2nd and 3rd September 2011,a General Lecture Theatre, Dr Chirantan Mandal, Dr Avik Basu, Dr Dipayan Sen Dr Ushnish Adhikari,Dr Srimanti Bhattacharya, Dr Shubham Presided by Dr Arnab Sengupta (Physiology Dept Medical College Kolkata)

1. EXERCISE AND SPORTS PHYSIOLOGY CARDIOVASCULARRESPONSE TO EXERCISE Presented by: AVIK BASU

2. The following aspects of cardiovascular system are influenced by exercise: 1. Blood Flow Distribution 2. Heart Rate 3. Cardiac Output 4. Blood Pressure

3. REGULATION OF BLOOD FLOW

4. Metabolic What is auto-regulation? Myogenic It is a manifestation of local blood flow regulation in a particular organ system at tissue level

5. Metabolic Theory of Auto-regulation Pre-capillary Sphincters Closed Pre-capillary Sphincters Opened

6. During Exercise…

7. Blood Flow Redistribution during Exercise

8. GOALS OF BLOOD FLOW REDISTRIBUTION Satisfy the altered nutritional requirement Keep the core body temperature at a constant Maintain perfusion of the essential organs

9. REGULATION OF HEART RATE

10. DURING EXERCISE...

11. AT REST DURING EXERCISE

12. REGULATION OF CARDIAC OUTPUT

13. FACTORS RESPONSIBLE FOR INCREASED CARDIAC OUTPUT IN EXERCISE Increased venous return to the heart Positive inotropy Positive chronotropy

14. GRAPHICAL REPRESENTATION OF THE RELATIONSHIP BETWEEN CARDIAC OUTPUT, VENOUS RETURN AND INOTROPY AND THEIR CHANGES DURING EXERCISE

15. REGULATION OFBLOOD PRESSURE

16. EFFECT ON SYSTOLIC BLOOD PRESSURE Catecholamine release during exercise Positive chronotropy and inotropy Rise in Systolic Blood Pressure

17. EFFECT ON DIASTOLIC BLOOD PRESSURE In Aerobic Exercise… DBP is decreased In Anaerobic Exercise… DBP is increased

18. THANK YOU!