Assessment of lower extremity muscle power in functionally-limited elders

2007 ◽  
Vol 19 (3) ◽  
pp. 194-199 ◽  
Author(s):  
Damien Callahan ◽  
Edward Phillips ◽  
Robert Carabello ◽  
Walter R. Frontera ◽  
Roger A. Fielding
Keyword(s):  
Lower Extremity ◽  
Muscle Power ◽  
Lower Extremity Muscle

scholarly journals Lower extremity muscle power – A critical determinant of physical function in aging and multiple sclerosis

2021 ◽  
pp. 111347
Author(s):  
Rasmus A.W. Stagsted ◽  
Cintia Ramari ◽  
Anders G. Skjerbaek ◽  
Cecilie Thrue ◽  
Ulrik Dalgas ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Lower Extremity ◽  
Physical Function ◽  
Muscle Power ◽  
Critical Determinant ◽  
Lower Extremity Muscle

scholarly journals Relationship between Lower Extremity Muscle Mass, Leg Extension Strength and Muscle Power of Hemiplegic Stroke Patients

2011 ◽  
Vol 23 (2) ◽  
pp. 277-282 ◽  
Author(s):  
Toshifumi Fujita ◽  
Manabu Iwata ◽  
Michitaka Fukuda ◽  
Minoru Ikeda
Keyword(s):  
Lower Extremity ◽  
Muscle Mass ◽  
Muscle Power ◽  
Stroke Patients ◽  
Leg Extension ◽  
Lower Extremity Muscle

scholarly journals Reliability and Validity of Three Clinical Methods to Measure Lower Extremity Muscle Power

2020 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Mattie E. Pontiff ◽  
Li Li ◽  
Noelle G. Moreau
Keyword(s):  
Lower Extremity ◽  
Repeated Measures ◽  
Muscle Power ◽  
Intraclass Correlation ◽  
Force Plate ◽  
Reliability And Validity ◽  
Cross Sectional ◽  
Position Transducer ◽  
Lower Extremity Muscle ◽  
Highly Correlated

Background: Lower extremity muscle power is critical for daily activities and athletic performance in clinical populations. Objective: The purpose of this study was to determine the reliability and validity of 3 clinically feasible methods to measure lower extremity muscle power during a leg press. Methods: Ten of 26 subjects performed 2 sessions of 5 submaximal leg presses separated by 3-7 days in this repeated-measures cross-sectional design; the remaining performed 1 test session. Power was calculated independently for each method [simple video, linear position transducer, and accelerometer] and compared to the reference force plate. Test-retest reliability was evaluated using intraclass correlation coefficients (ICC). Pearson’s correlation coefficient (r), Bland-Altman plots with 95% limits of agreement (LOA), and mean bias percentages (%) were used to determine relative and absolute validity. Results: Power measures were reliable for all methods (ICC=.97-.99). All were highly correlated with the force plate (r=.96-.98). Mean bias was -0.8% (LOA: -16.57% to 14.98%) (video), -13.21% (LOA: -23.81% to -2.61%) (position transducer) compared to the force plate. Proportional bias was observed for accelerometry. Conclusion: All methods were reliable and highly correlated with the force plate. Only the video and position transducer demonstrated absolute validity. The position transducer was the most feasible method because of its simplicity and accuracy in measuring power.

scholarly journals Effects of a Supervised versus an Unsupervised Combined Balance and Strength Training Program on Balance and Muscle Power in Healthy Older Adults: A Randomized Controlled Trial

Gerontology ◽  
2015 ◽  
Vol 62 (3) ◽  
pp. 275-288 ◽  
Author(s):  
André Lacroix ◽  
Reto W. Kressig ◽  
Thomas Muehlbauer ◽  
Yves J. Gschwind ◽  
Barbara Pfenninger ◽  
...  
Keyword(s):  
Older Adults ◽  
Lower Extremity ◽  
Fall Risk ◽  
Muscle Power ◽  
Timed Up And Go ◽  
Healthy Older Adults ◽  
Chair Stand ◽  
Lower Extremity Muscle ◽  
Unsupervised Training ◽  
Romberg Test

Background: Losses in lower extremity muscle strength/power, muscle mass and deficits in static and particularly dynamic balance due to aging are associated with impaired functional performance and an increased fall risk. It has been shown that the combination of balance and strength training (BST) mitigates these age-related deficits. However, it is unresolved whether supervised versus unsupervised BST is equally effective in improving muscle power and balance in older adults. Objective: This study examined the impact of a 12-week BST program followed by 12 weeks of detraining on measures of balance and muscle power in healthy older adults enrolled in supervised (SUP) or unsupervised (UNSUP) training. Methods: Sixty-six older adults (men: 25, women: 41; age 73 ± 4 years) were randomly assigned to a SUP group (2/week supervised training, 1/week unsupervised training; n = 22), an UNSUP group (3/week unsupervised training; n = 22) or a passive control group (CON; n = 22). Static (i.e., Romberg Test) and dynamic (i.e., 10-meter walk test) steady-state, proactive (i.e., Timed Up and Go Test, Functional Reach Test), and reactive balance (e.g., Push and Release Test), as well as lower extremity muscle power (i.e., Chair Stand Test; Stair Ascent and Descent Test) were tested before and after the active training phase as well as after detraining. Results: Adherence rates to training were 92% for SUP and 97% for UNSUP. BST resulted in significant group × time interactions. Post hoc analyses showed, among others, significant training-related improvements for the Romberg Test, stride velocity, Timed Up and Go Test, and Chair Stand Test in favor of the SUP group. Following detraining, significantly enhanced performances (compared to baseline) were still present in 13 variables for the SUP group and in 10 variables for the UNSUP group. Conclusion: Twelve weeks of BST proved to be safe (no training-related injuries) and feasible (high attendance rates of >90%). Deficits of balance and lower extremity muscle power can be mitigated by BST in healthy older adults. Additionally, supervised as compared to unsupervised BST was more effective. Thus, it is recommended to counteract intrinsic fall risk factors by applying supervised BST programs for older adults.

scholarly journals Peripheral Nerve Function and Lower Extremity Muscle Power in Older Men

2014 ◽  
Vol 95 (4) ◽  
pp. 726-733 ◽  
Author(s):  
Rachel E. Ward ◽  
Paolo Caserotti ◽  
Kimberly Faulkner ◽  
Robert M. Boudreau ◽  
Sasa Zivkovic ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Peripheral Nerve ◽  
Muscle Power ◽  
Older Men ◽  
Nerve Function ◽  
Lower Extremity Muscle ◽  
Peripheral Nerve Function
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