Study finds endurance training improves fitness, insulin sensitivity
A 12-week study of 46 adults with obesity reported that endurance training without weight loss raised peak oxygen uptake 9% and insulin sensitivity 23%; a weight-loss group recorded a 42% increase in insulin sensitivity.
A 12-week study enrolled 46 men and women with obesity and compared weight loss alone, endurance training alone without weight loss, and delayed control, according to its PubMed abstract.1
The endurance-training group’s peak oxygen uptake (VO₂peak) increased 9%, while insulin sensitivity rose 23%; the weight-loss group lost 10% of body weight and had a 42% increase in insulin sensitivity. The paper also reported different changes in skeletal-muscle lipid storage after exercise and weight loss.1
For trainers, the comparison provides separate outcome figures for these interventions over 12 weeks, not a universal forecast for individual clients.1
