Journal of Intellectual Disability Research

Volume 62, Issue 8 pp. 719-729

Original Manuscript

The validity and reliability of the Functional Strength Measurement (FSM) in children with intellectual disabilities

W. F. M. Aertssen,

Corresponding Author

W. F. M. Aertssen

[email protected]

orcid.org/0000-0001-9233-2050

Avans+, University for Professionals, Breda, The Netherlands

Correspondence: Ms. Wendy Aertssen, laan 1940-1945 no. 60, 4194 RH Meteren, The Netherlands (e-mail: [email protected]).Search for more papers by this author

B. Steenbergen,

B. Steenbergen

Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands

School of Psychology, Australian Catholic University, Melbourne, Australia

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B. C. M. Smits-Engelsman,

B. C. M. Smits-Engelsman

Department of Health and Rehabilitation Sciences, Division of Physiotherapy, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

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W. F. M. Aertssen,

Corresponding Author

W. F. M. Aertssen

[email protected]

orcid.org/0000-0001-9233-2050

Avans+, University for Professionals, Breda, The Netherlands

Correspondence: Ms. Wendy Aertssen, laan 1940-1945 no. 60, 4194 RH Meteren, The Netherlands (e-mail: [email protected]).Search for more papers by this author

B. Steenbergen,

B. Steenbergen

Behavioural Science Institute, Radboud University, Nijmegen, The Netherlands

School of Psychology, Australian Catholic University, Melbourne, Australia

Search for more papers by this author

B. C. M. Smits-Engelsman,

B. C. M. Smits-Engelsman

Department of Health and Rehabilitation Sciences, Division of Physiotherapy, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa

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First published: 07 June 2018

https://doi.org/10.1111/jir.12508

Citations: 11

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Abstract

Background

There is lack of valid and reliable field-based tests for assessing functional strength in young children with mild intellectual disabilities (IDs).

Aim

The aim of this study was to investigate the test–retest reliability and construct validity of the Functional Strength Measurement in children with ID (FSM-ID).

Method

Fifty-two children with mild ID (40 boys and 12 girls, mean age 8.48 years, SD = 1.48) were tested with the FSM. Test–retest reliability (n = 32) was examined by a two-way interclass correlation coefficient for agreement (ICC 2.1A). Standard error of measurement and smallest detectable change were calculated. Construct validity was determined by calculating correlations between the FSM-ID and handheld dynamometry (HHD) (convergent validity), FSM-ID, FSM-ID and subtest strength of the Bruininks-Oseretsky test of motor proficiency – second edition (BOT-2) (convergent validity) and the FSM-ID and balance subtest of the BOT-2 (discriminant validity).

Results

Test–retest reliability ICC ranged 0.89–0.98. Correlation between the items of the FSM-ID and HHD ranged 0.39–0.79 and between FSM-ID and BOT-2 (strength items) 0.41–0.80. Correlation between items of the FSM-ID and BOT-2 (balance items) ranged 0.41–0.70.

Conclusion

The FSM-ID showed good test–retest reliability and good convergent validity with the HHD and BOT-2 subtest strength. The correlations assessing discriminant validity were higher than expected. Poor levels of postural control and core stability in children with mild IDs may be the underlying factor of those higher correlations.

