Effect of Aerobic Exercise on Blood Glucose and CVD Risk in Glucose Metabolism Disorders People

It's essential for glucose metabolism disorders people to monitor the change of blood glucose,heart rate(HR),systolic blood pressure(SBP) during and after exercise in order to prevent hypoglycemia and CVD risks. PURPOSE: To determine blood glucose after aerobic exercise in glucose metabolism disorders people, and to monitor recovery of HR and SBP. METHODS: By PAR-Q and OGTT, 58 subjects were divided into : normal glucose metabolism group(N,n=18), impaired fasting glucose(IFG) group(PD,n=20),and diabetes group(D,n=20).Everyone completed 30-minute cycle ergometer at 45%-55%HRR. According to assessment standard of HR recovery and abnormal standard of SBP increasing during exercise, the CVD risk was judged. All subjects were provided the same amount diet, and exercise began just after one hour of the meal.All wrote consent,and the study was approved by the ethical committee of BSU. RESULTS: (1)Compared with blood glucose at the beginning of the exercise,the decreased amount of PD and D were bigger than N's(At the moment of finishing exercise,blood glucose of N, PD and D decreased respectively 2.19±1.25 mmol/L,3.59±1.47,3.19±2.02;at 1h-point after exercise,1.31±1.25, 2.29±2.63, 2.66±2.57; at 2h,2.11±1.31, 3.72±1.77,4.66±2.47,P<0.05.)(2)The fluctuation of blood glucose in PD and D were much sharper than N's when the data of seven time-point samples were calculated(1.62±0.53,1.96±0.73,1.11±0.44,P<0.05 and P<0.01),and the seven time-points followed as fasting glucose,1h after meal,the moment just finishing exercise,15min, 30min,1h,2h in turn. (3)As to N,PD,D's HR, the incidences of abnormal recovery at the 1st minute after exercixe were 6.7%,13.3%,13.3% respectively,and the incidences of SBP abnormal increase during exercixe were 20%,33.3%,60%. CONCLUSIONS: (1)The study found blood glucose of healthy or glucose metabolism disorders people after aerobic exercise changed regularly:decreased remarkably at the end of exercise, and then increased gradually with its peak at 30min, recovering almost entirely at 2h-point.(2)IFG subjects benefited more in blood glucose from 30min aerobic exercise than diabetes. (3)The CVD risk of exercise for diabetes patients was higher than that for IGR people and healthy ones. Supported by Research on Prevention and Control of Major CNCD(2016YFC1300202).