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Sökning: WFRF:(Hammer Ann M. 1957 )

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1.
  • Hammer, Ann M., 1957- (författare)
  • Forced use on arm function after stroke : clinically rated and self-reported outcome and measurement during the sub-acute phase
  • 2010
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The overall aim was to evaluate the effectiveness of forced use on arm and hand recovery after stroke by applying a restraining sling on the non-affected arm and to investigate psychometric properties of selected upper limb measures.Papers I and II reported a randomised trial with 1- and 3-month follow-ups. Thirty patients 1 to 6 months after stroke were included and received regular training for 2 weeks of intervention. The forced-use group had in addition a restraining sling on the non-paretic arm. Outcome measures were the Fugl-Meyer Assessment, the Modified Ashworth scale, the 16-hole peg test, grip force, the Action Research Arm test, and the Motor Assessment Scale (Paper I), and the Motor Activity Log (MAL) (Paper II). Results in Papers I and II showed no statistical difference in change between groups. Both groups improved over time.Paper III assessed the responsiveness of the MAL and its cross-sectional and longitudinal validity. The MAL was responsive to change, with Standardised Response Means and Responsiveness Ratios larger than 1.0. Correlations between the MAL and the other measures were mostly close to 0.50.Paper IV investigated test–retest intra-rater reliability of measuring grip force with Grippit, and assessed relationships between grip forces of both hands, and between sustained and peak grip force. The paretic hand needs to score a change of 10% or 50 N to exceed the measurement error. The mean ratio between sides was 0.66, and between sustained and peak grip force, 0.80–0.84.In conclusion, this thesis provides preliminary evidence that forced use does not generate greater improvement on upper limb motor impairment, capacity, and performance of activity than regular rehabilitation. The findings indicate that the MAL is a responsive measure of daily hand use in patients with stroke. Correlations of construct validity indicated that daily hand use might need to be measured separately from body function and activity capacity. The coefficients calculated for repeatability and reproducibility were acceptable, and the Grippit instrument can be recommended.
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2.
  • Hammer, Ann M., 1957-, et al. (författare)
  • Responsiveness and validity of the Motor Activity Log in patients during the subacute phase after stroke
  • 2010
  • Ingår i: Disability and Rehabilitation. - London, United Kingdom : Informa Healthcare. - 0963-8288 .- 1464-5165. ; 32:14, s. 1184-1193
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: To investigate the responsiveness and cross-sectional and longitudinal validity of the Motor Activity Log (MAL) in the subacute phase after stroke.Method: Data were collected pre-intervention, post-intervention, and at 3-month follow-up evaluations from 30 patients with stroke participating in a randomized trial of forced use. Assessments included MAL, the Fugl-Meyer test, the 16-hole peg test, grip strength, the Action Research Arm Test, and the Motor Assessment Scale. Measurements of responsiveness were effect size, standardized response mean (SRM), and responsiveness ratio (RR). Relationships between the MAL and the other measures were determined with Spearman correlations.Results: The MAL is responsive to change, with effect size, SRM, and RR ›1.0 at the 3-month follow-up, and SRM and RR ›1.0 at post-intervention. Correlations at the separate test occasions between MAL and the other measures were mostly close to 0.50, which shows fair to moderate construct validity. Correlations between changes in MAL and in the other measures were weaker than cross-sectional relationships.Conclusions: The MAL is a responsive measure of daily hand use in patients participating in rehabilitation in the subacute phase after stroke. Correlations of construct validity indicate that daily hand use may need to be measured separately from body function and activity capacity, in line with the underlying constructs of International Classification of Functioning, Disability and Health. To strengthen our findings, they should be repeated in larger samples of patients.
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