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Muscle oxygenation and glycolysis in females with trapezius myalgia during stress and repetitive work using microdialysis and NIRS.
Eur J Appl Physiol. 2010 Mar; 108(4):657-69.EJ

Abstract

The aim of this investigation was to study female workers active in the labour market for differences between those with trapezius myalgia (MYA) and without (CON) during repetitive pegboard (PEG) and stress (STR) tasks regarding (1) relative muscle load, (2) trapezius muscle blood flow, (3) metabolite accumulation, (4) oxygenation, and (5) pain development. Among 812 female employees (age 30-60 years) at 7 companies with high prevalence of neck/shoulder complaints, clinical examination identified 43 MYA and 19 CON. At rest, during PEG, and STR the trapezius muscle was measured using (1) EMG and MMG, (2) microdialysis, and (3) NIRS. Further, subjective pain ratings were scored (VAS). EMGrms in %MVE (Maximal Voluntary EMG-activity), was significantly higher among MYA than CON during PEG (11.74 +/- 9.09 vs. 7.42 +/- 5.56%MVE) and STR (5.47 +/- 5.00 vs. 3.28 +/- 1.94%MVE). MANOVA showed a group and time effect regarding data from the microdialysis: for MYA versus CON group differences demonstrated lower muscle blood flow and higher lactate and pyruvate concentrations. Potassium and glucose only showed time effects. NIRS showed similar initial decreases in oxygenation with PEG in both groups, but only in CON a significant increase back to baseline during PEG. VAS score at rest was highest among MYA and increased during PEG, but not for CON. The results showed significant differences between CON and MYA regarding muscle metabolism at rest and with PEG and STR. Higher relative muscle load during PEG and STR, insufficient muscle blood flow and oxygenation may account for the higher lactate, pyruvate and pain responses among MYA versus CON.

Authors+Show Affiliations

Institute of Sport Sciences and Clinical Biomechanics, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark. GSjogaard@health.sdu.dkNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Controlled Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19894061

Citation

Sjøgaard, Gisela, et al. "Muscle Oxygenation and Glycolysis in Females With Trapezius Myalgia During Stress and Repetitive Work Using Microdialysis and NIRS." European Journal of Applied Physiology, vol. 108, no. 4, 2010, pp. 657-69.
Sjøgaard G, Rosendal L, Kristiansen J, et al. Muscle oxygenation and glycolysis in females with trapezius myalgia during stress and repetitive work using microdialysis and NIRS. Eur J Appl Physiol. 2010;108(4):657-69.
Sjøgaard, G., Rosendal, L., Kristiansen, J., Blangsted, A. K., Skotte, J., Larsson, B., Gerdle, B., Saltin, B., & Søgaard, K. (2010). Muscle oxygenation and glycolysis in females with trapezius myalgia during stress and repetitive work using microdialysis and NIRS. European Journal of Applied Physiology, 108(4), 657-69. https://doi.org/10.1007/s00421-009-1268-2
Sjøgaard G, et al. Muscle Oxygenation and Glycolysis in Females With Trapezius Myalgia During Stress and Repetitive Work Using Microdialysis and NIRS. Eur J Appl Physiol. 2010;108(4):657-69. PubMed PMID: 19894061.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Muscle oxygenation and glycolysis in females with trapezius myalgia during stress and repetitive work using microdialysis and NIRS. AU - Sjøgaard,Gisela, AU - Rosendal,Lars, AU - Kristiansen,Jesper, AU - Blangsted,Anne K, AU - Skotte,Jørgen, AU - Larsson,Britt, AU - Gerdle,Björn, AU - Saltin,Bengt, AU - Søgaard,Karen, Y1 - 2009/11/06/ PY - 2009/10/19/accepted PY - 2009/11/7/entrez PY - 2009/11/7/pubmed PY - 2010/4/28/medline SP - 657 EP - 69 JF - European journal of applied physiology JO - Eur J Appl Physiol VL - 108 IS - 4 N2 - The aim of this investigation was to study female workers active in the labour market for differences between those with trapezius myalgia (MYA) and without (CON) during repetitive pegboard (PEG) and stress (STR) tasks regarding (1) relative muscle load, (2) trapezius muscle blood flow, (3) metabolite accumulation, (4) oxygenation, and (5) pain development. Among 812 female employees (age 30-60 years) at 7 companies with high prevalence of neck/shoulder complaints, clinical examination identified 43 MYA and 19 CON. At rest, during PEG, and STR the trapezius muscle was measured using (1) EMG and MMG, (2) microdialysis, and (3) NIRS. Further, subjective pain ratings were scored (VAS). EMGrms in %MVE (Maximal Voluntary EMG-activity), was significantly higher among MYA than CON during PEG (11.74 +/- 9.09 vs. 7.42 +/- 5.56%MVE) and STR (5.47 +/- 5.00 vs. 3.28 +/- 1.94%MVE). MANOVA showed a group and time effect regarding data from the microdialysis: for MYA versus CON group differences demonstrated lower muscle blood flow and higher lactate and pyruvate concentrations. Potassium and glucose only showed time effects. NIRS showed similar initial decreases in oxygenation with PEG in both groups, but only in CON a significant increase back to baseline during PEG. VAS score at rest was highest among MYA and increased during PEG, but not for CON. The results showed significant differences between CON and MYA regarding muscle metabolism at rest and with PEG and STR. Higher relative muscle load during PEG and STR, insufficient muscle blood flow and oxygenation may account for the higher lactate, pyruvate and pain responses among MYA versus CON. SN - 1439-6327 UR - https://www.unboundmedicine.com/medline/citation/19894061/Muscle_oxygenation_and_glycolysis_in_females_with_trapezius_myalgia_during_stress_and_repetitive_work_using_microdialysis_and_NIRS_ L2 - https://dx.doi.org/10.1007/s00421-009-1268-2 DB - PRIME DP - Unbound Medicine ER -