Key result
High-intensity cycling raises cTnI above 0.04 ng/mL in a chronically energy-depleted female.
Why the study?
The cardiac biomarker response to short duration, high-intensity exercise in individuals with chronic energy restriction is incompletely understood.
Does high-intensity exercise elevate cardiac troponin I in individuals with chronically low-energy availability?
Comparison
High-intensity cycle ergometer sprints vs baseline
Design
Case report
Authors
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May signal myocardial stress risk in energy-deficient states during intense exercise; leaves open generalizability pending larger prospective studies.
Case Report (n=1)
Does high-intensity exercise elevate cardiac troponin I in individuals with chronically low-energy availability?
Individuals who habitually restrict calorie intake may be at risk for exercise-induced myocardial stress during high-intensity exercise.
Baird et al. (2017) conducted a case report in chronically low-energy availability (n=1). High-intensity cycle ergometer sprints was evaluated on Cardiac troponin I (cTnI) levels. High-intensity cycle ergometer exercise in a female with chronically depleted energy balance resulted in clinically raised cardiac troponin I levels (>0.04 ng/mL).
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