Article

OBJECTIVE: To explore the use of an activity monitor (AM) to objectively
characterize free-living physical activity (F-LPA) in children with mobility
impairment resulting from cerebral palsy (CP). DESIGN: First, a validation study
compared outcomes from the AM with video evidence. Second, multiday F-LPA was
characterized. Relationships between laboratory measures and F-LPA were explored.
SETTING: The evaluation study was conducted in a laboratory environment. F-LPA
monitoring was conducted in the participants' free-living environment.
PARTICIPANTS: Convenience sample of ambulatory children (N=15; 11 boys, 4 girls)
aged 5 to 17 years with CP undergoing gait analysis. INTERVENTIONS: Not
applicable. MAIN OUTCOME MEASURES: Accuracy of the AM for sitting/lying time,
upright time, stepping time, and strides taken. Daily volumes of F-LPA of
children with CP. RESULTS: AM outcomes in comparison with video-based analysis
were (mean +/- SD) 97.4%+/-2.7%, 101.1%+/-1.5%, 99.5%+/-6.6%, 105.6%+/-15.8%, and
103.8%+/-10.1% for sitting/lying time, upright time, standing time, stepping
time, and stride count, respectively. Participants' daily F-LPA demonstrated
considerable variation: mean standing time +/- SD, 2.33+/-.96h/d; mean stepping
time +/- SD, 1.68+/-.86h/d; mean steps per day +/- SD, 8477+/-4528; and mean
sit-to-stand transitions per day +/- SD, 76+/-49. Laboratory-measured cadence and
mobility level were related to F-LPA, but not directly. CONCLUSIONS: The AM
demonstrated excellent ability to determine sitting/lying and upright times in
children with CP. Stepping time and stride count had lower levels of agreement
with video-based analysis but were comparable to findings in previous studies.
Crouch gait and toe walking had an adverse effect on outcomes. The F-LPA data
provided additional information on children's performance not related to
laboratory measures, demonstrating the added value of using this objective
measurement technique.
CI - Copyright (c) 2013 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS