A Study on Short Duration of Physical Exercise, Short- Term Endurance Training and its Correlation to Cvs Performance in Healthy Male Subjects

Background: The autonomic nervous system establishes and maintains a dynamic adaptive state, allowing an organism to respond to internal and external demands. It mediates changes in HR, BP and peripheral vascular tone in responses to daily changes, including change of posture and physical exercise.

Aims: To evaluate the ability of HRV by using short term physical exercise of endurance in nature and study the transient changes in HRV in response to a bout of endurance exercise.

Method and Material: 50 male healthy, non-athletic, young individuals from various socioeconomic groups. In the supine position systolic blood pressure, diastolic blood pressure and pulse rate were recorded and continuous standard lead II ECG was recorded for five minutes in eyes closed relaxed state.

Results: The mean age of male is 19.12±1.33. Heart rate response to graded exercise on bicycle ergometer showed a significant decrease at 3rd , 4th , 5th&6th minute after physical training[p<0.05]. There was no significant change in post training values of time and frequency domain measures of HRV the trend.

Conclusions: Endurance exercise training sessions performed over 4 weeks significantly alters cardiac autonomic modulation.