Age-Related Differences in Knee Muscle Strength in Normal Women

Murray, M P; Duthie, Edmund H.; Gambert, Steven; Sepic, S B; Mollinger, L A

doi:10.1093/geronj/40.3.275

Cited by 180 publications

(73 citation statements)

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“…Since the mean age of the subjects both in the two OA groups and in the controls were slightly different, age dependent changes in quadriceps muscle function as described in previous studies [ 18,28,34] might contribute to our findings. However, as age dependent decline in quadriceps muscle strength has mostly been compared between young, middle-aged and elderly patients [ 18,33,341, the extent to which ageing influences the changes of quadriceps muscle function in a subgroup of elderly patients with knee OA remains elusive.…”

Section: Discussionmentioning

confidence: 63%

Strength and voluntary activation of the quadriceps femoris muscle at different severities of osteoarthritic knee joint damage

Pap

Machner

Awiszus

2004

Journal Orthopaedic Research

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Objective: Improvements of quadriceps motor deficits represent a major therapeutical target in knee osteoarthritis (OA). In the present study, we investigated changes in quadriceps function at different stages of osteoarthritic cartilage damage.A4ethod.s: Measurements of quadriceps voluntary activation (VA) and maximum voluntary contraction (MVC) were performed by a twitch interpolation technique and the total muscular capacity (TMC) was calculated as the ratio of MVC and VA. We assessed 68 patients (56.7 2 9.5 years) with stage I1 and 154 patients (65.6 k 6.0 years) with stage IV chondropathy. As controls, we used 85 age related healthy subjects (58.1 f 8.7 years).Results: While TMC was significantly lower in stage IV (90.6 f 43.7 N rn) than in stage I1 chondropathy (109.6 k 51 .O) there were no differences in the MVCs between both groups. Quadriceps VA was even higher in stage IV (77.2k 13.2%) than in stage I1 chondropathy (70.8 t 16.0'%). In the controls, MVC, VA and T M C were significantly higher than in both OA groups. Conclusion:We assume that a decrease of T M C might occur within the course of OA and, in consequence, VA increases to maintain quadriceps MVC.

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Section: Discussionmentioning

confidence: 63%

Strength and voluntary activation of the quadriceps femoris muscle at different severities of osteoarthritic knee joint damage

Pap

Machner

Awiszus

2004

Journal Orthopaedic Research

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“…With reference to the study by Ploutz-Snyder et al (29), we could not satisfactorily resolve the discordant results. However, using their cut point (3.0Nm/kg) and assuming an average body mass of 70 kg, the average cut point in absolute strength would be 210Nm, a value that exceeds the average strength reported in healthy older adults (37)(38)(39)(40)(41)(42). For this reason, the cut point by Ploutz-Snyder and associates (29) appears implausibly high and should, therefore, be interpreted cautiously.…”

Section: Discussionmentioning

confidence: 97%

Association of physical performance with muscle strength and hip range of motion in hip osteoarthritis

Pua

Wrigley

Collins

et al. 2009

Arthritis & Rheumatism

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Objective. To examine whether the associations of physical performance with isometric hip and knee extensors strength and passive hip flexion and internal rotation range of motion (ROM) are nonlinear in community-dwelling adults with hip osteoarthritis (OA). Methods. Participants were 100 adults (mean age 62 years) with radiographically confirmed hip OA. Physical performance measures included gait speed test and timed stair tests. Piecewise regression models of muscle strength and hip ROM on physical performance measures were used to identify possible breakpoints. Receiver operating characteristic (ROC) curve analysis was used to identify participants with functionally inadequate (<1.0 meters/second) gait speed and optimal cut points were identified. Results. Muscle strength and hip ROM were nonlinearly associated with stair measures but not with gait speed measures. The optimal breakpoints and ROC-derived cut points were 1.8 -2.5Nm/kg for knee extensors, 1.5-2.1Nm/kg for hip extensors, 25-26°for hip internal rotation ROM, and 109 -115°for hip flexion ROM. Muscle strength breakpoints increased monotonically with increasing movement demand. Conclusion. In individuals with hip OA, the associations between physical performance and measures of muscle strength and hip ROM are less straightforward than previously assumed. These breakpoints and ROC-derived cut points may be useful in identifying individuals for whom interventions that improve muscle strength or hip ROM would be most beneficial.

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“…However, the present results did not show group-related differences in gait parameters. Murray et al [24] reported a strong relationship between knee extension strength and gait. Sugiura and Demura [14] found an insignificant difference in knee extension strength between the elderly with mild knee pain and those with severe knee pain that also had high independence in ADL.…”

Section: Discussionmentioning

confidence: 99%

Effect of Mild and Severe Unilateral Knee Joint Pain on Gait in Elderly Females

Sugiura

Demura

2014

Journal of Geriatrics

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Gait change in the elderly may be a strategy to maintain postural stability while walking. However, gait laterality is accompanied by back pain or an increased risk of a fall. This study aimed to examine group-related differences and gait laterality in elderly females with mild or severe unilateral knee pain. Seventy-five elderly females (66-87 years old) were included, which comprised the following groups: 47 with mild unilateral knee pain and 28 with severe unilateral knee pain. They completed a 12 m walk test with maximum effort. Stance time, swing time, and step length were selected as evaluation parameters. A two-way ANOVA (group × leg) was used for analysis. No significant differences were found in interaction or in either main factor of the group and leg. In conclusion, elderly females do not show group-related differences or gait laterality regardless of the degree (mild or severe) of unilateral knee pain.

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Age-Related Differences in Knee Muscle Strength in Normal Women

Cited by 180 publications

References 0 publications

Strength and voluntary activation of the quadriceps femoris muscle at different severities of osteoarthritic knee joint damage

Strength and voluntary activation of the quadriceps femoris muscle at different severities of osteoarthritic knee joint damage

Association of physical performance with muscle strength and hip range of motion in hip osteoarthritis

Effect of Mild and Severe Unilateral Knee Joint Pain on Gait in Elderly Females

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