Tags

Type your tag names separated by a space and hit enter

Serum hormones and strength development during strength training in middle-aged and elderly males and females.
Acta Physiol Scand. 1994 Feb; 150(2):211-9.AP

Abstract

Effects of a 12-week progressive strength training period on serum concentrations of testosterone, cortisol and sex-hormone-binding globulin (SHBG) as well as on strength development of the leg extensor muscles were investigated in nine middle-aged males (M50; range 44-57 years) and in nine middle-aged females (F50; range 43-54 years) as well as in 10 elderly males (M70; range 64-73 years) and in 11 elderly females (F70; range 66-73 years). Substantial increases took place in maximal isometric strength during the 12-week training period both in M50 (from 2834 +/- 452 to 3941 +/- 772 N; P < 0.001) and in F50 (from 2627 +/- 725 to 3488 +/- 1017 N; P < 0.001) as well as in M70 (from 2591 +/- 736 to 3075 +/- 845 N; P < 0.01) and in F70 (from 1816 +/- 427 to 2483 +/- 408 N; P < 0.001). The relative increases in strength during the 12-week training period did not differ significantly between the groups. However, during the last 4 weeks of the training none of the groups demonstrated further increases in strength but it actually decreased in F50 (P < 0.05), M70 (P < 0.01) and in F70 (P < 0.05). No systematic changes were observed during the training in the mean concentrations of serum total testosterone, free testosterone, cortisol, and SHBG, nor in testosterone/cortisol and testosterone/SHBG ratios. However, the individual levels of serum testosterone and testosterone/cortisol ratio and the individual changes in strength during the last four most intensive training weeks of the 12-week period were in significant positive linear correlation in F70 (r = 0.57; P < 0.05) and in M70 (r = 0.61; P < 0.05).(

ABSTRACT

TRUNCATED AT 250 WORDS)

Authors+Show Affiliations

Department of Biology of Physical Activity, University of Jyväskylä, Finland.No affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

8191900

Citation

Häkkinen, K, and A Pakarinen. "Serum Hormones and Strength Development During Strength Training in Middle-aged and Elderly Males and Females." Acta Physiologica Scandinavica, vol. 150, no. 2, 1994, pp. 211-9.
Häkkinen K, Pakarinen A. Serum hormones and strength development during strength training in middle-aged and elderly males and females. Acta Physiol Scand. 1994;150(2):211-9.
Häkkinen, K., & Pakarinen, A. (1994). Serum hormones and strength development during strength training in middle-aged and elderly males and females. Acta Physiologica Scandinavica, 150(2), 211-9.
Häkkinen K, Pakarinen A. Serum Hormones and Strength Development During Strength Training in Middle-aged and Elderly Males and Females. Acta Physiol Scand. 1994;150(2):211-9. PubMed PMID: 8191900.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Serum hormones and strength development during strength training in middle-aged and elderly males and females. AU - Häkkinen,K, AU - Pakarinen,A, PY - 1994/2/1/pubmed PY - 1994/2/1/medline PY - 1994/2/1/entrez SP - 211 EP - 9 JF - Acta physiologica Scandinavica JO - Acta Physiol. Scand. VL - 150 IS - 2 N2 - Effects of a 12-week progressive strength training period on serum concentrations of testosterone, cortisol and sex-hormone-binding globulin (SHBG) as well as on strength development of the leg extensor muscles were investigated in nine middle-aged males (M50; range 44-57 years) and in nine middle-aged females (F50; range 43-54 years) as well as in 10 elderly males (M70; range 64-73 years) and in 11 elderly females (F70; range 66-73 years). Substantial increases took place in maximal isometric strength during the 12-week training period both in M50 (from 2834 +/- 452 to 3941 +/- 772 N; P < 0.001) and in F50 (from 2627 +/- 725 to 3488 +/- 1017 N; P < 0.001) as well as in M70 (from 2591 +/- 736 to 3075 +/- 845 N; P < 0.01) and in F70 (from 1816 +/- 427 to 2483 +/- 408 N; P < 0.001). The relative increases in strength during the 12-week training period did not differ significantly between the groups. However, during the last 4 weeks of the training none of the groups demonstrated further increases in strength but it actually decreased in F50 (P < 0.05), M70 (P < 0.01) and in F70 (P < 0.05). No systematic changes were observed during the training in the mean concentrations of serum total testosterone, free testosterone, cortisol, and SHBG, nor in testosterone/cortisol and testosterone/SHBG ratios. However, the individual levels of serum testosterone and testosterone/cortisol ratio and the individual changes in strength during the last four most intensive training weeks of the 12-week period were in significant positive linear correlation in F70 (r = 0.57; P < 0.05) and in M70 (r = 0.61; P < 0.05).(ABSTRACT TRUNCATED AT 250 WORDS) SN - 0001-6772 UR - https://www.unboundmedicine.com/medline/citation/8191900/Serum_hormones_and_strength_development_during_strength_training_in_middle_aged_and_elderly_males_and_females_ L2 - https://doi.org/10.1111/j.1748-1716.1994.tb09678.x DB - PRIME DP - Unbound Medicine ER -