EFFECTS OF AGE ON TESTOSTERONE RESPONSES TO RESISTANCE EXERCISE AND MUSCULOSKELETAL VARIABLES IN MEN

@article{Baker2006EFFECTSOA,
  title={EFFECTS OF AGE ON TESTOSTERONE RESPONSES TO RESISTANCE EXERCISE AND MUSCULOSKELETAL VARIABLES IN MEN},
  author={Jeremy Baker and Michael G. Bemben and Mark A. Anderson and Debra A. Bemben},
  journal={Journal of Strength and Conditioning Research},
  year={2006},
  volume={20},
  pages={874–881}
}
This study compared serum total testosterone (TT) and free testosterone (FT) responses of young (20–26 years, n = 8), middle-aged (38–53 years, n = 7), and older (59–72 years, n = 9) men to resistance exercise. We also examined the relationships between testosterone (T) levels and strength, bone mineral density (BMD), and body composition variables for each age group. Subjects were tested for isotonic muscular strength (1 repetition maximum [1RM]), BMD (dualenergy x-ray absorptiometry [DXA… 

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References

SHOWING 1-10 OF 32 REFERENCES
Measures of bioavailable serum testosterone and estradiol and their relationships with muscle strength, bone density, and body composition in elderly men.
TLDR
Bioavailable T, E1, total E2, and bioavailable E2 all decrease with age in healthy old men, and non-SHBG-bound T seems to be the best parameter for serum levels of bioactive T, which seems to play a direct role in the various physiological changes that occur during aging.
Effects of heavy-resistance training on hormonal response patterns in younger vs. older men.
TLDR
The data indicate that older men do respond with an enhanced hormonal profile in the early phase of a resistance training program, but the response is different from that of younger men.
Testosterone, growth hormone and IGF-I responses to acute and chronic resistive exercise in men aged 55-70 years.
TLDR
It is concluded that an acute bout of resistive exercise causes a substantial hGH response in older men, but 16 wks of progressive resistive training does not affect baseline concentrations of the anabolic hormones.
Effects of testosterone supplementation in the aging male.
  • J. S. Tenover
  • Medicine
    The Journal of clinical endocrinology and metabolism
  • 1992
TLDR
Short term TE supplementation to healthy older men who have serum T levels near or below the lower limit of normal for young adult men results in an increase in lean body mass and possibly a decline in bone resorption, as assessed by urinary hydroxyproline excretion, with some effect on serum lipoproteins, hematological parameters, and PSA.
Basal concentrations and acute responses of serum hormones and strength development during heavy resistance training in middle-aged and elderly men and women.
TLDR
The present strength training led to great increases in maximal strength not only in middle-aged but also in elderly men and women, and testosterone may be a limiting factor in strength development and testosterone could mediate interactions with the nervous system contributing to strength development.
Acute hormone responses to heavy resistance lower and upper extremity exercise in young versus old men
TLDR
The present data would indicate that the responses of GH, TT and FT to heavy resistance isometric exercise are lowered with increasing age, which may indicate decreased anabolic effects on muscles and may explain in part the loss of muscle mass and strength associated with aging.
The effect of exercise on the production and clearance of testosterone in well trained young men
TLDR
It is suggested that the exercise-induced elevation of testosterone level is due solely to the reduction in the rate at which testosterone is cleared from the plasma, and that changes in the extrahepatic clearance of testosterone may also be involved.
Acute hormonal responses to heavy resistance exercise in men and women at different ages.
TLDR
The primary results indicate that the response of GH concentrations to the same relative heavy resistance work load is greatly lowered with increasing age both in men and women, while acute responses in testosterone levels are minor.
Bone density and bone-related biochemical variables in normal men: a longitudinal study.
TLDR
In normal men, bone loss increases with age; there does not appear to be any relationship between this loss and either markers of bone turnover or levels of free androgen or estrogen.
Lack of association between free testosterone and bone density separate from age in elderly males
TLDR
It is suspected that the inability to detect a significant effect of FT on bone density was related to the relative strength of other determinants of bone density, as well as to the fact that FT values are far more dynamic than bone density.
...
1
2
3
4
...