Naked Science Forum

Life Sciences => Physiology & Medicine => Topic started by: Schoemann.A on 08/09/2011 09:30:03

Title: Can the same intensity of exercise between similar people burn different amounts of calories?
Post by: Schoemann.A on 08/09/2011 09:30:03
Schoemann.A asked the Naked Scientists:
   Dear Chris,
I thoroughly enjoy your discussions on Radio 702 ( The query I have is too long for a telephonic question.
I am 57 years old, female and have been cycling and doing triathlons competetively since 2001. Provincially, Nationally and Internationally.
When cycling/training with a group of men and women of equal fitness and age, give or take, I have found that my calories burnt are about one third of that of the rest of the group.
Eventually I blieved my Polar Heart Rate Monitor's battery was failing or that my settings were incorrect. All that was checked by Polar themselves and all was in order. My readings were still about one third of that of the group of athletes. I eventually bought a new model Polar Watch specifically for cycling and running, carefully entered the settings, had them checked by two people with the same watch, and still my readings of calories burnt reflect only one third or less than those of my co-athletes.
Why would that be? Slow Metabolism? If so how can I hasten it?
Our training sessions are of equal time and intensity. When they have burnt between 2 100 and 2 300 Calories, I would have burnt 720 Calories.
Am anxious to receive an explanation and thanking you in anticipation.
Best regards
Anneliese Schoeman

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