Saturday, January 3, 2009

HR Training

Heart rate variations for a given intensity
A reduction in heart rate for a given intensity is usually due to an improvement in fitness but a number of other factors might explain why heart rates can vary for a given intensity:

  • Dehydration can increase the heart rate by up to 7.5%
  • Heat and humidity can increase the herat rate by 10 beats/minute
  • Altitude can increase the heart rate by 10 to 20%, even when acclimatised
  • Biological variation can mean the heart rate varies from day to day by 2 to 4 beats/minute

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