“The Effect of Sitting and Moderate Exercise on Plasma Insulin and Glucose Responses to an Oral Glucose Tolerance Test”
The investigators hypothesize that cycling for 1 hour of exercise at 65% peak oxygen consumption (VO2peak) after sitting >13 hr/day (SIT+EX) will not be different in postprandial plasma insulin responses compared to the control of only sitting (SIT). Furthermore, the investigators hypothesize that the SIT and SIT+EX groups will have a less favorble insulin response compared to the physically active group after performing the same 1-hour exercise bout (ACTIVE+EX).
Behavioral - SIT
For the SIT and SIT+EX conditions, the subject will be asked to take <3,000 steps. This is meant to achieve ~12-13 hours of sitting per day, are the investigators are measuring the effect of inactivity and exercise on insulin sensitivity.
Behavioral - ACTIVE
For the ACTIVE+EX condition, the subject will be asked to take >10,000 steps for the two intervention days. This is meant to simulate an active lifestyle.
Behavioral - EX
The SIT+EX and ACTIVE+EX conditions will include an exercise bout on the evening of the second intervention day, and have the oral glucose tolerance test the next morning.
The Effect of Sitting and Moderate Exercise on Plasma Insulin and Glucose Responses to an Oral Glucose Tolerance Test