|Title:||The upper extremity of the professional tennis player: muscle volumes, fiber-type distribution and muscle strength||Authors:||Sanchis-Moysi, J.
Calbet, J. A.L.
|UNESCO Clasification:||241106 Fisiología del ejercicio||Keywords:||Human Skeletal-Muscle
Heavy, et al
|Issue Date:||2010||Publisher:||0905-7188||Journal:||Scandinavian Journal of Medicine and Science in Sports||Abstract:||The effects of professional tennis participation on dominant and non‐dominant upper extremity muscle volumes, and on fiber types of triceps brachii (lateral head) and vastus lateralis muscles were assessed in 15 professional tennis players. Magnetic resonance imaging (MRI, n=8) examination and dual‐energy x‐ray absorptiometry (DXA, n=7) were used to assess muscle volumes and lean body mass. Muscle fiber‐type distribution assessed by biopsy sampling was similar in both triceps brachii (2/3 were type 2 and 1/3 type 1 fibers). The VL was composed of 1/3 of type 2 and 2/3 of type 1 fibers. The dominant had 12–15% higher lean mass (DXA/MRI) than the non‐dominant (P<0.05). Type 1, 2a and 2x muscle fibers of the dominant were hypertrophied compared with the non‐dominant by 20%, 22% and 34% (all P<0.01), respectively. The deltoid, triceps brachii, arm flexors and forearm superficial flexor muscles of the dominant were hypertrophied (MRI) compared with the non‐dominant by 11–15%. These muscles represented a similar fraction of the whole muscle volume in both upper extremities. Dominant muscle volume was correlated with 1RM on the one‐arm cable triceps pushdown exercise (r=0.84, P<0.05). Peak power during vertical jump correlated with VL muscle fibers's cross‐sectional area (r=0.82–0.95, P<0.05).||URI:||http://hdl.handle.net/10553/48345||ISSN:||0905-7188||DOI:||10.1111/j.1600-0838.2009.00969.x||Source:||Scandinavian Journal of Medicine and Science in Sports[ISSN 0905-7188],v. 20, p. 524-534|
|Appears in Collections:||Artículos|
checked on Jul 17, 2022
WEB OF SCIENCETM
checked on Feb 20, 2022
checked on Jan 7, 2023
Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.