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A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion
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Resting Metabolic Rate and Recovery From Sport-Related Concussion: A Critically Appraised Topic.

J Matthew Nerrie1, Tamara C Valovich McLeod2

  • 1Northwestern Medicine, Evanston, IL, USA.

Journal of Sport Rehabilitation
|January 20, 2025
PubMed
Summary
This summary is machine-generated.

Resting metabolic rate (RMR) is not a reliable indicator for sport-related concussion (SRC) recovery. Studies indicate RMR is unaffected by SRC, even when compared to healthy individuals, suggesting it cannot be used as a physiologic assessment.

Keywords:
energy balanceenergy expenditureindirect calorimetrymetabolismmild traumatic brain injury

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Area of Science:

  • Sports Medicine
  • Neurology
  • Metabolic Science

Background:

  • Assessing concussion recovery lacks a definitive gold standard.
  • Existing methods like biomarkers, EEG, and neuroimaging show limited empirical evidence.
  • Whole-body metabolism as a recovery metric requires critical appraisal.

Purpose of the Study:

  • To evaluate if resting metabolic rate (RMR), measured via indirect calorimetry, can serve as a physiologic assessment for sport-related concussion (SRC) recovery in patients.

Main Methods:

  • A critical appraisal of existing evidence was conducted.
  • Three relevant studies were selected for analysis: two case-control and one case series.
  • Indirect calorimetry was the primary method for measuring RMR.

Main Results:

  • All three studies found that RMR was not significantly affected by SRC.
  • Initial assessments (24-72 hours post-injury) showed reduced total energy expenditure and increased energy balance.
  • One study noted a potential sex difference in RMR, though with a very small sample size.

Conclusions:

  • Resting metabolic rate (RMR) is a poor indicator for assessing recovery from sport-related concussion (SRC).
  • Current evidence suggests RMR is not a reliable physiologic marker for concussion recovery.
  • A strength of recommendation grade B supports this conclusion.