P409 Cardiovascular Responses To Acute Exercise(In-Focus & In-Review)

Front 1

(6) Components of Cardiovascular Function

Back 1

1)Heart Rate

2)Stroke Volume

3)Cardiac Output

4)Blood Pressure

5)Blood Flow

6)Blood

Front 2

In-Focus

Back 2

Pre-exercise heart rate is not a reliable estimate of RHR because of the anticipatory HR response

Front 3

In-Focus

Back 3

HRmax = 208 - (0.7 x age/yrs)

Front 4

Steady-state heart rate(1)

Back 4

rate of work held constant at sub-maximal intensity, HR increases rapidly until plateau, optimal HR for meeting the circulatory demands at that specific rate of work.

For each increase in intensity HR will reach a new steady-state value within 2-3min.

Front 5

Steady-state heart rate(2)

Back 5

-Steady-state HR is valid predictor of Cardiorespriatory fitness

-Lower steady-state HR reflects greater Cardiorespiratory fitness level.

Front 6

Stroke Volume: 4 Factors

Back 6

1) The volume of venous blood returned to the heart (heart can only pump what returns) : preload

2) Ventricular disensibiltiy( capacity to enlarge the ventricle, for maximal filling

3) Ventricular Contracility(the inherent capacity of the ventricle to contract): Sympathetic influence

4) Aortic or pulmonary artery pressure(the pressure against which the ventricles must contract: afterload)