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07-18-2011, 12:13 PM
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Originally Posted by night-timer View Post
1. Lactic acid (what it is, how it occurs, how to prevent it, etc), and
Having quite some experience in endurance sport I can comment on that.
The key in any type of effort is the amount of oxygen in your blood.
Oxygen is carried in red blood cells and is supplied through breathing.
The harder the effort the higher your heart rate and therefore the more oxygen your body/blood needs.
Up to a certain level of effort the oxygen supplied through breathing is sufficient.
Beyond that your body will 'create' it's own oxygen, this results in lactic acid which cannot be sustained for a longer period of time.
The level of effort that can be sustained through breathing is called 'aerobic' while one where breathing is not sufficient is called 'anaerobic'.
The point/heart rate when your body switches for aerobic to anaerobic is called your 'anaerobic threshold' and is different from person to person. Training will increase your anaerobic threshold.
Endurance sports are typical aerobic and sprints anaerobic.
Hockey is an anaerobic sport, so you will build up lactic acid every shift. Key is to be able to flush out that lactic acid and recover between shifts.
I hope that all makes sense.

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