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Reproducibility, validity and predictors of six-minute walk test in overweight and obese adolescents with intellectual disability

Sami Elmahgoub (UGent) , Annemie Van De Velde (UGent) , Wim Peersman (UGent) , Dirk Cambier (UGent) and Patrick Calders (UGent)
(2012) DISABILITY AND REHABILITATION. 34(10). p.846-851
Author
Organization
Abstract
Objectives: To assess the reproducibility and validity of the six-minute walk test (6MWT) and predictors of the six-minute walk distance (6MWD) in adolescents with overweight or obesity and intellectual disability (ID). Study design: Sixty-one adolescents with overweight or obesity and mild-to-moderate ID (intelligent quotient [IQ] 40-70; age 14-22 years) participated in this study. To test reproducibility, 39 of the participants performed the 6MWT twice with an interval of 1 week. To test validity (n = 39), peak oxygen uptake (peak VO2) was measured on a bicycle ergometer. For the predictor study (n = 61), weight, height, peak VO2 and quadriceps strength were measured, and IQ and orthopedic conditions were collected from the participants' medical records. Results: There was no significant difference between the means of the two 6MWTs (571.3 vs. 576.5 m; p = 0.452). The intraclass correlation coefficient was 0.82, indicating good reliability. The smallest real difference was 82.6 m. 6MWD correlated significantly with relative peak VO2 (beta = 0.69) indicating validity. Relative peak VO2, height, IQ, body mass index (BMI) and quadriceps strength are predictors of the 6MWD in this population. Conclusion: 6MWT is a reliable and valid test in adolescents with overweight or obesity and ID. Low IQ, overweight/obesity and low physical fitness contribute to the outcome of the 6MWT.
Keywords
MENTAL-RETARDATION, DOWN-SYNDROME, six-minute walk distance, reliability, peak oxygen consumption, Cardiorespiratory fitness, CARDIOVASCULAR FITNESS, HEALTHY-CHILDREN, EXERCISE, INDIVIDUALS, ADULTS, RELIABILITY, RESISTANCE

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Citation

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MLA
Elmahgoub, Sami, Annemie Van De Velde, Wim Peersman, et al. “Reproducibility, Validity and Predictors of Six-minute Walk Test in Overweight and Obese Adolescents with Intellectual Disability.” DISABILITY AND REHABILITATION 34.10 (2012): 846–851. Print.
APA
Elmahgoub, S., Van De Velde, A., Peersman, W., Cambier, D., & Calders, P. (2012). Reproducibility, validity and predictors of six-minute walk test in overweight and obese adolescents with intellectual disability. DISABILITY AND REHABILITATION, 34(10), 846–851.
Chicago author-date
Elmahgoub, Sami, Annemie Van De Velde, Wim Peersman, Dirk Cambier, and Patrick Calders. 2012. “Reproducibility, Validity and Predictors of Six-minute Walk Test in Overweight and Obese Adolescents with Intellectual Disability.” Disability and Rehabilitation 34 (10): 846–851.
Chicago author-date (all authors)
Elmahgoub, Sami, Annemie Van De Velde, Wim Peersman, Dirk Cambier, and Patrick Calders. 2012. “Reproducibility, Validity and Predictors of Six-minute Walk Test in Overweight and Obese Adolescents with Intellectual Disability.” Disability and Rehabilitation 34 (10): 846–851.
Vancouver
1.
Elmahgoub S, Van De Velde A, Peersman W, Cambier D, Calders P. Reproducibility, validity and predictors of six-minute walk test in overweight and obese adolescents with intellectual disability. DISABILITY AND REHABILITATION. 2012;34(10):846–51.
IEEE
[1]
S. Elmahgoub, A. Van De Velde, W. Peersman, D. Cambier, and P. Calders, “Reproducibility, validity and predictors of six-minute walk test in overweight and obese adolescents with intellectual disability,” DISABILITY AND REHABILITATION, vol. 34, no. 10, pp. 846–851, 2012.
@article{1978343,
  abstract     = {{Objectives: To assess the reproducibility and validity of the six-minute walk test (6MWT) and predictors of the six-minute walk distance (6MWD) in adolescents with overweight or obesity and intellectual disability (ID).
Study design: Sixty-one adolescents with overweight or obesity and mild-to-moderate ID (intelligent quotient [IQ] 40-70; age 14-22 years) participated in this study. To test reproducibility, 39 of the participants performed the 6MWT twice with an interval of 1 week. To test validity (n = 39), peak oxygen uptake (peak VO2) was measured on a bicycle ergometer. For the predictor study (n = 61), weight, height, peak VO2 and quadriceps strength were measured, and IQ and orthopedic conditions were collected from the participants' medical records.
Results: There was no significant difference between the means of the two 6MWTs (571.3 vs. 576.5 m; p = 0.452). The intraclass correlation coefficient was 0.82, indicating good reliability. The smallest real difference was 82.6 m. 6MWD correlated significantly with relative peak VO2 (beta = 0.69) indicating validity. Relative peak VO2, height, IQ, body mass index (BMI) and quadriceps strength are predictors of the 6MWD in this population.
Conclusion: 6MWT is a reliable and valid test in adolescents with overweight or obesity and ID. Low IQ, overweight/obesity and low physical fitness contribute to the outcome of the 6MWT.}},
  author       = {{Elmahgoub, Sami and Van De Velde, Annemie and Peersman, Wim and Cambier, Dirk and Calders, Patrick}},
  issn         = {{0963-8288}},
  journal      = {{DISABILITY AND REHABILITATION}},
  keywords     = {{MENTAL-RETARDATION,DOWN-SYNDROME,six-minute walk distance,reliability,peak oxygen consumption,Cardiorespiratory fitness,CARDIOVASCULAR FITNESS,HEALTHY-CHILDREN,EXERCISE,INDIVIDUALS,ADULTS,RELIABILITY,RESISTANCE}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{846--851}},
  title        = {{Reproducibility, validity and predictors of six-minute walk test in overweight and obese adolescents with intellectual disability}},
  url          = {{http://dx.doi.org/10.3109/09638288.2011.623757}},
  volume       = {{34}},
  year         = {{2012}},
}

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