Is quadriceps muscle strength a determinant of the physical function of the elderly?

Altubasi, Ibrahim

doi:10.1589/jpts.27.3035

Cited by 16 publications

(12 citation statements)

References 15 publications

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“…These findings vary in part from prior work, potentially due to differences in populations, how RTD is calculated, or types of performance measures. In a small study of older adults aged 65–80, (38.1% male; n = 21), Altubasi found that knee extension RTD assessed as time from onset to peak torque, rather than by 50 ms epoch, was moderately correlated with stair climbing ( r = −0.57) but not with the timed up and go, ramp up, or 4 m walk with usual pace tests . In patients affected by multiple sclerosis (26% male; n = 35), Kjolhede et al .…”

Section: Discussionmentioning

confidence: 99%

“…In a small study of older adults aged 65-80, (38.1% male; n = 21), Altubasi found that knee extension RTD assessed as time from onset to peak torque, rather than by 50 ms epoch, was moderately correlated with stair climbing (r = À0.57) but not with the timed up and go, ramp up, or 4 m walk with usual pace tests. 30 In patients affected by multiple sclerosis (26% male; n = 35), Kjolhede et al failed to demonstrate an independent effect of peak RTD adjusted for body weight on a usual pace 2 min walk after accounting for concentric, isokinetic knee extensor peak torque. 31 Why would RTD mostly affect performance on shorter rather than longer tasks?…”

Section: Discussionmentioning

confidence: 99%

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Knee extension rate of torque development and peak torque: associations with lower extremity function

Osawa

Studenski

Ferrucci

2018

J cachexia sarcopenia muscle

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BackgroundWith aging, the ability to generate muscle force decreases, contributing to declines in physical functions such as walking. While most studies assess muscle force by peak torque, the rate of torque development (RTD) reflects a dynamic component of muscle performance that is important for physical function. Using data from the Baltimore Longitudinal Study of Aging, we assessed whether RTD adds significantly to peak torque in associations with lower extremity performance. If so, RTD may help identify weak older adults for screening and intervention.MethodsWe assessed associations of RTD and peak torque with physical performance independent of demographics, BMI, body composition, and each other in 1089 Baltimore Longitudinal Study of Aging participants (49.7% women; aged 26 to 96 years; women, 64.0 ± 13.8 years; men, 68.4 ± 14.4 years). Peak torque was assessed by isometric and 30 deg/s isokinetic knee extension tests. Peak RTD was operationalized as the maximum torque‐time slope among successive 50 ms epochs over the first 3 s of a test of knee extension isometric strength, with the knee joint positioned at 120 deg of flexion. A battery of lower extremity performance tests included gait speed during a 6 m walk at usual and fast pace (6 m usual and fast), time to complete a 400 m walk at fast pace (400 m), distance covered in a 2.5 min walk at normal pace (2.5 min), time to complete 5 and 10 chair stands, and two summary tests of lower extremity performance. Sex‐stratified generalized linear regression models were adjusted for age, race, BMI, appendicular lean mass, and whole body fat mass.ResultsIn men, independent of either measure of peak torque and cofactors, RTD was a significant (P < 0.05) predictor of all lower extremity performance tests except the 400 m and 2.5 min walks. In women, independent of peak torque, RTD was only a significant independent correlate of the 6 m fast walk (P < 0.001).ConclusionsRTD independently contributes to physical functions in men but less in women. The mechanisms underlying the sex difference are unclear and require further study.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Knee extension rate of torque development and peak torque: associations with lower extremity function

Osawa

Studenski

Ferrucci

2018

J cachexia sarcopenia muscle

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“…In a previous study, impaired stair-climbing ability was associated with quadriceps weakness in elderly populations [ 39 ]. The average stair climbing speed of individuals who have undergone TKA was two times slower than that of the age-matched non-arthritic healthy population [ 28 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Early Combined Eccentric-Concentric Versus Concentric Resistance Training Following Total Knee Arthroplasty

