Key result
Physical activity and cardiorespiratory fitness showed no significant correlation with time or frequency domain measures of heart rate variability among young overweight adults.
Why the study?
Altered cardiac autonomic function predisposes overweight individuals to increased cardiovascular disease risk, prompting investigation into its correlation with physical activity and cardiorespiratory fitness.
Cross-Sectional (n=45)
No
Physical activity and cardiorespiratory fitness do not appear to correlate with short-term heart rate variability in young overweight adults without known medical conditions.
No correlation observed; should not yet change practice and leaves open whether fitness interventions affect autonomic function in this population.
Objective: Cardiac autonomic function assessed by heart rate variability (HRV) is a non-invasive, quantitative, and reliable marker of measurement. An altered cardiac autonomic function among overweight individuals predisposes them to a greater risk of developing cardiovascular diseases. The present study aims to determine the correlation between physical activity, cardiorespiratory fitness and heart rate variability among young overweight adults. Physical activity level and cardiorespiratory fitness were measured using the Global Physical Activity Questionnaire and Bruce treadmill protocol test, respectively. Cardiac autonomic function was measured using a 5-min short-term heart rate variability recording. The time and frequency domain measures of HRV were used for analysis. Results: The mean age of study participants was 22.53 ± 1.58 years and mean body mass index was 27.38 ± 1.51 kg/m2. Among young overweight adults, cardiorespiratory fitness and physical activity were not correlated with Root mean square of successive RR interval differences, Percentage of successive RR intervals that differ by more than 50 ms, and Ratio of LF [ms2]/HF [ms2]. Conclusion: The study found no correlation between physical activity and cardiorespiratory fitness with heart rate variability among young overweight individuals.
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Nataraj et al. (2022) conducted a cross-sectional in Overweight (n=45). Physical activity and cardiorespiratory fitness was evaluated on Correlation of physical activity and cardiorespiratory fitness with heart rate variability parameters. Physical activity and cardiorespiratory fitness showed no significant correlation with time or frequency domain measures of heart rate variability among young overweight adults.
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