Biking to Work as Effective as Leisure Time Exercise

Jump on the bike and enjoy the morning ride to work. If you are overweight and inactive you can lose fat mass just as effectively and fast by biking to work as by exercising in a fitness center. This is the conclusion reached by researchers from the Department of Biomedical Sciences at the University of Copenhagen in a study that has just been published in the scientific journal International Journal of Obesity.

‘This is good news to the many overweight people who may not have the time or inclination to join a fitness center, because they also have to pick up their children and cook dinner after work. Our results show that it is possible to combine transport to and from work with effective physical exercise’, says Professor and Head of Department Bente Stallknecht.

The study involved 130 overweight people with a BMI of 25-35 kg/m2. A criterion for participating in the study was they were not too active or muscular based on a series of parameters like body fat percentage, maximum oxygen uptake and level of physical activity.

The participants were divided into four groups of which one had to ride the bike to and from work. Two other groups had to do physical exercise five times a week, one at high intensity, the other at moderate intensity. The last group could make no changes and thus functioned as the control group.

The biking groups that were physically active during their leisure time burned the same amount of calories a week during these activities; only the intensity and form of physical exercise varied. Throughout the test — using the heart rate monitors, among other things — the researchers checked that the participants met the requirements and did the physical exercise they were asked to do.

After six months all groups, except for the control group, had less fat mass. The fat mass had been reduced by 4.5 kg (compared to the control group) in the group doing high-intensity leisure time exercise, by 2.6 kg in the group doing moderate-intensity leisure time exercise and by 4.2 kg in the group riding the bike to work. The difference between the three physically active groups was only statistically significant between the two groups doing leisure time exercise.

‘All forms of physical exercise are better than the control group, but high-intensity exercise is statistically better than moderate-intensity exercise. And biking to and from work is at least as effective a means for reducing fat mass as exercising during your leisure time’, says Research Assistant Jonas Salling Quist from the Department of Biomedical Sciences who participated as PhD student and author of the study.

Story Source:  University of Copenhagen The Faculty of Health and Medical Sciences.

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