I have lost 25 kg in about a year. I used to be 100 kg and at the moment I am 75 kg. I have monitored my physical activity and nutrition during the past year.

For nutrition I use a program Nutris (www.nutris.com). Nutris has also a diary and a calculator for physical activity, but I started by using a program called Metpro. To evaluate my energy consumption I have used a heard rate monitor (Polar F55) and Armband from http://www.bodymedia.com/main.jsp

By comparing results on different ways of measuring energy consumption in a round of golf, I have noticed that it is not very exact. Difference between methods can be 50%. (Still it's the same round and same person.)

Also I am monitoring physical activity all the time. It is not useful to estimate only some activities - like golf, because it will affect your behavior before and after your round too.

I started to monitor nutrition and physical activity to loose weight and to get in better physical condition. Now I am more interested in the intensity of the physical activity than the actual total. It is not how much you burn calories, for me - the quality and intensity is important.

I compare the intensity to my physical capacity - the maximum I could do. Work done under 40% of my max is for basic endurance (and also burning fat). 40 - 60 % is aerobic exercise and 60 - 90% is for power and strength. Of course all physical activity burns calories - also inactivity. We burn calories about 1 kcal per hour per kilogram of our weight when we are resting. (I am 75 kg so every hour I burn 75 kcal just watching golf on television:-)

Yu Xiang, I might be able to give you a better answer, if I knew why do you want to know how much calories are burned during a golf round.

Hannu