For blood glucose there was little difference between groups at any time point .
Objective Type 1 diabetes mellitus rates are rising worldwide .
The health benefits of physical exercise in this condition are many , but more than 60 % do not participate , mainly from fear of hypoglycemia .
This systematic review explores the effects of physical exercise modes on blood glucose levels in adults for hypoglycemia prevention .
Guidelines for premeal insulin dose reduction for postprandial exercise of different intensities and durations in type 1 diabetic subjects treated intensively with a basal-bolus insulin regimen (ultralente-lispro).
OBJECTIVE To evaluate and vali date appropriate premeal insulin dose reductions for postpr and ial exercises of different intensities and duration s to minimize the risk of exercise-induced hypoglycemia in type 1 diabetic subjects . RESEARCH DESIGN AND METHODS Eight male type 1 diabetic patients on a basal-bolus insulin regimen of ultralente ( UL ) as basal insulin and lispro ( LP ) as premeal insulin  were tested in a r and omized , crossover fashion during postpr and ial exercise at 25 % VO2max for 60 min , 50 % VO2max for 30 and 60 min , and 75 % VOmax for 30 min starting 90 min after a st and ardized mixed breakfast ( 600 kcal , 75 g carbohydrates ) . Each subject served as his own control and was rested after a full dose of insulin LP ( LP 100 % ) and /or 50 % ( LP 50 % ) and /or 25 % ( LP 25 % ) of the current dose . RESULTS At all intensities , the full premeal insulin dose was associated with an increased risk of hypoglycemia . At 25 % VO2max for 60 min , a 50 % reduction in the premeal insulin dose result ed in plasma glucose of -0.62 mmol/l compared with baseline at the end of exercise . At 50 % VO2max for 30 and 60 min , 50 and 75 % reductions of the premeal insulin dose were associated with plasma glucose of -0.39 and + 0.49 mmol/l , respectively , at the end of the exercise . At 75 % VO2max , a 75 % reduction of the premeal insulin dose was required to achieve appropriate postexercise plasma glucose ( + 0.71 mmol/l ) . Such reductions in the premeal insulin dose result ed in a 75 % decrease in the incidence of exercise-induced hypoglycemia . CONCLUSIONS In well-controlled type 1 diabetic subjects on intensive insulin therapy with the basal-bolus ( UL-LP ) insulin regimen , risk of hypoglycemia can be minimized during postpr and ial exercises of different intensities and different duration s by appropriate reduction of premeal insulin LP
For blood glucose there was little difference between groups at any time point .
Objective Type 1 diabetes mellitus rates are rising worldwide .
The health benefits of physical exercise in this condition are many , but more than 60 % do not participate , mainly from fear of hypoglycemia .
This systematic review explores the effects of physical exercise modes on blood glucose levels in adults for hypoglycemia prevention .