exercise and activity in obesity management mark young, bkin, ck
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Exercise and Activity in Obesity
ManagementMark Young, Bkin, CK
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Exercise and Calorie Expenditure
- Average person burns ~ 5-10 calories / minute during exercise
- Equals approximately 300-600 calories per hour of activity
- 1 pound of fat = 3500 calories
- To burn 1 pound of fat = 5.8-11.7 hours of exercise per week
- This amounts to 50-100 minutes per day!!!
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-7.0 -5.0 -3.0 -1.0 1.0
Exercise and Weight Loss
Wing. Med Sci Sports Exerc 1999;31(suppl):S547.
*P<0.05 vs control group
Duration of each study ranged from 4 to 12 months.
Stefanick 1998
Stefanick 1998a
Anderssen 1995
Hammer 1989
Verity 1989
Rönnemaa 1988
Wood 1988
Wood 1983
Weight loss (kg)
Control Group
Exercise Group
**
**
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-15 -10 -5 0
Exercise and Weight Loss
*P<0.05 vs diet-only group.
Wadden 1997
Ross 1996
Marks 1995
Ross 1995
Blonk 1994
Sweeney 1993
Bertram 1990
Weight loss (kg) Diet Only
Diet + Exercise
*
Wing RR. Med Sci Sports Exerc. 1999;31(suppl):S547-S552.
Each study ranged from 4 to 6 months.
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0
5
10
15
20
25
30
35
Exercise and Fat-Free Mass
Diet Only
Loss
of F
at-F
ree
Mas
s(%
Tot
al W
eigh
t Los
s)
Diet PlusPhysical Activity
Men
Women
*P<0.05
Reprinted with permission from Int J Obes Relat Metab Disord, Ballor and Poehlman;18:35. Copyright 1994 Macmillan Publishers Ltd.
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0
20
40
60
80
100
Exercise and Weight Maintenance
Not Maintained
Sub
ject
s E
xerc
isin
g (%
)
P<0.001
Weight Loss PatternMaintained
Reprinted with permission by the American Journal of Clinical Nutrition. © Am J Clin Nutr. American Society for Clinical Nutrition.
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But what if it isn’t all just about weight?
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Exercise and Visceral Fat
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Exercise and Waist Circumference
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Exercise and Body Composition
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Exercise and Cardiovascular Risk
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Exercise and Cardiovascular Fitness
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Summary
- Exercise has a modest effect on weight loss
- Exercise plays a key role in maintenance of fat free mass and weight maintenance
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Summary
- Exercise (even with little weight loss) can have positive effects on Diabetes, hypertension, visceral fat, functional capacity, cardiovascular fitness, and other obesity related comorbidities.
- These benefits can be had in as little as 150 minutes per week split between aerobic and resistance training.