Intracompartmental Forearm Pressure during Rest and Exercise

Rydholm, Urban; Werner, Carl-Olof; Ohlin, Per

doi:10.1097/00003086-198305000-00034

Cited by 44 publications

(26 citation statements)

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“…forearm muscles (38). Furthermore, we found IMP in the supraspinatus muscle to be high (>50 mm Hg) in all positions with abducted arms (>30") (23).…”

mentioning

confidence: 75%

Intramuscular pressure and electromyography in four shoulder muscles

Järvholm

Palmerud

Karlsson

et al. 1991

Journal Orthopaedic Research

113

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Estimations of shoulder muscle load are important in biomechanic and ergonomic research. We have studied shoulder muscle load in the trapezius (six subjects), deltoid (six subjects), infraspinatus (eight subjects), and supraspinatus (seven subjects) muscles with simultaneous intramuscular pressure (IMP) and intramuscular bipolar electromyography (EMG) recordings. For imposition of shoulder muscle load, the arm was positioned in abduction or flexion with different hand loads (0, 1, or 2 kg), or isometric force registrations were performed. The microcapillary infusion technique was used for IMP recordings. The IMP in the supra- and infraspinatus muscles were high compared with the trapezius and deltoid muscles in abducted arm positions. In all test situations, IMP and EMG gave a similar description of local muscle load. IMP at maximal voluntary contraction was highest in the supraspinatus and infraspinatus muscles. Both IMP and EMG in all four muscles showed an almost linear correlation to recorded isometric external force. The difference in IMP between shoulder muscles in the same arm position may be due to muscle anatomy, muscle function, and compliance of surrounding tissues. Because a high IMP may impede muscle blood flow, our findings may possibly explain the physiological stress on the rotator cuff muscles as compared with the deltoid and trapezius muscles in work with elevated arms.

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“…forearm muscles (38). Furthermore, we found IMP in the supraspinatus muscle to be high (>50 mm Hg) in all positions with abducted arms (>30") (23).…”

mentioning

confidence: 75%

Intramuscular pressure and electromyography in four shoulder muscles

Järvholm

Palmerud

Karlsson

et al. 1991

Journal Orthopaedic Research

113

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“…In chronic compartment syndromes the pressure may be increased ( Mubarak et al 1976, Rydholm et al 1983a), but Wallensten (1983) reported normal pressures at rest in lower legs. In our case the pressure was slightly increased in the affected compartment.…”

Section: Discussionmentioning

confidence: 99%

“…In healthy compartments after exercise, the intramuscular pressure normalizes instantly or within 6 minutes (Rydholm et al 1983a, Wallensten 1983, Reneman 1968. It is well known that muscles with chronic compartment syndrome require an extended time for normalization of the pressure after exercise (Reneman 1968), but different pressures and intervals have been stated to be diagnostic of the syndrome (Hargens et al 1977, Styf 1986, Rorabeck 1986).…”

Section: Discussionmentioning

confidence: 99%

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Lateral elbow pain caused by anconeus compartment syndrome A case report

Abrahamsson

Sollerman

Söderberg

et al. 1987

Acta Orthopaedica Scandinavica

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“…We add that an important factor influencing blood supply and StO 2 in skeletal muscle is intramuscular pressure (IMP) (Jensen et al 1999). The actual IMP for the isolated ECR as far as we know is not known, however, IMP in the dorsal forearm has been reported to increase up to sixfold during exercise (Rydholm et al 1983). At 70% MVC, deoxygenation thus may be due to high IMP causing a tourniquet effect shifting the balance from oxygen delivery to unavailability and consumption.…”

Section: Submaximal Contractionsmentioning

confidence: 99%

The relationship between oxygenation and myoelectric activity in the forearm and shoulder muscles of males and females

2010

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The aim was to investigate the relationship between oxygen saturation (StO(2)%) measured with near-infrared spectroscopy (NIRS) and myoelectric activity (root mean square, RMS) for the extensor carpi radialis (ECR) and trapezius muscles. In addition, gender differences were examined for submaximal (10-70% MVC) and sustained (10% MVC for 5 min) isometric contractions. Thirteen males and 15 females participated. Changes in StO(2)% (∆StO(2)%) and RMS, expressed as percentages of maximum, were calculated for each submaximal contraction. A good correlation between ∆StO(2)% and RMS was seen for the ECR (r = -0.53) and a moderate correlation seen for the trapezius muscle (r = -0.44). The ANOVA showed a significant decrease in ECR-∆StO(2)% over force with females demonstrating a tendency for larger changes than males. ECR-RMS increased over force with no impact of gender. For the trapezius, ∆StO(2)% decreased over force but was not gender dependent. Trapezius-RMS increased over force with females demonstrating a tendency for greater change than males. For the sustained contraction, ECR-StO(2)% changed over time but was not gender dependent. ECR-RMS increased over time with females showing a greater response than males. Trapezius-StO(2)% changed over time and differed between genders, i.e., males increased while females decreased. RMS increased over time similarly for both genders. In conclusion, our data show that the ECR and trapezius aerobic demands during isometric contractions are negatively correlated to electromyography (EMG) RMS. The present study also suggests some gender specificity for forearm and shoulder myoelectric activity and oxygenation for submaximal and sustained contractions.

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Intracompartmental Forearm Pressure during Rest and Exercise

Cited by 44 publications

References 0 publications

Intramuscular pressure and electromyography in four shoulder muscles

Intramuscular pressure and electromyography in four shoulder muscles

Lateral elbow pain caused by anconeus compartment syndrome A case report

The relationship between oxygenation and myoelectric activity in the forearm and shoulder muscles of males and females

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