Protein intake after exercise trial
Can protein intake after exercise decrease the risk of delayed low blood glucose levels after exercise?
Previous studies have shown that exercise in the late afternoon can increase the risk of low BGL not just straight after exercise but also during the night. The aim of this study is to find out if eating protein after exercise can help prevent low BGL later that night.
Visit 1: Meet the study team and collect some general information from you. We will ask you to complete a V̇O2 peak testing session, in which you will be asked to cycle on a stationary bike, increasing the intensity until you can no longer cycle. This is so that we can test your fitness level and set the intensity at the correct level when you come back for the testing sessions. This visit will take about one hour.
Visit 2-3: On each study day we will ask you to come to the research unit at 11am. You will have two drips put in, one to take blood and the other to give you glucose and insulin to target a normal BGL with normal insulin levels. You will be given sandwiches for lunch. The exercise session will start at approximately 4pm. This will involve cycling on a stationary exercise bike at 65 percent of your maximum capacity for 45 minutes. Blood will be sampled at regular time points before, during and after exercise - this helps us to adjust the glucose drip to keep your BGL at target. We will also take blood samples for hormone levels throughout the study. You will not be able to eat after you have had lunch but you can have water. After exercise on one of the study days you will be given a protein drink in the evening and on the other study day you will not receive anything to eat but can still have water. We will keep your BGLs stable using the glucose drip and you will sleep overnight in the research unit. The study will finish at 6am and after this you will be given breakfast with your normal insulin and will then be able to go home.
If you are aged between 13 and 35 years old, weigh at least 42.9kg and your HbA1c is less than 9 percent you may be eligible for this study. If you have complications of your diabetes, an injury or any other health conditions (other than Type 1 Diabetes), please advise us as you may not be able to participate in the study.
For more information or to take part, email Joanne O'Dea, Joanne.O'Dea@health.wa.gov.au. More information can also be found here.