteinizing
hormone, sex hormone–binding globulin, testosterone,
cortisol, or adrenocorticotropin. These data demonstrate
that 6 weeks of resistance DTR in recreationally trained men
affects power more than it does strength without any accompanying
changes in resting hormonal concentrations. For the
recreational weight trainer, losses in strength over 6 weeks
are less of a concern compared with anaerobic power and
upper arm isometric force production. Anaerobic power exercise
with a high metabolic component coming from glycolysis
might be of importance for reducing the impact of
DTR on Wingate power performances. A minimal maintenance
training program is recommended for the recreational
lifter to offset any reductions in performance.
Detraining Produces Minimal Changes in Physical Performance and Hormonal Variables in Recreationally Strength-Trained Men
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Created on 6/16/2011
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Additional Information
- Publication
- Kraemer, W.J., Koziris, L.P., Ratamess, N.A., Häkkinen, K., Triplett-McBride, N.T., Fry, A.C., Gordon, S.E., Volek, J.S., French, D.N., Rubin, M.R., Gomez, A.L., Sharman, M.J., Lynch, J.M., Izquierdo, M., Newton, R.U., and Fleck, S.J. (2002), Detraining produces minimal changes in physical performance and hormonal variables in recreationally strength-trained men. Journal of Strength and Conditioning Research 16(3), 373-382. (Aug 2002) Published by National Strength and Conditioning Association (ISSN: 1533-4287). Original version available from publisher’s web site: http://www.nsca-lift.org
- Language: English
- Date: 2002