Frontiers in neurology · 2026
Association of upper limb motor function with muscle tone changes and quality of life in the subacute phase after stroke: a prospective cohort study.
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Moskiewicz Denis, Kołodziej Małgorzata, Mikulski Michał, Sarzyńska-Długosz Iwona
Аннотация
BACKGROUND: Changes in muscle tone after stroke may influence upper limb (UL) motor recovery and quality of life (QoL), but their relationship remains unclear. This study evaluated associations between muscle tone changes, UL motor function, and QoL in patients undergoing subacute stroke rehabilitation.
METHODS: This prospective cohort study is a secondary analysis of data from a randomized controlled trial including 58 patients in the subacute phase after stroke. UL motor function was assessed using the Fugl-Meyer Assessment (FMA-UE) and Box and Blocks Test (BBT), muscle tone using myotonometry, and QoL using the EuroQol-5 Dimensions-5 Levels (EQ-5D-5L) questionnaire. Correlations between changes in these parameters were analysed.
RESULTS: Most changes in muscle tone were not significantly associated with improvements in upper limb motor function or quality of life. Only isolated, weak correlations were observed, including negative associations between changes in the total score of the Fugl-Meyer Assessment for Upper Extremity and changes in relaxation time of the flexor digitorum superficialis muscle measured using myotonometry (r = -0.32, p = 0.016) and the logarithmic decrement (elasticity) of the wrist flexor muscles (flexor carpi radialis and flexor carpi ulnaris) measured using myotonometry (r = -0.26, p = 0.046), as well as between changes in the BBT and changes in the creep parameter of the latissimus dorsi muscle measured using myotonometry (r = -0.31, p = 0.017).
CONCLUSION: UL motor recovery may occur largely independently of changes in muscle tone and is more closely associated with QoL. Rehabilitation should prioritise motor control and functional performance rather than focusing primarily on tone reduction.
METHODS: This prospective cohort study is a secondary analysis of data from a randomized controlled trial including 58 patients in the subacute phase after stroke. UL motor function was assessed using the Fugl-Meyer Assessment (FMA-UE) and Box and Blocks Test (BBT), muscle tone using myotonometry, and QoL using the EuroQol-5 Dimensions-5 Levels (EQ-5D-5L) questionnaire. Correlations between changes in these parameters were analysed.
RESULTS: Most changes in muscle tone were not significantly associated with improvements in upper limb motor function or quality of life. Only isolated, weak correlations were observed, including negative associations between changes in the total score of the Fugl-Meyer Assessment for Upper Extremity and changes in relaxation time of the flexor digitorum superficialis muscle measured using myotonometry (r = -0.32, p = 0.016) and the logarithmic decrement (elasticity) of the wrist flexor muscles (flexor carpi radialis and flexor carpi ulnaris) measured using myotonometry (r = -0.26, p = 0.046), as well as between changes in the BBT and changes in the creep parameter of the latissimus dorsi muscle measured using myotonometry (r = -0.31, p = 0.017).
CONCLUSION: UL motor recovery may occur largely independently of changes in muscle tone and is more closely associated with QoL. Rehabilitation should prioritise motor control and functional performance rather than focusing primarily on tone reduction.