Changes in interstitial noradrenaline, trapezius muscle activity and oxygen saturation during low-load work and recovery

Flodgren, Gerd, 1961- (författare): Högskolan i Gävle,Centrum för belastningsskadeforskning,Department of Surgical and Perioperative Sciences, Sports Medicine Unit, Umeå University, Umeå, Sweden; Institute of Health and Society, Newcastle University, Newcastle upon Tyne, United Kingdom

Crenshaw, Albert G. (författare): Högskolan i Gävle,Centrum för belastningsskadeforskning

Gref, Margareta (författare): Umeå universitet,Klinisk fysiologi,Department of Surgical and Perioperative Sciences, Clinical Physiology Unit, Umeå University, Umeå, Sweden

Fahlström, Martin (författare): Umeå universitet,Rehabiliteringsmedicin,Department of Surgical and Perioperative Sciences, Sports Medicine Unit, Umeå University, Umeå, Sweden; Department of Community Medicine and Rehabilitation, Department of Rehabilitation Medicine, Umeå University, Umeå, Sweden

(creator_code:org_t)

2009-06-06
2009
Engelska.
Ingår i: European Journal of Applied Physiology. - : Springer Science and Business Media LLC. - 1439-6319 .- 1439-6327. ; 107:1, s. 31-42

Relaterad länk:: https://urn.kb.se/re...; visa fler...; https://doi.org/10.1...; https://urn.kb.se/re...; visa färre...

Abstract Ämnesord

Stäng

Both physical as well as mental demands result in an increased activity in the sympathetic nervous system (SNS) with changes in blood-pressure and heart-rate. Through local release of catecholamines, e.g. noradrenaline (NAd) SNS exerts various actions at the muscle level. The aims of this study were to investigate the effects of low-load repetitive work alone and in combination with mental demands on local muscle interstitial noradrenaline concentration [NAd]i, muscle activity and oxygenation, assessed with microdialysis, surface electromyography, and near-infrared spectroscopy, respectively. Healthy females (n = 15) were exposed to (1) 30 min repetitive work (RW) and (2) 30 min repetitive work with superimposed mental load (RWML) on two different occasions. Muscle [NAd]i and muscle activity increased significantly in response to RW, but did not increase further during RWML. For RW, [NAd]i was found to be inversely correlated to muscle activity. Oxygenation decreased significantly during work, independently of occasion. Our findings indicate that low-load work causes significantly increased trapezius muscle [NAd]i in healthy females, and short periods of superimposed mental load do not add to this increase and further, that both muscle activity and oxygenation were unaffected by the superimposed mental load.

MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Fysiologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Physiology (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Health Sciences (hsv//eng)

Av författaren/redakt...: Flodgren, Gerd, ...; Crenshaw, Albert ...; Gref, Margareta; Fahlström, Marti ...

Om ämnet

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Hälsovetenskap; och Idrottsvetenskap

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Medicinska och f ...; och Fysiologi

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