Skeletal muscle mass in competitive physique-based athletes (bodybuilding, 212 bodybuilding, bikini, and physique divisions): A case series.

Autor: Moreno EN; USF Muscle Laboratory, Exercise Science Program, University of South Florida, Tampa, Florida, USA., Hammert WB; USF Muscle Laboratory, Exercise Science Program, University of South Florida, Tampa, Florida, USA.; Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, Mississippi, USA., Montgomery TR Jr; USF Muscle Laboratory, Exercise Science Program, University of South Florida, Tampa, Florida, USA.; Human Performance Lab, Kinesiology, Applied Health, and Recreation, Oklahoma State University, Stillwater, Oklahoma, USA., Abe T; Graduate School of Health and Sports Science, Institute of Health and Sports Science & Medicine, Juntendo University, Chiba, Japan., Loenneke JP; Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, University, Mississippi, USA., Buckner SL; USF Muscle Laboratory, Exercise Science Program, University of South Florida, Tampa, Florida, USA.
Jazyk: angličtina
Zdroj: American journal of human biology : the official journal of the Human Biology Council [Am J Hum Biol] 2024 Jan; Vol. 36 (1), pp. e23978. Date of Electronic Publication: 2023 Aug 10.
DOI: 10.1002/ajhb.23978
Abstrakt: Objectives: (1) To examine the muscle thickness of various muscle groups of the body to estimate the absolute and relative skeletal muscle mass (SM) in competitive physique-based athletes (Bodybuilding, 212 Bodybuilding, Bikini, and Physique divisions) and (2) to compare values across various divisions of competition and to resistance trained and non-resistance trained individuals.
Methods: Eight competitive physique-based athletes (2 M and 6 F), two recreationally resistance trained (1 M and 1 F) and two non-resistance trained (1 M and 1 F) participants had muscle thickness measured by ultrasound at nine sites on the anterior and posterior aspects of the body. SM was estimated from an ultrasound-derived prediction equation and SM index was used to adjust for the influence of standing height (i.e., divided by height squared).
Results: SM values ranged from 19.6 to 60.4 kg in the eight competitive physique-based athletes and 16.1 to 32.6 kg in the four recreationally resistance trained and non-resistance trained participants. SM index ranged from 7.2 to 17.9 kg/m 2 in the eight competitive physique-based athletes and 5.8 to 9.3 kg/m 2 in the four recreationally resistance trained and non-resistance trained participants.
Conclusion: Overall, varying magnitudes of SM and SM index were present across competitors and their respective divisions of bodybuilding. The Men's Open Bodybuilder in the present study had greater values of total SM and SM index compared to previously published values in the literature. Our data provides insight into the extent of SM present in this population and further extends the discussion regarding SM accumulation in humans.
(© 2023 Wiley Periodicals LLC.)
Databáze: MEDLINE
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