Lower limb muscle performance during a closed chain single leg squat and a squat jump in people with leg weakness after stroke: A comparative study.
Brain Impair
; 252022 Mar.
Article
em En
| MEDLINE
| ID: mdl-38935833
ABSTRACT
OBJECTIVE:
To determine if the intention to perform an exercise at speed leads to beneficial alterations in kinematic and kinetic components of the movement in people with post-stroke hemiplegia.DESIGN:
Comparative study.SETTING:
Subacute metropolitan rehabilitation hospital.PARTICIPANTS:
Convenience sample of patients admitted as an inpatient or outpatient with a diagnosis of stroke with lower limb weakness, functional ambulation category score â¥3, and ability to walk â¥14metres.METHODS:
Participants performed a single leg squat exercise on their paretic and nonparetic legs on a leg sled under three conditions 1) self-selected speed (SS), 2) fast speed (FS), 3) jump squat (JS). Measures of displacement, flight time, peak concentric velocity, and muscle excitation (via electromyography) were compared between legs and conditions.RESULTS:
Eleven participants (age 56 ± 17 years; median time since stroke onset 3.3 [IQR 3,41] months) were tested. All participants achieved a jump during the JS, as measured by displacement and flight time respectively, on both their paretic (0.25 ± 0.16 m and 0.42 ± 0.18 s) and nonparetic (0.49 ± 0.36 m and 0.73 ± 0.28 s) legs; however it was significantly lower on the non-paretic leg (p pConclusions:
Speed affects the kinematic and kinetic components of the movement. Performing exercises ballistically may improve training outcomes for people post-stroke.
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Base de dados:
MEDLINE
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En
Ano de publicação:
2022
Tipo de documento:
Article