References

Aertssen W. F. M., Ferguson G. D. & Smits-Engelsman B. C. M. (2016) Reliability, structural and construct validity of the Functional Strength Measurement (FSM) in children aged 4-10 years. Physical Therapy 96, 888–897.
10.2522/ptj.20140018
PubMed Web of Science® Google Scholar
Barr M. & Shields N. (2011) Barriers and facilitators to physical activity in children with Down syndrome. Journal of Intelectual Disability Research 55, 1020–1033.
10.1111/j.1365-2788.2011.01425.x
CAS PubMed Web of Science® Google Scholar
Beenakker E. A. C., van der Hoeven J. H., Fock J. M. & Maurits N. M. (2001) Reference values of maximum isometric muscle force obtained in 270 children aged 4–16 years by hand-held dynamometry. Neuromuscular Disorders 11, 441–446.
10.1016/S0960-8966(01)00193-6
CAS PubMed Web of Science® Google Scholar
Blomqvist S., Olsson J., Wallin L., Wester A. & Rehn B. (2013) Adolescents with intellectual disability have reduced postural balance and muscle performance in trunk and lower limbs compared to peers without intellectual disability. Research in Developmental Disabilities 34, 198–206.
10.1016/j.ridd.2012.07.008
PubMed Web of Science® Google Scholar
Bruininks R. H. & Bruininks B. D. (2005) Bruininks-Oseretsky Test of Motor Proficiency, 2nd edn. Pearson Assessment, Minneapolis.
Web of Science® Google Scholar
Cioni M., Cocilovo A., Di Pasquale F., Araujo M. B., Siqueria C. R. & Bianco M. (1994) Strength deficit of knee extensor muscles of individuals with Down syndrome from childhood to adolescence. American Journal of Mental Retardation 99, 166–174.
CAS PubMed Web of Science® Google Scholar
Cowley P. M., Ploutz-Snyder L. L. & Baynard T. (2010) Physical fitness predicts functional tasks in individuals with Down syndrome. Medicine and Science in Sports and Exercise 42, 388–393.
10.1249/MSS.0b013e3181b07e7a
PubMed Web of Science® Google Scholar
Dey A., Bhowmik K., Chatterjee A., Chakrabarty P. B., Sinha S. & Mukhopadhyay K. (2013) Down syndrome related muscle hypotonia: association with COL6A3 functional SNP rs2270669. Frontiers in Genetics 4, 1–8.
10.3389/fgene.2013.00057
Google Scholar
Golubovic S., Maksimovic J., Golubovic B. & Glumbic N. (2012) Effects of exercise on physical fitness in children with intellectual disabilities. Research in Developmental Disabilities 33, 608–614.
10.1016/j.ridd.2011.11.003
PubMed Web of Science® Google Scholar
Gupta S. & Rao B. K. (2011) Effect of strength and balance training in children with Down's syndrome: A randomized controlled trial. Clinical Rehabilitation 25, 425–432.
10.1177/0269215510382929
PubMed Web of Science® Google Scholar
Halle J. W., Gabler-Halle D. & Chung Y. B. (1999) Effects of a peer-mediated aerobic condition program on fitness levels of youth with mental retardation: two systematic replications. Mental Retardation 37, 435–448.
10.1352/0047-6765(1999)037<0435:EOAPAC>2.0.CO;2
CAS PubMed Web of Science® Google Scholar
Hartman E., Smith J., Westendorp M. & Visscher C. (2015) Development of physical fitness in children with intellectual disabilities. Journal of Intelectual Disability Research 59, 439–449.
10.1111/jir.12142
CAS PubMed Web of Science® Google Scholar
Hassani A., Kotzamanidou M. C., Tsimaras V., Lazaridis S., kotzamanidis C. & Patikas D. (2014) Differences in counter-movement jump between boys and girls with and without intellectual disability. Research in Developmental Disabilities 35, 1433–1438.
10.1016/j.ridd.2014.03.034
PubMed Web of Science® Google Scholar
Horvat M., Pitetti K. H. & Croce R. (1997) Isokinetic torque, average power and flexion/extension ratios in nondisabled adults and adults with mental retardation. Journal of Orthopaedic and Sports Physical Therapy 25, 395–399.
10.2519/jospt.1997.25.6.395
CAS PubMed Web of Science® Google Scholar
Lauteslager P. E. M. (2000) Children with Down Syndrome, Motor Development and Intervention. Universiteit Utrecht, Utrecht.
Google Scholar
