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SENSORY MAPPING OF THE UPPER TRAPEZIUS MUSCLE IN RELATION TO CONSECUTIVE SESSIONS OF ECCENTRIC EXERCISE: PPT mapping and repeated eccentric exercise.
MedLine Citation:
PMID:  21912299     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The aim of this study was to evaluate the changes in pressure pain sensitivity maps in untrained subjects over two subsequent sessions of eccentric exercise (ECC) expected to result in (i) delayed onset muscle soreness (DOMS) and (ii) adaptation/recovery respectively. Eleven healthy male subjects participated in this study. Pain pressure threshold (PPT), rate of perceived exertion (RPE), pain intensity, soreness area drawing, maximal voluntary contraction and shoulder range of motion were assessed in session 1 before, immediately after and 24 hours after eccentric exercise. The ECC protocol was used to induce DOMS consisted of 50 eccentric contractions of right shoulder which was divided into 5 bouts including 10 contractions at MVC level separated by 2 min resting period. Session 2 was identical to session one and performed exactly one week after. There was only a significant increase in the RPE assessed before the exercise and 24 hours after exercise in session 1 (P=0.001). The average PPT only decreased significantly from before the exercise (660.2 ± 76.2 kPa) to 24 hours after exercise (435.6 ± 59.3 kPa) in session 1 (P=0.016). The present study confirmed a heterogeneous distribution of mechanical sensitivity before and after sessions of ECC. The first session of ECC underlined increased mechanical sensitivity due to DOMS while the second session reflected an adaptation process. Our results support the potential role of ECC bouts in training regimes.
Authors:
Adam Kawczyński; Afshin Samani; César Fernández-de-Las-Peñas; Jan Chmura; Pascal Madeleine
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-09
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1Department of Athletes Motor Skills, Sport Institute, University School of Physical Education, al.I.J Paderewskiego 35, Wrocław, Poland; 2Laboratory for Ergonomics and Work-related Disorders, Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, Fredrik Bajers Vej 7 D-3, 9220 Aalborg East, Denmark; 3Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain.
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