Endocrine response to acute resistance exercise in obese versus lean physically active men

Rubin, Daniela A.; Pham, Hoang; Adams, Eric; Tutor, Andrew R.; Hackney, Anthony C.; Coburn, Jared W.; Judelson, Daniel A.

doi:10.1007/s00421-015-3105-0

Cited by 10 publications

(7 citation statements)

References 40 publications

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“…Studies investigating the effect of exercise on serum testosterone concentrations in overweight and obese individuals also show conflicting results. Rubin et al [ 21 ] compared resistance exercise-associated serum testosterone changes in physically active lean vs. obese men. Although T-Testo was comparable between obese and lean individuals immediately after exercise, the levels were lower in the obese men (lean vs. obese: 20 vs. 8 nmol/L, p < 0.01) at 30 min into recovery.…”

Section: Part 1: Acute or Immediate Post-exercise Testosterone Resmentioning

confidence: 99%

Various Factors May Modulate the Effect of Exercise on Testosterone Levels in Men

Riachy

McKinney

Tuvdendorj

2020

JFMK

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Exercise has been proposed to increase serum testosterone concentrations. The analysis of existing literature demonstrates a large degree of variability in hormonal changes during exercise. In our manuscript, we summarized and reviewed the literature, and concluded that this variability can be explained by the effect of numerous factors, such as (a) the use of different types of exercise (e.g., endurance vs. resistance); (b) training intensity and/or duration of resting periods; (c) study populations (e.g., young vs. elderly; lean vs. obese; sedentary vs. athletes); and (d) the time point when serum testosterone was measured (e.g., during or immediately after vs. several minutes or hours after the exercise). Although exercise increases plasma testosterone concentrations, this effect depends on many factors, including the aforementioned ones. Future studies should focus on clarifying the metabolic and molecular mechanisms whereby exercise may affect serum testosterone concentrations in the short and long-terms, and furthermore, how this affects downstream mechanisms.

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Section: Part 1: Acute or Immediate Post-exercise Testosterone Resmentioning

confidence: 99%

Various Factors May Modulate the Effect of Exercise on Testosterone Levels in Men

Riachy

McKinney

Tuvdendorj

2020

JFMK

View full text Add to dashboard Cite

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“…Whilst acute exercise-induced elevations in IGF-I are consistently reported [14], the effect of exercise training on basal IGF-I is poorly understood, particularly in aging cohorts.…”

Section: Introductionmentioning

confidence: 99%

High-intensity interval training (HIIT) increases insulin-like growth factor-I (IGF-I) in sedentary aging men but not masters’ athletes: an observational study

et al. 2016

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“…Secondly, the resistance exercise protocol in this study is not one that is commonly used. However, the protocol created for this study allowed for us to safely investigate muscle strength in young people with PWS and has been shown to trigger hormonal and metabolic responses in both children (with and without PWS) [25] and adults [26]. Last, cardiovascular fitness was not measured and our groups may have had a wide range of cardiovascular fitness levels.…”

Section: Resultsmentioning

confidence: 99%

“…After a five-minute walking or cycling warm-up participants completed the exercise trial. The dynamic resistance protocol consisted of six sets of 10 repetitions per leg of a step-up exercise onto an adjustable height platform while wearing a weighted vest [25,26]. One-minute rest periods separated each set.…”

Section: Methodsmentioning

confidence: 99%

Obesity and Prader-Willi Syndrome Affect Heart Rate Recovery from Dynamic Resistance Exercise in Youth

et al. 2016

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Following exercise, heart rate decline is initially driven by parasympathetic reactivation and later by sympathetic withdrawal. Obesity delays endurance exercise heart rate recovery (HRR) in both children and adults. Young people with Prader-Willi Syndrome (PWS), a congenital cause for obesity, have shown a slower 60-s endurance exercise HRR compared to lean and obese children, suggesting compromised regulation. This study further evaluated effects of obesity and PWS on resistance exercise HRR at 30 and 60 s in children. PWS (8–18 years) and lean and obese controls (8–11 years) completed a weighted step-up protocol (six sets x 10 reps per leg, separated by one-minute rest), standardized using participant stature and lean body mass. HRR was evaluated by calculated HRR value (HRRV = difference between HR at test termination and 30 (HRRV30) and 60 (HRRV60) s post-exercise). PWS and obese had a smaller HRRV30 than lean (p < 0.01 for both). Additionally, PWS had a smaller HRRV60 than lean and obese (p = 0.01 for both). Obesity appears to delay early parasympathetic reactivation, which occurs within 30 s following resistance exercise. However, the continued HRR delay at 60 s in PWS may be explained by either blunted parasympathetic nervous system reactivation, delayed sympathetic withdrawal and/or poor cardiovascular fitness.

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Endocrine response to acute resistance exercise in obese versus lean physically active men

Cited by 10 publications

References 40 publications

Various Factors May Modulate the Effect of Exercise on Testosterone Levels in Men

Various Factors May Modulate the Effect of Exercise on Testosterone Levels in Men

High-intensity interval training (HIIT) increases insulin-like growth factor-I (IGF-I) in sedentary aging men but not masters’ athletes: an observational study

Obesity and Prader-Willi Syndrome Affect Heart Rate Recovery from Dynamic Resistance Exercise in Youth

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