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Effect of physical training on pain sensitivity and trapezius muscle morphology
Author(s) -
Nielsen Pernille Kofoed,
Andersen Lars L.,
Olsen Henrik B.,
Rosendal Lars,
Sjøgaard Gisela,
Søgaard Karen
Publication year - 2010
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.21577
Subject(s) - myalgia , medicine , physical therapy , randomized controlled trial , physical medicine and rehabilitation , trapezius muscle , muscle fatigue , electromyography
The objective of this study was to investigate morphological and physiological characteristics of painful muscles in women with (MYA, n = 42) and without (CON, n = 20) trapezius myalgia, and assess changes in response to a 10‐week, randomized, controlled trial. MYA accomplished: (1) specific strength training (SST); (2) general fitness training (GFT); or (3) reference intervention (REF). Differences in muscle morphology could not be detected by ultrasound imaging. Significantly lower pressure pain threshold (PPT) and shoulder torque were observed for MYA, indicating pain‐related lack of full activation. After 10 weeks, increased shoulder torque and PPT of the painful trapezius were observed in SST solely. The PPT of a pain‐free reference muscle was increased in response to both SST and GFT, indicating a general effect of physical activity on pain perception. This study shows clinically relevant improvement in pain sensitivity and muscle strength capacity in response to SST. Muscle Nerve, 2010