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Arch Phys Med Rehabil. 2012 Dec;93(12):2333-9. doi: 10.1016/j.apmr.2012.06.005. Epub 2012 Jun 18.

Six-minute walk test in children with cerebral palsy gross motor function classification system levels I and II: reproducibility, validity, and training effects.

Author information

1
EA 3300, Adaptations Physiologiques à l'Exercice et Réadaptation à l'Effort, Université de Picardie Jules Verne, Amiens, France.

Abstract

OBJECTIVES:

To assess the reproducibility and validity of the 6-minute walk test (6MWT) with gas collection, and to evaluate effectiveness of a walking program in children with cerebral palsy (CP).

DESIGN:

Assessment and controlled training study.

SETTING:

Rehabilitation service.

PARTICIPANTS:

Children/adolescents with CP (N=24; 12 boys, 12 girls; mean age, 14.2±2.0 y, Gross Motor Function Classification System levels I and II).

INTERVENTION:

After a cycle-ergometer stress test and the 6MWT, subjects were assigned to training (n=12, 40 min of moderate walking exercise 3 times per week for 8 wk) or a matched control group (n=12).

MAIN OUTCOME MEASURES:

Peak oxygen consumption (VO(2)peak), peak ventilation, peak heart rate, and 6MWT distance.

RESULTS:

Test-retest correlations for the 6MWT were good (VO(2)peak: r=.90, P<.001, intraclass correlation coefficient [ICC]=.85; peak ventilation: r=.88, P<.001, ICC=.83; peak heart rate: r=.86, P<.001, ICC=.82; distance walked: r=.87, P=.007, ICC=.80). Mean scores for the 6MWT also closely matched corresponding cycle-ergometer data. Significant improvements in 6MWT VO(2)peak, peak ventilation, and peak heart rate were found after 8 weeks of training (P<.05).

CONCLUSIONS:

The 6MWT appears reproducible and valid relative to cycle-ergometer assessments of cardiorespiratory responses, and offers a simple method of clinical assessment. An 8-week moderate walking program improves the cardiopulmonary fitness of children with CP, as measured by 6MWT.

PMID:
22721868
DOI:
10.1016/j.apmr.2012.06.005
[Indexed for MEDLINE]

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