Intramuscular pressure in the ECRB muscle of patients with lateral epicondylitis

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Fältnamn	Indikatorer	Metadata
000		03345nam a2200397 4500
001		oai:DiVA.org:oru-10891
003		SwePub
008		100602\| \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-108912 URI
040		a (SwePub)oru
041		a engb eng
042		9 SwePub
072	7	a pop2 swepub-contenttype
072	7	a ovr2 swepub-publicationtype
100	1	a Oskarsson, Eva,d 1959-u Örebro universitet,Hälsoakademin,Research in musculoskeletal health and disease4 aut0 (Swepub:oru)eon
245	1 0	a Intramuscular pressure in the ECRB muscle of patients with lateral epicondylitis
338		a print2 rdacarrier
520		a An increased tension and a low intramuscular blood flow in the extensor carpi radialis (ECRB) muscle in patient with lateral epichondylitis has been suggested to contribute to the symptoms. The reason for the lower blood flow may be increased intramuscular pressure. The purpose of this pilot study was to determine intramuscular pressure and blood flow in affected and unaffected ECRB in ten patients with unilateral epicondylitis, with a mean duration of symptoms of 24 (13-48) months. Intramuscular pressure (IMP) was measured using the microcapillary infusion technique and intramuscular blood flow using the laser Doppler flowmetry technique, bilaterally with the non-affected arm serving as a control. The recordings were performed at rest, during isometric dorsal extension of the wrist for 1 min at 40 % and 2 min at 20 % of maximal voluntary contraction (MVC) and during recovery after contractions. At rest the median IMP was 7-8 mm Hg regardless of arm while the median intramuscular blood flow was lower on the affected side compared with the unaffected side (P=0.03). During contraction the IMP and blood flow increased regardless of arm. The IMP fell to pre-contraction level within 2 s after contraction, independent of arm and contraction force. Recovery, regarding the intramuscular blood flow, tended to be faster on the unaffected side than on the affected after contraction at 20 % MVC. After contraction at 40 % MVC the blood flow was equal on both sides. When the IMP value in the unaffected muscle was corrected for the higher force elicited compared to affected muscle the adjusted IMP was significantly lower (P=0.006) at 20 % MVC. In summary, affected ECRB has a lower intramuscular blood flow during rest and a higher intramuscular pressure in relation to the unaffected muscle at contraction for 2 min at 20 % MVC.
650	7	a MEDICIN OCH HÄLSOVETENSKAPx Medicinska och farmaceutiska grundvetenskaperx Fysiologi0 (SwePub)301062 hsv//swe
650	7	a MEDICAL AND HEALTH SCIENCESx Basic Medicinex Physiology0 (SwePub)301062 hsv//eng
653		a Tennis elbow
653		a intramuscular pressure
653		a muscle perfusion
653		a laser Doppler flowmetry
653		a static contraction
653		a Physiology
653		a Fysiologi
653		a Idrottsvetenskap
653		a Sports Science
700	1	a Piehl Aulin, Karin4 aut
700	1	a Hurtig Wennlöf, Anita4 aut
700	1	a Bucher, Sara4 aut
700	1	a Söderlund, Karin4 aut
700	1	a Pettersson, Kurt4 aut
710	2	a Örebro universitetb Hälsoakademin4 org
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-10891

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Av författaren/redakt...: Oskarsson, Eva, ...; Piehl Aulin, Kar ...; Hurtig Wennlöf, ...; Bucher, Sara; Söderlund, Karin; Pettersson, Kurt

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Av lärosätet: Örebro universitet

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