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Arch Phys Med Rehabil. 2011 Oct;92(10):1652-8. doi: 10.1016/j.apmr.2011.05.001. Epub 2011 Aug 27.

Development and validation of a movement and activity in physical space score as a functional outcome measure.

Author information

  • 1Healthy Lifestyles Research Center, Arizona State University, Mesa, AZ, USA. sherrmann@kumc.edu

Abstract

OBJECTIVE:

To develop and validate a functional measure, the Movement and Activity in Physical Space (MAPS) score, that encompasses both physical activity and environmental interaction.

DESIGN:

Observational matched-pair cohort with 2-month follow-up.

SETTING:

General community under free-living conditions.

PARTICIPANTS:

Adult participants (N=18; n=9 postsurgical, n=9 matched control; mean age ± SD, 28.9 ± 12.0y) were monitored by an accelerometer and global positioning system receiver for 3 days within 1 week (4.1 ± 2.8d) after knee surgery (T=0) and 2 months later (T+2). The healthy controls were matched for age, sex, smoking, perceived physical activity level, and occupation of a postsurgical participant. Correlation, t test (with Bonferroni adjustment: α=.05/2), analysis of variance, and intraclass correlation coefficient were used to establish validity and reliability evidence.

INTERVENTIONS:

Not applicable.

MAIN OUTCOME MEASURE:

MAPS scores.

RESULTS:

MAPS scores were moderately correlated with the Knee Injury and Osteoarthritis Outcome Score (P<.05). There was a significant group difference at T = 0 for MAPS (t(9.9)=-3.60; P=.01). Analysis of variance results for the MAPS indicated a time and group interaction (F(1,12)=4.60, P=.05). Reliability of 3 days of MAPS scores ranged from 0.75 to 0.81 (postsurgical and control), and 2-month test-retest reliability in the control group was 0.94.

CONCLUSIONS:

The results provide a foundation of convergent and known-group difference validity evidence along with reliability evidence for the use of MAPS as a functional outcome measure.

Copyright © 2011 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

PMID:
21872844
[PubMed - indexed for MEDLINE]
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