Acute Endocrine Responses With Long-Term Weight Lifting in a 51-Year-Old Male Weightlifter

• Autores: Drake A Eserhaut, Andrew C. Fry, Michael H. Stone, William J. Kraemer
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 39, Nº. 8, 2025, págs. 900-907
• Idioma: inglés
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• Resumen

  • To study the effects of long-term (>35 years) competitive weightlifting on acute endocrine activity, a 51-year-old male two-time Olympian in weightlifting (Subject A) was compared with highly trained young male weightlifters (controls, n = 23; age = 17.7 +/- 0.3 years). Between 1400 and 1700 hours, subjects performed 15 maximum effort vertical jumps, a series of single repetitions of the snatch progressing to a maximal effort, and 3 x 10 snatch pulls at 60% 1 repetition maximum. Blood sampling occurred at 0700 hours, pre-exercise, and +5 and +15 minutes postexercise. Exercise performances were comparable between Subject A and controls and elicited similar lactate responses at +5 minutes (mmol[middle dot]L-1; A = 9.2; controls = 8.1 +/- 0.4). Resting testosterone at 0700 hours was lower for Subject A than for the controls (nmol[middle dot]L-1; A = 13.9; controls = 25.4 +/- 2.0), although acute responses at +5 minutes were comparable (A = 21.6; controls 18.3 +/- 1.5). Cortisol responses (nmol[middle dot]L-1; A = 468.4, controls = 540.6 +/- 32.3) and testosterone:cortisol ratio (A = 0.0461; controls = 0.0376 +/- 0.004) were similar at +5 minutes. Subject A showed no 22 kDa growth hormone response at +5 minutes, while controls exhibited a substantial increase ([micro]g[middle dot]L-1; A = 0.4; controls = 16.7 +/- 2.6). [beta]-endorphin responses were no different at +15 minutes for Subject A relative to controls (pmol[middle dot]L-1; A = 30.1; controls = 33.8 +/- 3.7). Resting and exercise-induced endocrine physiology is partially modified with aging despite long-term participation in competitive weightlifting. Importantly, Subject A's testosterone response was largely preserved.