Resistance training-induced appendicular lean tissue mass changes are largely unrelated to pre-training bone characteristics in a larger cohort of untrained adults
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Le résumé fourni par la source
ABSTRACT We sought to determine if pre-intervention bone characteristics measured by dual-energy x-ray absorptiometry (DXA) were associated with changes in bone-free lean tissue mass following a period of resistance training in a large cohort of untrained adults (n=119, 62M/57F, 26.0±4.7 kg/m 2 , age range = 18-70 years old). Participants completed 10-12 weeks of supervised whole-body resistance training twice weekly, and DXA scans were obtained approximately the same time of day prior to the intervention and 48-72 hours following the final training bout. Associations between baseline skeletal measures (e.g., appendicular bone characteristics, shoulder and hip widths) and training induced changes in appendicular lean mass were examined by estimating correlations between participant-level random slopes (reflecting change over time) and baseline skeletal measures. The same approach was used to evaluate associations between other participant attributes (e.g., age, training volume-load, self-reported energy intake) and appendicular lean tissue mass changes. Modeling was also used to explore whether baseline skeletal characteristics (e.g., shoulder and hip widths) moderated the change in appendicular lean tissue mass from training. All analyses used a Bayesian framework, and interpretation focused on estimated effect sizes and their associated credible intervals rather than formal null hypothesis testing. Strong positive associations were observed between pre-intervention characteristics including dual-arm lean tissue mass and dual-arm bone mineral content ( r =0.90), dual-leg lean tissue mass and dual-leg bone mineral content ( r =0.86), dual-leg lean tissue mass and pelvic mineral content ( r =0.73), and dual-arm lean tissue mass and shoulder width ( r =0.76). In contrast, weak associations were observed between training-induced changes in appendicular lean tissue mass versus bone characteristics, training volume-load, self-reported energy intake, self-reported protein intake, BMI, and age (−0.08≤ r ≤ 0.24). After adjusting for sex, multivariable analyses indicated minimal evidence that skeletal characteristics moderated the hypertrophic response to training. These findings do not support a meaningful role of pre-training bone characteristics in influencing the lean tissue mass adaptations to shorter-term resistance training.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Resistance training-induced appendicular lean tissue mass changes are largely unrelated to pre-training bone characteristics in a larger cohort of untrained adults
- Date Crossref
- 31/05/2025
- Éditeur
- openRxiv
- Type
- posted-content
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Auburn University Department of Nutritional Sciences pays non établi dans la noticeUniversité ou école supérieure
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Edward Via College of Osteopathic Medicine pays non établi dans la noticeUniversité ou école supérieure
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Kansas State University Department of Kinesiology pays non établi dans la noticeUniversité ou école supérieure
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Lehman College Department of Exercise Sciences and Recreation pays non établi dans la noticeUniversité ou école supérieure
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Pacific Northwest University of Health Sciences pays non établi dans la noticeUniversité ou école supérieure
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Robert Gordon University pays non établi dans la noticeUniversité ou école supérieure
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School of Kinesiology pays non établi dans la noticeUniversité ou école supérieure
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School of Health pays non établi dans la noticeUniversité ou école supérieure
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College of Nursing pays non établi dans la noticeUniversité ou école supérieure
Department of Nutritional Sciences — Auburn University, Edward Via College of Osteopathic Medicine et Department of Kinesiology — Kansas State University, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.