Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/48344
Title: Marked effects of pilates on the abdominal muscles: A longitudinal magnetic resonance imaging study
Authors: Dorado, Cecilia 
Calbet, Jose A L 
Lopez-Gordillo, Ana
Alayon, Santiago
Sanchis-Moysi, Joaquin 
UNESCO Clasification: 241106 Fisiología del ejercicio
Keywords: Low-Back-Pain
Cross-Sectional Area
Transversus Abdominis
Trunk Muscles
Exercises, et al
Issue Date: 2012
Publisher: 0195-9131
Journal: Medicine and Science in Sports and Exercise 
Abstract: PURPOSE: The study's purpose was to analyze the effects of Pilates on the volume of the rectus abdominis (RA), obliques, and transversus abdominis, with the last two considered conjointly (OT). METHODS: The volume of OT and RA were determined using magnetic resonance imaging in nine nonactive healthy women, before and after 36 wk of a standardized Pilates training program (Modern Pilates). RESULTS: The volume of the dominant OT was increased by 8% (P < 0.05) with training, whereas the nondominant OT volume remained unchanged (+2%, P = 0.58). The total volume of RA increased by 21% after Pilates (P < 0.05) because of a similar increase of dominant and nondominant RA volume (21% and 20%, respectively, P < 0.05). Before Pilates, the volume of the OT was 8% greater in the nondominant compared with the dominant side (P < 0.01). This asymmetry was compensated by Pilates training (2%, P = 0.43). No side-to-side asymmetries in RA muscle volumes were observed either before (2%, P = 0.51) or after (1%, P = 0.81) Pilates. CONCLUSIONS: The present study reveals the existence of asymmetries in the muscles of the abdominal wall in nonactive healthy women. Pilates practice twice a week for 9 months elicits hypertrophy of the abdominal wall muscles, particularly of the RA, and eliminates preexisting asymmetries of the OT. Modern Pilates can be recommended as an effective method to reinforce the muscles of the abdominal wall and to compensate preexisting asymmetric developments.
URI: http://hdl.handle.net/10553/48344
ISSN: 0195-9131
DOI: 10.1249/MSS.0b013e31824fb6ae
Source: Medicine and Science in Sports and Exercise[ISSN 0195-9131],v. 44, p. 1589-1594
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