Suh

Kim

et al. 2017

Ann Rehabil Med

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ObjectiveTo investigate the effects of early combined eccentric-concentric (ECC-CON) or concentric (CON) resistance training following total knee arthroplasty (TKA).MethodsPatients who underwent a primary TKA were randomly assigned to an ECC-CON group (n=16) or a CON group (n=18). All patients received early, progressive resistance training with five sessions per week for 2 weeks starting 2 weeks after TKA. Isometric knee flexor and extensor strength of the surgical and non-surgical knees, instrumental gait analysis for spatiotemporal parameters, 6-Minute Walk Test (6MWT), Timed Up and Go Test (TUG), Timed Stair Climbing Test (SCT) were used to evaluate performance-based physical function. The Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) and EuroQOL five dimensions (EQ-5D) questionnaire were used to evaluate self-reported physical function and self-reported quality of life. All patients underwent these evaluations before and 1 month after TKA.ResultsThe ECC-CON group showed clinically meaningful improvements in extensor peak torque (PT) of the non-surgical knee, gait speed, and 6MWT from preoperative values. The CON group had an increase in H/Q ratio of the surgical knee and improvement in SCT-ascent postoperatively. Both groups showed significant improvements in WOMAC-Pain, function, and EQ-5D scores. Although extensor PT of the surgical knee did not reach the preoperative level in either group, the postoperative change was significantly less in the ECC-CON group than the CON group.ConclusionEarly combined ECC-CON resistance training minimizes the loss in quadriceps strength of the surgical knee and improves endurance and gait speed after TKA.

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“…Düşme sıklığının azaltılması ve fonksiyonelliğin arttırılabilmesini garanti altına alabilmek için geriatrik bireylere yapılandırılmış egzersiz programları gibi gerekli tedavi stratejileri planlanmalıdır (3). Güncel literatürdeki bazı çalışmalar; yaşlılardaki fiziksel fonksiyonun izometrik ve izokinetik tork değerleri ile korrelasyonu bulunamasa da, maksimum torka ulaşma zamanı ve tork hızı gibi daha ayrıntılı analiz parametrelerinin fonksiyonellikle olan ilişkisi tanımlanmaya başlanmıştır (30).…”

Section: Gereç Ve Yöntemlerunclassified

elationship of Lower Extremity Muscle Strength with Balance and Lower Extremity Functions in Elderly Women

2018

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The purpose of this study was to determine the relationships between strength of different muscle groups of the lower extremity, balance and lower extremity functions in women over 65 years. Materials and Methods: A total of 72 voluntary women participated in the study. Falling story in the last year, age, body weight and height were recorded. Berg Functional Balance Scale, Functional Reach Test, Timed Up and Go Test, and Lower Extremity Functional Scale were evaluated. Muscle strength measurements in the lower extremity were performed with digital handheld dynamometer. The relationship between parameters in the elderly subjects was evaluated by Pearson correlation analysis. The Mann-Whitney U test was used to determine the difference between the groups. Results: Eight of the participants (11.1%) had falling stories in the last year. Berg Functional Balance Scale score was 49.7±5.6 (32-56) points, Functional Reach Test score was 23.2±5.7 (12-38) cm, Timed Up and Go Test score was 10.8±4.4 (4.2-33.3) s, and the Lower Extremity Functional Scale score was 39.6±15 (12-79) points. All of the tests were associated with lower extremity muscle strength at different levels. Analyzed test parameters correlated with age (p˂0.05). Hip extensor, knee extensor and ankle dorsiflexor muscle strength, Timed Up and Go Test and Functional Reach Test results were worse in the group with falling stories (p˂0.05). Conclusions: Functional score, mobility and balance are related to lower extremity muscle strength in elderly women. Increasing muscle strength will reduce the risk of falls and increase independence.

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Is quadriceps muscle strength a determinant of the physical function of the elderly?

Cited by 16 publications

References 15 publications

Knee extension rate of torque development and peak torque: associations with lower extremity function

Knee extension rate of torque development and peak torque: associations with lower extremity function

Effects of Early Combined Eccentric-Concentric Versus Concentric Resistance Training Following Total Knee Arthroplasty

elationship of Lower Extremity Muscle Strength with Balance and Lower Extremity Functions in Elderly Women

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