Immediate Physiological Response to Training

From Biki

Contents 1 Immediate Physiological Response to Training 1.1 Heart Rate 1.2 Ventilation Rate 1.3 Stroke Volume 1.4 Cardiac Output 1.5 Lactate Levels

Immediate Physiological Response to Training

Heart Rate

• Heart rate measures the intensity of exercise and your fitness level
• During exercise: increases then levels off (if you’re fit)
• After exercise: rapid decrease (if you’re fit this is fast) then slows gradually

Ventilation Rate

• Definition: the movement of air in (inspiration) and out (expiration) by the lungs
• Measured by minute ventilation: breaths per minute
• During exercise: increases
• Training improves lung function

Stroke Volume

• Definition: the amount of blood pumped by the heart in each beat, measured in mLs/beat
• The fitter person: at rest: sv is greater, during exercise: much greater
• Great increase between rest and moderate exercise

Cardiac Output

• Definition: volume of blood pumped out of the heart each minute
• Is stroke volume X heart rate
• During exercise: increases to get oxygen to working muscles
• Fitter person: about the same because stroke volume increases but heart rate decreases

Lactate Levels

• Lactate: a salt formed from lactic acid accumulates during intense anaerobic activity
• During exercise: pH levels decrease, = acidic = difficult to contract muscles
• Oxygen cannot remove the lactic acid quickly enough
• Lactate threshold: 50% of Max, when lactate starts to build, can be raised by aerobic (endurance) training
• Eg 400m

---

This page is a stub and is incomplete.

Why not add to it? Don't be intimidated - we welcome all contributions!