Isokinetic testing of biceps strength and endurance in dominant versus nondominant upper extremities

Wittstein, Jocelyn; Queen, Robin M.; Abbey, Alicia N.; Moorman, Claude T.

doi:10.1016/j.jse.2010.01.018

Cited by 37 publications

(23 citation statements)

References 4 publications

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“…Wittstein et al . [7] has demonstrated that the dominant and nondominant upper extremity have equivalent peak torque for both flexion and forearm supination. The normal contralateral arm can therefore be used as a control for isokinetic evaluation of biceps function, without adjusting results for hand dominance.…”

Section: Methodsmentioning

confidence: 99%

Long-term functional results and isokinetic strength evaluation after arthroscopic tenotomy of the long head of biceps tendon

Brutty

Wang²,

Campbell

et al. 2014

Int J Shoulder Surg

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Introduction:The objective of this study is to evaluate the biomechanical function of the upper arm after arthroscopic long head of biceps (LHB) tenotomy at long-term follow-up.Materials and Methods:Twenty-five male subjects ranging from 30 to 63 years old were evaluated at a mean follow-up of 7.0 years after tenotomy. Bilateral isokinetic testing was performed to obtain peak torque values, as well as total work done throughout the full range of elbow flexion and supination.Results:Magnetic resonance imaging scans revealed nine unrecognized LHB ruptures in the contralateral arm, leaving 16 subjects to complete the testing protocol. The mean quickDASH score was 8.1 (standard error [SE] 2.5). The mean oxford elbow score was 97.9 (SE 1.6). The tenotomy arm recorded a decrease in peak flexion torque of 7.0% (confidence interval [CI] 1.2-12.8), and a decrease in the peak supination torque of 9.1% (CI 1.8-16.4) relative to the contralateral arm. The total work carried out through the full range of joint motion was reduced in elbow flexion by 5.1% (CI −1.3-11.4) and in forearm supination by 5.7% (CI-2.4-13.9).Discussion:Maximum strength in elbow flexion and forearm supination is significantly reduced compared with the contralateral arm. However, this impairment is partially compensated for by relatively greater strength sustained through the latter stages of joint motion. This results in comparable total work measurements between the tenotomised and contralateral side, potentially accounting for ongoing high levels of patient satisfaction and clinical function in the long term after LHB tenotomy.Level of Evidence IV:Case series without comparison group.

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Section: Methodsmentioning

confidence: 99%

Long-term functional results and isokinetic strength evaluation after arthroscopic tenotomy of the long head of biceps tendon

Brutty

Wang²,

Campbell

et al. 2014

Int J Shoulder Surg

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“…Further, although we aimed to test the dominant arm in all subjects, two PwMS performed the tests with their non-dominant hand. This is not thought to importantly influence the fatigability results, since previous reports already stated that there was no difference in fatigability between the dominant and non-dominant hands in PwMS [ 15 ] and in the elbow in healthy subjects [ 43 , 44 ]. We only did a short movement trial of fifteen minutes.…”

Section: Discussionmentioning

confidence: 99%

Investigation of Fatigability during Repetitive Robot-Mediated Arm Training in People with Multiple Sclerosis

Severijns

Octavia

Kerkhofs³

et al. 2015

PLoS ONE

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BackgroundPeople with multiple sclerosis (MS) are encouraged to engage in exercise programs but an increased experience of fatigue may impede sustained participation in training sessions. A high number of movements is, however, needed for obtaining optimal improvements after rehabilitation.MethodsThis cross-sectional study investigated whether people with MS show abnormal fatigability during a robot-mediated upper limb movement trial. Sixteen people with MS and sixteen healthy controls performed five times three minutes of repetitive shoulder anteflexion movements. Movement performance, maximal strength, subjective upper limb fatigue and surface electromyography (median frequency and root mean square of the amplitude of the electromyography (EMG) signal of the anterior deltoid) were recorded during or in-between these exercises. After fifteen minutes of rest, one extra movement bout was performed to investigate how rest influences performance.ResultsA fifteen minutes upper limb movement protocol increased the perceived upper limb fatigue and induced muscle fatigue, given a decline in maximal anteflexion strength and changes of both the amplitude and the median frequency of EMG the anterior deltoid. In contrast, performance during the 3 minutes of anteflexion movements did not decline. There was no relation between changes in subjective fatigue and the changes in the amplitude and the median frequency of the anterior deltoid muscle, however, there was a correlation between the changes in subjective fatigue and changes in strength in people with MS. People with MS with upper limb weakness report more fatigue due to the repetitive movements, than people with MS with normal upper limb strength, who are comparable to healthy controls. The weak group could, however, keep up performance during the 15 minutes of repetitive movements.Discussion and ConclusionAlbeit a protocol of repetitive shoulder anteflexion movements did not elicit a performance decline, fatigue feelings clearly increased in both healthy controls and people with MS, with the largest increase in people with MS with upper limb weakness. Objective fatigability was present in both groups with a decline in the muscle strength and increase of muscle fatigue, shown by changes in the EMG parameters. However, although weak people with multiple sclerosis experienced more fatigue, the objective signs of fatigability were less obvious in weak people with MS, perhaps because this subgroup has central limiting factors, which influence performance from the start of the movements.

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“…There was no appreciable alteration of the data when standardized for arm dominance, using a conversion factor of À8%. 23 The strength data are outlined in Table IV and Supplementary Online Table. More than half of the patients reported subjective weakness of the arm compared with before their injury. The rate was similar in each group (Table II).…”

Section: Resultsmentioning

confidence: 99%

Endobutton versus transosseous suture repair of distal biceps rupture using the two-incision technique: a comparison series

Recordon

Misur

Isaksson

et al. 2015

Journal of Shoulder and Elbow Surgery

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Isokinetic testing of biceps strength and endurance in dominant versus nondominant upper extremities

Cited by 37 publications

References 4 publications

Long-term functional results and isokinetic strength evaluation after arthroscopic tenotomy of the long head of biceps tendon

Long-term functional results and isokinetic strength evaluation after arthroscopic tenotomy of the long head of biceps tendon

Investigation of Fatigability during Repetitive Robot-Mediated Arm Training in People with Multiple Sclerosis

Endobutton versus transosseous suture repair of distal biceps rupture using the two-incision technique: a comparison series

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