Will Someone Lose More Weight Running In The Heat Of The Day Rather Than Late At Night?
Say person A runs a mile everyday for a month at 3pm in 90 degree weather with 90% humity.
Person B runs a mile everyday for a month at 11pm when it is 75 degrees with 30% humity.
Would person A lose MORE weight than person B? or would they lose the same? or what?
Actually, I been researchign this topic for 2 weeks. And I am going to take an Environmental exercise class as a graduate class at a university.
I was interested in this because I used to run int he morning, do high intensity runs of 3 miles like nothing. Heart rate would be high when I finally was done to around 194 beats per minute.
I noticed that when I switched to running at 5pm, my ehart rate was immediately 194-196 after a couple laps of high intensity workouts. My heart rate would be sky high. I wouldnt last as long when I sprinted. I used to be able to do 6 600 meter sprints with 1 minute recovery. Now I suffer when I do 4 400 m sprints.
I asked my professor, a Doctor in Exercise Physiology and he said…here ill copy and paste his email to me …
Hey Dr. Coburn.
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Bao Vo
My name is Bao Vo and I was in your KNES 348 class. I was just wondering if y…
Jul 22 (2 days ago)
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Coburn, Jared
to me
show details 1:21 PM (1 hour ago)
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Follow up message
Hi Bao,
It is true that heart rate is elevated when exercising in the heat. This is because the heart must circulate blood to both the muscles (for making ATP aerobically and removing carbon dioxide etc.) and the skin (for sweating in order to cool the body). Because it’s working harder, heart rate must increase, and exercise performance usually suffers as a result. It is also true that caloric expenditure is increased at rest during the summer. However, the increased number of calories expended is negligible, and the decrease in exercise intensity due to the heat will offset any benefit from the increase in resting metabolism.
Jared W. Coburn, PhD, CSCS,*D, FNSCA, FACSM
Associate Professor
Department of Kinesiology
California State University, Fullerton
800 N. State College Blvd., KHS-235
Fullerton, CA 92834-6870
Tel. (657) 278-2629, Fax (657) 278-1548
E-mail: jcoburn@fullerton.edu
From: Bao Vo [baovo0386@csu.fullerton.edu]
Sent: Wednesday, July 22, 2009 6:58 PM
To: Coburn, Jared
Subject: Hey Dr. Coburn.
- Show quoted text -
My name is Bao Vo and I was in your KNES 348 class. I was just wondering if you can help me out on a question. I used to do my running in the momrning. Now I do lifting in morning and running around 5-6 at night. I noticed my heart rate is now 194 and I don;t last as long as I usually do. So does heat increase heart rate?
My second question is is it easier to burn fat when its hot than when its cold? I read on online that people tend to burn more fat in summer than in winter.
Your answer is greatly appreciated and I know that you are a busy man.
Thanks,
Bao Vo
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So yeah you will burn mroe calories minute for minute and stuff, but it is hard to keep on going as long as you do in the monrbing.
It depends on the persons weight the heavier you are the more you will lose, it doesn’t really matter the heat of the day however you can sweat more in the heat but you have a greater risk of heat stroke.
They would sweat more and lose more water weight but i don’t think actual body fat