Correlation of isokinetic and novel hand-held dynamometry measures of knee flexion and extension strength testing

Whiteley, Rodney; Jacobsen, P.F.; Prior, Simon; Skazalski, Christopher; Otten, Roald; Johnson, Amanda

doi:10.1016/j.jsams.2012.01.003

Cited by 101 publications

(94 citation statements)

References 14 publications

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“…Measurements made with an isokinetic (ICC ranged from 0.83 to 0.97) 12,14,15 or handheld (ICC = 0.90) 22 dynamometer have been reported to have similar or slightly higher levels of reliability. The only previous study, to our knowledge, that examined the reliability of between-limb eccentric knee flexor strength ratios using an isokinetic dynamometer reported a lower test-retest reliability (ICC = 0.69) 12 than that reported in this study (average peak force with bilateral testing, ICC = 0.85).…”

Section: Discussionmentioning

confidence: 99%

“…Although handheld dynamometers have become a popular field-based alternative, they require operator skill and strength to collect reliable and valid data. 22 The purposes of this investigation were (1) to determine if a novel device, designed to measure eccentric knee flexor strength via the Nordic hamstring exercise (NHE), would display acceptable test-retest reliability; (2) to determine normative values for eccentric knee flexor strength derived from the device in in-T T STUDY DESIGN: Reliability and case-control injury study.…”

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confidence: 99%

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A Novel Device Using the Nordic Hamstring Exercise to Assess Eccentric Knee Flexor Strength: A Reliability and Retrospective Injury Study

Opar¹,

Piatkowski²,

Williams³

et al. 2013

Journal of Orthopaedic & Sports Physical Therapy

198

248

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Hamstring strain injury (HSI) is the most common injury type in a number of sports 4,9,17 and is notorious for its high recurrence rate. A high proportion of HSIs are thought to occur during the terminal swing phase of high-speed running, 5 when the hamstrings are required to perform a forceful eccentric contraction. 20,23 Lower eccentric knee flexor strength has been reported as a risk factor for future HSI,8,19 indicating the importance of eccentric strength for HSI avoidance. 3,18 Further, previously strained hamstrings display reduced levels of eccentric knee flexor strength compared to those in the uninjured contralateral limb, 7,13 which may partially explain why a previous HSI is the primary risk factor for future injury. 2Currently, the gold standard measure for the assessment of eccentric knee flexor strength is isokinetic dynamometry. 1 However, this technique is limited by the high cost of the device and, therefore, its lack of widespread availability. Although handheld dynamometers have become a popular field-based alternative, they require operator skill and strength to collect reliable and valid data. 22The purposes of this investigation were (1) to determine if a novel device, designed to measure eccentric knee flexor strength via the Nordic hamstring exercise (NHE), would display acceptable test-retest reliability; (2) to determine normative values for eccentric knee flexor strength derived from the device in in-T T STUDY DESIGN: Reliability and case-control injury study. T T OBJECTIVES:To determine if a novel device designed to measure eccentric knee flexor strength via the Nordic hamstring exercise displays acceptable test-retest reliability; to determine normative values for eccentric knee flexor strength derived from the device in individuals without a history of hamstring strain injury (HSI); and to determine if the device can detect weakness in elite athletes with a previous history of unilateral HSI. T T BACKGROUND: HSI and reinjury are the most common cause of lost playing time in a number of sports. Eccentric knee flexor weakness is a major modifiable risk factor for future HSI. However, at present, there is a lack of easily accessible equipment to assess eccentric knee flexor strength. T T METHODS:Thirty recreationally active males without a history of HSI completed the Nordic hamstring exercise on the device on 2 separate occasions. Intraclass correlation coefficients, typical error, typical error as a coefficient of variation, and minimal detectable change at a 95% confidence level were calculated. Normative strength data were determined using the most reliable measurement. An additional 20 elite athletes with a unilateral history of HSI within the previous 12 months performed the Nordic hamstring exercise on the device to determine if residual eccentric muscle weakness existed in the previously injured limb. T T RESULTS:The device displayed high to moderate reliability (intraclass correlation coefficient = 0.83-0.90; typical error, 21.7-27.5 N; typical error as a coefficient of varia...

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

A Novel Device Using the Nordic Hamstring Exercise to Assess Eccentric Knee Flexor Strength: A Reliability and Retrospective Injury Study

Opar¹,

Piatkowski²,

Williams³

et al. 2013

Journal of Orthopaedic & Sports Physical Therapy

198

248

View full text Add to dashboard Cite

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“…It is a useful tool for ranking muscle strength of older people in epidemiological studies. It may also be of value for quick and objective assessment of physical function in the clinical setting (39,40).…”

Section: Study Limitationsmentioning

confidence: 99%

Effects of an Exercise Intervention in Frail Older Patients with Chronic Obstructive Pulmonary Disease Hospitalized due to an Exacerbation: A Randomized Controlled Trial

Torres‐Sánchez

Valenza

Cabrera‐Martos

et al. 2016

COPD: Journal of Chronic Obstructive Pulmonary Disease

107

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The objective of this study was to determine whether an exercise intervention using a pedal exerciser is able to reduce disability in frail older patients with chronic obstructive pulmonary disease (COPD) during hospitalization due to an acute exacerbation. This study was a randomized, single-blind clinical trial. Fifty-eight frail older patients admitted to hospital due to an acute exacerbation of COPD (AECOPD) were included in this study. All patients received standard medical and pharmacological care. Patients assigned to the intervention group also received an exercise intervention. The main outcome measures were balance, muscle strength, and exercise capacity. Significant between-group differences were found in muscle strength (p = 0.028) and balance (p = 0.013) after the intervention. All the variables improved significantly (p < 0.05) in the exercise intervention group. In the intervention group, the mean difference in muscle strength between baseline and discharge was 10.47 N. Balance also improved, showing a mean difference of 7.56 seconds on the right leg and 6.57 seconds on the left leg. Exercise capacity improved as well, with a difference of 4.97 stands between baseline and discharge. All the variables showed impairment in the control group. In conclusion, an exercise intervention using a pedal exerciser during the hospital stay of frail elderly patients with an AECOPD improves muscle strength, balance, and exercise capacity.

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“…Our method replicated the approach of %")! Whiteley et al [56] in testing each leg individually in a given order. Since we first tested the %"*!…”

Section: %+'!mentioning

confidence: 99%

Motor imagery during action observation increases eccentric hamstring force: an acute non-physical intervention

Scott

Taylor

Chesterton

et al. 2017

Disability and Rehabilitation

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Correlation of isokinetic and novel hand-held dynamometry measures of knee flexion and extension strength testing

Cited by 101 publications

References 14 publications

A Novel Device Using the Nordic Hamstring Exercise to Assess Eccentric Knee Flexor Strength: A Reliability and Retrospective Injury Study

A Novel Device Using the Nordic Hamstring Exercise to Assess Eccentric Knee Flexor Strength: A Reliability and Retrospective Injury Study

Effects of an Exercise Intervention in Frail Older Patients with Chronic Obstructive Pulmonary Disease Hospitalized due to an Exacerbation: A Randomized Controlled Trial

Motor imagery during action observation increases eccentric hamstring force: an acute non-physical intervention

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