Lin H. C. & Wuang Y. P. (2012) Strength and agility training in adolescents with Down syndrome: a randomized controlled trial. Research in Developmental Disabilities 33, 2236–2244.
10.1016/j.ridd.2012.06.017
PubMed Web of Science® Google Scholar
Mercer V. S. & Lewis C. L. (2001) Hip abductor and knee extensor muscle strength of children with and without Down syndrome. Pediatric Physical Therapy 13, 18–26.
10.1097/00001577-200113010-00004
CAS PubMed Google Scholar
Philips A. C. & Holland A. J. (2011) Assessment of objectively measured physical activity levels in individuals with intellectual disabilities with and without Down's syndrome. PLoS One 6, 1–7.
10.1371/journal.pone.0028618
Web of Science® Google Scholar
Smits-Engelsman B. C. M. & Verhoef-Aertssen W. F. M. (2012) Functional Strength Measurement (FSM): Manual. FSM production, Meteren. Available at: http://www.functionalstrengthmeasurement-fsm.com.
Google Scholar
Takken T. (2005) Richtlijnen Conditietraining Kinderen met obesitas. In: Afd Kinderfysiotherapie & Pediatrische Inspanningsfysiologie WKZ. UMC, Utrecht.
Google Scholar
Talma H. et al. (2010) Groeidiagrammen 2010. TNO, Den Haag.
Google Scholar
Tejero-Gonzalez C. M., Martinez-Gomez D., Bayon-Serna J., Izquierdo-Gomez R., Castro-Pinero J. & Veiga O. L. (2013) Reliability of the alpha health-related fitness test battery in adolescents with Down syndrome. Journal of strength and conditioning 27, 3221–3224.
10.1519/JSC.0b013e31828bed4e
PubMed Web of Science® Google Scholar
de Vet H. C. W., Terwee C. B., Mokkink L. B. & Knol D. L. (2011) Measurement in Medicine. Cambridge university press, New York.
10.1017/CBO9780511996214
Google Scholar
Whitney S. L., Wrisley D. M. & Marchetti G. F. (2005) Clinical measurement of sit-to-stand performance in people with balance disorders: validity of data for the Five-Times-Sit-to-Stand Test. Physical Therapy 85, 1034–1045.
PubMed Web of Science® Google Scholar
Wouters M., Evenhuis H. M. & Hilgenkamp T. I. M. (2017) Systematic review of field based physical fitness tests for children and adolescents with intellectual disabilities. Research in Developmental Disabilities 61, 77–94.
10.1016/j.ridd.2016.12.016
PubMed Web of Science® Google Scholar
Wuang Y. P. & Su C. Y. (2009) Reliability and responsiveness of the Bruininks-Oseretsky Test of Motor Proficiency – Second Edition in children with intellectual disability. Research in Developmental Disabilities 30, 847–855.
10.1016/j.ridd.2008.12.002
PubMed Web of Science® Google Scholar
Wuang Y. P., Lin Y. H. & Su C. Y. (2009) Rasch analysis of the Bruininks-Oseretsky Test of Motor Proficiency – Second Edition in intellectual disabilities. Research in Developmental Disabilities 30, 1132–1144.
10.1016/j.ridd.2009.03.003
PubMed Web of Science® Google Scholar
Wuang Y. P., Long I. M. & Liu M. F. (2012) Relationships between task-oriented postural control and motor ability in children and adolescents with Down syndrome. Research in Developmental Disabilities 33, 1792–1798.
10.1016/j.ridd.2012.05.002
PubMed Web of Science® Google Scholar
Wuang Y. P., Chang J. J., Wang M. H. & Lin H. C. (2013) Test–retest reliabilities of hand-held dynamometer for lower-limb muscle strength in intellectual disabilities. Research in Developmental Disabilities 34, 2281–2290.
10.1016/j.ridd.2013.04.010
PubMed Web of Science® Google Scholar

Citing Literature

Volume62, Issue8

August 2018

Pages 719-729

The validity and reliability of the Functional Strength Measurement (FSM) in children with intellectual disabilities

Abstract

Background

Aim

Method

Results

Conclusion

References

Citing Literature

References

Information

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The validity and reliability of the Functional Strength Measurement (FSM) in children with intellectual disabilities

Abstract

Background

Aim

Method

Results

Conclusion

References

Citing Literature

References

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