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![There are three ways to measure heart performance in sport and exercise: Heart Rate 64 beats per minute is a typical result for a fit person at rest. The total amount of blood pumped out of the heart in one beat . Definitions of Heart Function The number of times the heart beats per minute . Stroke Volume ,[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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- 5. For example… Stroke Volume = 75 ml Heart Rate = 65 b.p.m. Cardiac Output = 75 x 65 = 4875 ml Stroke Volume = 150 ml Heart Rate = 200 b.p.m. Cardiac Output = 150 x 200 = 30000 ml Cardiac Output At rest… While exercising… Cardiac output is… … the total output of blood from the heart in one minute . It is calculated using the formula… Cardiac Output = Stroke Volume x Heart Rate
- 9. Regulators of the Heart: Factors Influencing Stroke Volume
- 10. Distribution of blood flow (Q) during rest and heavy exercise
- 13. LONG-TERM EFFECTS OF EXERCISE ON THE HEART Most studies use data taken from male subjects. Values for females may differ When CV improvements are made and efficiency is increased, Q could be higher to compensate for the reduction to the HR. However as the SV will have increased through training the increase in Q may be small 140 ml Av. 70 ml Stroke volume 20 – 25 l/min Av. 5 l/min Cardiac output (Q) Max. 22-0 – age in years Av. 72 bpm Heart rate During exercise At rest