Force-Velocity Characteristics of the Knee Extensors: An Indication of the Risk for Physical Frailty in Elderly Women

Roie, Evelien Van; Verschueren, Sabine; Boonen, Steven; Bogaerts, An; Kennis, Eva; Coudyzer, Walter; Delecluse, Christophe

doi:10.1016/j.apmr.2011.05.022

Cited by 71 publications

(68 citation statements)

References 44 publications

(56 reference statements)

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“…A third limitation is that only static strength measurements were included in our study. Previous studies already showed that dynamic strength, power and speed of movement of the knee extensors might be more important for functional performance of older adults (Van Roie et al, 2011). It should be noted however that up till now, no standardized and easy-to-use measurement is available for these dynamic strength and power evaluations.…”

Section: Discussionmentioning

confidence: 96%

“…Assisted living facilities combine independence with personalized supportive service to meet the needs of older adults in daily life activities. Individuals living in such facilities are often close to or just entering the early stages of functional limitations and are therefore an important target population for screening purposes (Van Roie et al, 2011). These early stages of functional limitations might be caused by clinically important declines in knee extension strength, which have been demonstrated to exceed declines in handgrip strength (Samuel et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…These seven items were combined with (viii) the chair rise test and (ix) the Romberg test for balance described by Guralnik and co-workers (1994). This modified version of the PPT has been used in previous research (Brown, Sinacore, Binder, & Kohrt, 2000;Van Roie et al, 2011). The score of each item ranged from 0 (the inability to complete the task) to 4 (the highest level of performance), with a total mPPT score of maximum 36 points.…”

Section: Participants and Study Designmentioning

confidence: 99%

See 2 more Smart Citations

Is knee extension strength a better predictor of functional performance than handgrip strength among older adults in three different settings?

Martien¹,

Delecluse²,

Boen³

et al. 2015

Archives of Gerontology and Geriatrics

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Participants and Study Designmentioning

confidence: 99%

See 1 more Smart Citation

Is knee extension strength a better predictor of functional performance than handgrip strength among older adults in three different settings?

Martien¹,

Delecluse²,

Boen³

et al. 2015

Archives of Gerontology and Geriatrics

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“…In this population, muscle power is a reliable measure of muscle performance [14] and a strong physiological predictor of functional limitations [14][15][16]. Thus, higher muscle power in the legs is usually related to preserved physical function [17][18].…”

Section: Introductionmentioning

confidence: 99%

Effects of high-speed power training on muscle strength and power in patients with multiple sclerosis

et al. 2016

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Abstract-This study examined the effects of a high-speed power training program in peak muscle power and maximal voluntary isometric contraction (MVIC) of knee extensors in patients with relapsing-remitting multiple sclerosis (MS). Forty patients, 20 women (age 42.8 +/-10.3 yr) and 20 men (age 44.0 +/-8.7 yr) diagnosed with relapsing-remitting MS were randomly assigned, with respect to sex, to either an exercise group or a control group. Participants from the exercise group performed 12 wk of supervised muscle power training of knee extensors. All subjects were tested for MVIC and peak muscle power at baseline and after the training intervention. A strain gauge was used to measure the MVIC, and peak muscle power was assessed with a linear encoder at five relative loads. The training-related effects were assessed using a t-test. The results showed no significant changes in the control group from baseline to postintervention evaluation. In contrast, the exercise group significantly increased MVIC (10.8%; p < 0.05) and muscle power at 40,50, 60, 70, and 80% of the MVIC by 21.8, 14.5, 17.3, 19.4,and 22.3%, respectively (p < 0.01), after the training. These findings suggest that 12 wk of high-speed power training improve both MVIC and muscle power at five different loads in patients with relapsing-remitting MS.

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“…Indeed, a large effect was found when comparing the peak angular velocity produced by 50% of 1RM and by 70% of 1RM, favoring the first condition. Supporting this assumption, Van Roie et al 23 elect maximum unloaded knee extension velocity as the best functional capacity predictor in elderly people. These authors reiterate the urgent need for knee extensors power development suggesting load conditions that allows the highest angular velocities as the best stimulus.…”

Section: Discussionmentioning

confidence: 81%

Moderate Intensity Is a Better Stimulus to Induce Quadripecs Femoris Power in Elderly Adults

Pinho

Mezêncio

Hernandez

et al. 2018

Rev Bras Med Esporte

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Introduction: The best strategy for improving knee extensor power, a major functional capacity indicator in older adults, is power training. Nonetheless, the training intensity required to induce optimal gains is yet to be found. Objective: Our purpose was to compare knee extensor peak power responses between low, moderate, and high intensity load conditions (30%, 50% and 70% of 1RM). Methods: Thirteen sedentary elderly women performed six knee extensions in each load condition, calculating knee extensor mechanical work/power output and knee extension peak angular velocity. Results: No difference in peak power was found between the high (207.0 ± 68.1 W) and moderate (206.1 ± 71.6 W) load conditions (p = 0.994), and both had higher values (p ≤0.004) than the low intensity condition (135.6 ± 56.3 W). Conclusion: Moderate load at 50% of 1RM appears to be the preferred strategy for inducing knee extensor power output because in contrast with the high intensity condition, the moderate load yielded higher angular peak velocity, which is also a functional indicator. Level of Evidence ll; Therapeutic studies -Investigating treatment results.

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Force-Velocity Characteristics of the Knee Extensors: An Indication of the Risk for Physical Frailty in Elderly Women

Cited by 71 publications

References 44 publications

Is knee extension strength a better predictor of functional performance than handgrip strength among older adults in three different settings?

Is knee extension strength a better predictor of functional performance than handgrip strength among older adults in three different settings?

Effects of high-speed power training on muscle strength and power in patients with multiple sclerosis

Moderate Intensity Is a Better Stimulus to Induce Quadripecs Femoris Power in Elderly Adults

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