A static dynamometer measuring simultaneous torques exerted at the upper limb

Boissy, Patrick; Bourbonnais, Daniel; Gravel, Denis; Arsenault, André; LeBlanc, Michele

doi:10.1109/86.712229

Cited by 16 publications

(9 citation statements)

References 17 publications

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“…This dynamometer was built in our laboratory and has already been described elsewhere. 37 The force values were digitized from the output of the strain gauge ampli ers using a desktop computer and an acquisition card. The subjects were seated on a xed wheelchair and stabilized with straps at the trunk.…”

Section: Methodsmentioning

confidence: 99%

Rlative shoulder fexor and handgrip strength is related to upper limb function after stroke

Mercier¹,

Bourbonnais

2004

Clin Rehabil

113

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Section: Methodsmentioning

confidence: 99%

Rlative shoulder fexor and handgrip strength is related to upper limb function after stroke

Mercier¹,

Bourbonnais

2004

Clin Rehabil

113

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“…Such disorders have huge socio-economical consequences. Dynamometry is widely used to rehabilitate patients with musculoskeletal disorders or strengthen athletes and provides quantitative measurements of their performance (Boissy et al, 1998;Bourbonnais et al, 1993). Upper extremities rehabilitation is generally performed by means of active or passive movement of the glenohumeral joint, e.g.…”

Section: Introductionmentioning

confidence: 99%

Dynamic shoulder dynamometry: a way to develop delay onset muscle soreness in shoulder muscles

Madeleine

Nie

Arendt-Nielsen

2006

Journal of Biomechanics

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“…Boissy et al used a custom apparatus to measure torques due to involuntary associated movements in the more-affected upper limb during voluntary grasp in the opposite hand. 5,6 In severely impaired subjects, there was abnormally increased shoulder flexion, internal rotation, and elbow flexion torque in the more-affected limb. Increased EMG amplitude in several muscles was consistent with these abnormal torques.…”

mentioning

confidence: 97%

Evidence for strength imbalances as a significant contributor to abnormal synergies in hemiparetic subjects

2002

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Abnormal synergies in the paretic shoulder and elbow of hemiparetic subjects were quantified during maximal voluntary contractions (MVCs) in 27 subjects with a history of stroke and 8 age-matched control subjects. A six-axis load cell allowed simultaneous measurement of the primary torque the subject was attempting to maximize and the secondary torques at other joint actions. For example, during MVC of shoulder flexion, shoulder flexion is the primary torque and the secondary torques are internal/external rotation, abduction/adduction, and elbow flexion/extension. In general, the stroke subjects had increased secondary torques compared to controls, resulting in abnormal joint torque coupling within the set consisting of elbow flexion, internal rotation, adduction, shoulder flexion. Unlike previous studies, abnormal secondary torques in several cases were due to strength imbalances, which occur when the strength deficit for a particular joint action is greater than the strength deficit in the opposite joint action. This hypothesis was supported by electromyographic recordings and by the finding that subjects with larger strength imbalances tended to produce larger secondary torques. Possible mechanisms and consequences for rehabilitative treatments are discussed.

show abstract

A static dynamometer measuring simultaneous torques exerted at the upper limb

Cited by 16 publications

References 17 publications

Rlative shoulder fexor and handgrip strength is related to upper limb function after stroke

Rlative shoulder fexor and handgrip strength is related to upper limb function after stroke

Dynamic shoulder dynamometry: a way to develop delay onset muscle soreness in shoulder muscles

Evidence for strength imbalances as a significant contributor to abnormal synergies in hemiparetic subjects

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