Most previous exercise interventions studied individuals of
different ages, lengths of interventions, and types and intensity
of exercise than our study. Although most exercise interventions
have shown a decrease in body weight and increment of VO 2
max indicating cardiorespiratory conditioning, an effect in
improving lipid profile has not been uniform. Our failure to
demonstrate enough effect on lipid profile may reflect the mild
intensity of exercise in our study as VO 2 max increased only by
5.7%. Recently, it has been reported that a mixed aerobic and
resistance training was more effective in the chronic modifica-
tion of lipid profile in overweight men [28]. Moreover, a meta-
analysis suggests that combined training might be the most
efficacious exercise modality to improve glycemic control and
blood lipids [29]. It is also important to consider the volume of
exercise. It has been reported that for most individuals the
positive effects of regular exercise on blood lipids at low training
volumes may take some time to show up, but noticeable differ-
ences frequently occur with energyexpenditures of 1200 to2200
kcals/wk