But what is not known is how much activity is needed to lose the fat inside the viscera or abdomen known to be the Bad Fat! Remember if you want to lose weight: the equation is more toward lesser intake of FOOD… while If you want physical conditining and maintenance of weight, the balance points more to physical activity.
Now comes this interesting data that looked at this particular question. How much exercise does one need to lose fat? The study was published in journal Obesity, Oct 8, 2009
The purpose of this study was to determine what effect aerobic and resistance exercise training has on gain of visceral fat during the year following weight loss.
After being randomly assigned to aerobic training, resistance training, or no exercise training, 45 European-American (EA) and 52 African-American (AA) women lost 12.3 2.5 kg on a 800 kcal/day diet. Computed tomography was used to measure abdominal subcutaneous and visceral adipose tissue, whereas total fat and regional fat (leg, arm, and trunk) were measured by dual energy X-ray absorptiometry after weight loss and 1 year following the weight loss. Because not all the subjects adhered to the 2 time/week 40 min/day exercise training during the 1-year follow-up, subjects were divided into five groups for analysis: aerobic adherers, aerobic nonadherers, resistance adherers, resistance nonadherers, and no exercise.
No significant differences were observed between the aerobic training and resistance training adherers for any variable. However, the aerobic (3.1 kg) and resistance (3.9 kg) exercise adherers gained less weight than any of the other three groups (all >6.2 kg).
In addition, the two exercise adherence groups did not significantly increase visceral fat (<0.8%) as compared with the 38% increase for the two nonadhering exercise groups and the 25% for the nonexercise group.
As little as 80 min/week aerobic or resistance training had modest positive effects on preventing weight regain following a diet-induced weight loss. More importantly, both aerobic and resistance training prevented regain of potentially harmful visceral fat.
I have been a believer of this fact… that relying heavily on physical activity alone to help one lose weight is doomed to fail. One needs to brisk walk for example around 70 minutes to burn 250 calories while eating french fries in a 5 minute snack time will already give you 320 calories!!!!
The above study points out the balance between cutting calories and physical activity. The mere 80min per week exercise resulted in the prevention of weight regain after a diet induced weight loss … especially the prevention of the regain of the visceral fat which is considered the Bad fat!
Now that is definitely not difficult to do!!!! How much more if we do physical activity on a daily basis? Once you get used to it…you’re hooked.
An example of being hooked: Just last night for example, I have to be in a symposium to give a lecture to cardiologists…but I really squeezed in at least a 20 min run prior to preparing for my talk…boy was it exhilirating to have sweat it out and boy was it refreshing afterwards!
No more excuses….
A little of something is better than Nothing….