The effects of different training programs on the trapezius muscle of women with work-related neck and shoulder myalgia

Kadi, F.Umeå universitet,Högskolan i Halmstad,Sektionen för ekonomi och teknik (SET),Anatomi (författare)

The aim of this study was to examine the effects of training on the structural characteristics of the trapezius muscle in women with work-related trapezius myalgia. Muscle biopsies were taken before and after 10 weeks of three different training programs (strength, endurance and coordination). Enzyme-immunohistochemical analysis was performed to assess muscle fibre types, fibre area, capillary supply and cytochrome c oxidase (COX) activity. There was an increase in the proportion of type LIA fibres in strength trained group (P < 0.05). Strength training elicited a preferential increase in the area of type II fibres (P < 0.05); both strength and endurance programs induced an increase in the number of capillaries around type I and IIA muscle fibres. Finally, all training programs induced a decrease in the proportion of COX-negative fibres. In conclusion, the trapezius muscle of women with neck and shoulder myalgia is characterised by a great potential of adaptation to physical exercise over a period of 10 weeks. The significant changes in the number of capillaries and the specific changes induced by training at the level of muscle fibres might well explain the improvement of muscle function.

Ahlgren, ChristinaUmeå universitet,Institutionen för samhällsmedicin och rehabilitering,Dept. of Occup. and Environ. Med., Umeå University, 901-87 Umeå, Sweden(Swepub:umu)chah0001 (författare)
Waling, KerstinUmeå universitet,Institutionen för samhällsmedicin och rehabilitering,Dept. of Occup. and Environ. Med., Umeå University, 901-87 Umeå, Sweden(Swepub:umu)kewa0001 (författare)
Sundelin, GunneviUmeå universitet,Institutionen för samhällsmedicin och rehabilitering,Dept. of Occup. and Environ. Med., Umeå University, 901-87 Umeå, Sweden(Swepub:umu)gusu0002 (författare)
Thornell, Lars-EricUmeå universitet,Anatomi,Dept. of Integrative Medical Biology, Section for Anatomy, Umeå University, 901-87 Umeå, Sweden b Dept. of Occup. and Environ. Med., Umeå University, 901-87 Umeå, Sweden(Swepub:umu)lath0002 (författare)
Högskolan i HalmstadSektionen för ekonomi och teknik (SET) (creator_code:org_t)

Ingår i:Acta NeuropathologicaBerlin : Springer Berlin/Heidelberg100:3, s. 253-2580001-63221432-0533

Av författaren/redakt...: Kadi, F.; Ahlgren, Christi ...; Waling, Kerstin; Sundelin, Gunnev ...; Thornell, Lars-E ...

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