The relationship between isokinetic and isometric knee muscle strength and maximal step-up height after stroke: A pilot study.
(2015) In Isokinetics and Exercise Science 23(3). p.143-149- Abstract
- BACKGROUND: A novel way to evaluate muscle strength and functioning in the lower limbs is to measure how high a person could step up on a platform, the so called Maximal Step-up Test (MST). Studies of healthy persons and overweight women have shown that the maximal step-up height (MSH) is associated with both muscle strength and physical function, but no study has assessed persons after stroke. OBJECTIVE: To evaluate the relationship between isokinetic and isometric knee muscle strength and maximal step-up height after stroke. METHODS: A convenience sample of 21 ambulatory persons with stroke (13 men and eight women; mean age 63 +/- 12 years; mean time since stroke onset 26 +/- 36 months). Isokinetic concentric knee extension and knee... (More)
- BACKGROUND: A novel way to evaluate muscle strength and functioning in the lower limbs is to measure how high a person could step up on a platform, the so called Maximal Step-up Test (MST). Studies of healthy persons and overweight women have shown that the maximal step-up height (MSH) is associated with both muscle strength and physical function, but no study has assessed persons after stroke. OBJECTIVE: To evaluate the relationship between isokinetic and isometric knee muscle strength and maximal step-up height after stroke. METHODS: A convenience sample of 21 ambulatory persons with stroke (13 men and eight women; mean age 63 +/- 12 years; mean time since stroke onset 26 +/- 36 months). Isokinetic concentric knee extension and knee flexion strength at 60 degrees/s and isometric knee extension strength at 90. were measured for both lower limbs with a Biodex dynamometer. Maximal step-up height was measured using a 40 cm x 60 cm platform, which could be raised from 3 cm to 45 cm with 3 cm intervals. The relationship between knee muscle strength (normalized to body weight) and the maximal step-up height was analysed with the Pearson's correlation coefficient (r). RESULTS: There were significant but only moderate relationships between the paretic isokinetic knee extension, and flexion, strength and maximal step-up height, r = 0.49; p < 0.05, and r = 0.57; p < 0.01, respectively. CONCLUSION: These moderate relationships indicate that muscle weakness is only partially associated with maximal step-up height after stroke. The MST may therefore have limited value in the assessment of muscle strength after stroke. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7985387
- author
- Carlsson, Håkan ; Lexell, Jan LU and Brogårdh, Christina LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Stroke, knee muscle strength, maximal step-up
- in
- Isokinetics and Exercise Science
- volume
- 23
- issue
- 3
- pages
- 143 - 149
- publisher
- IOS Press
- external identifiers
-
- wos:000360393000001
- scopus:84940029538
- ISSN
- 1878-5913
- DOI
- 10.3233/IES-150574
- language
- English
- LU publication?
- yes
- id
- 8428fb55-45f9-4d28-a9a3-c8f44b7a2ba6 (old id 7985387)
- date added to LUP
- 2016-04-01 10:01:52
- date last changed
- 2022-04-27 17:57:10
@article{8428fb55-45f9-4d28-a9a3-c8f44b7a2ba6, abstract = {{BACKGROUND: A novel way to evaluate muscle strength and functioning in the lower limbs is to measure how high a person could step up on a platform, the so called Maximal Step-up Test (MST). Studies of healthy persons and overweight women have shown that the maximal step-up height (MSH) is associated with both muscle strength and physical function, but no study has assessed persons after stroke. OBJECTIVE: To evaluate the relationship between isokinetic and isometric knee muscle strength and maximal step-up height after stroke. METHODS: A convenience sample of 21 ambulatory persons with stroke (13 men and eight women; mean age 63 +/- 12 years; mean time since stroke onset 26 +/- 36 months). Isokinetic concentric knee extension and knee flexion strength at 60 degrees/s and isometric knee extension strength at 90. were measured for both lower limbs with a Biodex dynamometer. Maximal step-up height was measured using a 40 cm x 60 cm platform, which could be raised from 3 cm to 45 cm with 3 cm intervals. The relationship between knee muscle strength (normalized to body weight) and the maximal step-up height was analysed with the Pearson's correlation coefficient (r). RESULTS: There were significant but only moderate relationships between the paretic isokinetic knee extension, and flexion, strength and maximal step-up height, r = 0.49; p < 0.05, and r = 0.57; p < 0.01, respectively. CONCLUSION: These moderate relationships indicate that muscle weakness is only partially associated with maximal step-up height after stroke. The MST may therefore have limited value in the assessment of muscle strength after stroke.}}, author = {{Carlsson, Håkan and Lexell, Jan and Brogårdh, Christina}}, issn = {{1878-5913}}, keywords = {{Stroke; knee muscle strength; maximal step-up}}, language = {{eng}}, number = {{3}}, pages = {{143--149}}, publisher = {{IOS Press}}, series = {{Isokinetics and Exercise Science}}, title = {{The relationship between isokinetic and isometric knee muscle strength and maximal step-up height after stroke: A pilot study.}}, url = {{http://dx.doi.org/10.3233/IES-150574}}, doi = {{10.3233/IES-150574}}, volume = {{23}}, year = {{2015}}, }