Key result
High-intensity training significantly improved heart rate variability in young adults, including RMSSD (MD 13.35; 95% CI 1.73-24.97) and high-frequency power (MD 381.7; 95% CI 321.54-441.86).
Why the study?
High-intensity training is a potential time-effective alternative to traditional aerobic exercise, but its effect on heart rate variability in sports professionals and healthy young adults needed evaluation.
Does high-intensity training improve heart rate variability in sports professionals and healthy young adults?
Systematic Review (n=7)
Does high-intensity training improve heart rate variability in sports professionals and healthy young adults?
Effect estimate: MD 13.35 (95% CI 1.73-24.97)
High-intensity training for 2-4 weeks improves parasympathetic and sympathetic cardiac modulation as measured by heart rate variability in young adults.
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High-intensity training may enhance autonomic function in young adults; confirms short-term HRV benefits via systematic synthesis.
Shenoy et al. (2020) conducted a systematic review in Healthy young adults and sports professionals (n=7). High-intensity training (HIT) was evaluated on Time and frequency domains of heart rate variability (HRV) (MD 13.35, 95% CI 1.73-24.97). High-intensity training significantly improved heart rate variability in young adults, including RMSSD (MD 13.35; 95% CI 1.73-24.97) and high-frequency power (MD 381.7; 95% CI 321.54-441.86).
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