A study has revealed that pre-training glycemic level has considerable effect on exercise-induced improvements.
According to a research letter by Thomas P. J. Solomon, Ph.D. of the Centre of Inflammation and Metabolism, Copenhagen, Denmark, and colleagues, although moderate-intensity aerobic exercise can improve glycemic control, individuals with ambient hyperglycemia (high blood glucose) are more likely to be nonresponders.
AdvertisementA total of 105 overweight people with an average age of 61, who suffered from impaired glucose tolerance or type 2 diabetes mellitus (T2DM), participated in a 12-to 16-week period of aerobic exercise training.
Researchers measured the participants' body composition, aerobic fitness, and glycemic control, and assessed the relationships between pre-intervention variables and intervention-induced changes.
Average change in body weight, whole-body fat, fasting plasma glucose and 2-hour oral glucose tolerance test (OGTT) were significantly improved following exercise training.
However, researchers found that aerobic exercise-induced improvements in glycemic control were reduced by ambient hyperglycemia, particularly in participants with T2DM.