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Clin Rehabil. 2012 Jul;26(7):664-71. doi: 10.1177/0269215511426889. Epub 2011 Nov 11.

Reliability and validity of the five-repetition sit-to-stand test for children with cerebral palsy.

Author information

1
School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taiwan.

Abstract

OBJECTIVE To investigate the psychometric properties of the five-repetition sit-to-stand test, a functional strength test, in children with spastic diplegia.

DESIGN:

Methodology study.

SETTINGS:

Hospital, laboratory or home.

PARTICIPANTS:

In total, 108 children with spastic diplegia and 62 with typical development aged from five to 12 years were tested. For test-retest reliability, 22 children with spastic diplegia were tested twice within one week.

INTERVENTIONS:

Not applicable.

MAIN MEASURES:

The five-repetition sit-to-stand test measures time needed to complete five consecutive sit-to-stand cycles as quickly as possible. The higher the rate of five-repetition sit-to-stand (repetitions per second), the more strength a person has.

RESULTS:

The intraclass correlation coefficients of intra-session reliability and test-retest reliability were 0.95 and 0.99 respectively. The minimal detectable difference was 0.06 rep/sec. The convergent validity of the five-repetition sit-to-stand test was supported by significant correlation with one-repetition maximum of the loaded sit-to-stand test, isometric muscle strength, scores of Gross Motor Function Measure, and gait function (r or rho = 0.40-0.78). For known group validity, children with typical development and children classified as Gross Motor Function Classification System level I performed higher rates of five-repetition sit-to-stand than children classified as level II, and children classified as level II performed higher rates than level III.

CONCLUSION:

The five-repetition sit-to-stand test was a reliable and valid test to measure functional muscle strength in children with spastic diplegia in clinics.

PMID:
22080526
DOI:
10.1177/0269215511426889
[Indexed for MEDLINE]

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