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Original Articles

Putting fitness to the test: clinical application of the Fitkids Treadmill Test in youth with chronic pain

ORCID Icon, , , , , , , & show all
Pages 39-46 | Received 24 Jan 2020, Accepted 01 Jun 2020, Published online: 17 Jun 2020
 

Abstract

Purpose

Examine the clinical utility of the Fitkids Treadmill Test (FTT) for assessing cardiovascular endurance in youth with chronic pain.

Materials and methods

Fifty-five youth with chronic pain completed the FTT at admission and discharge from intensive interdisciplinary pain treatment (IIPT). Feasibility, construct validity and responsiveness of the FTT were examined retrospectively using a clinical data registry.

Results

Participants’ FTT time to exhaustion (TTE) improved by 1.5 min after IIPT (95% CI: 1.1–2.0 min), yet remained below age and sex-matched norms. Construct validity was only supported by performance-based assessments of physical function. Evidence of discriminant validity was found, as the FTT was not correlated with unrelated biopsychosocial constructs.

Conclusions

Youth with chronic pain present with significant deficits in cardiovascular endurance that are not fully reversed after IIPT, highlighting the importance of ongoing aerobic training after discharge. Findings support the FTT as a valid, objective measure of cardiovascular endurance in youth with chronic pain. FTT performance is relatively unencumbered by psychosocial constructs.

Acknowledgements

The authors acknowledge Sarah Coucci, PT, DPT for her contributions to data collection and patient care.

Disclosure statement

The authors declare no conflicts of interest.

Additional information

Funding

The Richard and Sara Paige Mayo Endowment for Paediatric Pain Research at Boston Children’s Hospital supported this study.

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