Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The aim of this study is to investigate the effects of regular sucrose feeds compared to a single large bolus given late in exercise, on muscle glycogen utilisation, exercise capacity and other markers of metabolism during running
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Regular carbohydrate feeding | Active Comparator | Ingestion of 75 g sucrose, given in regular doses for the first 75 minutes of exercise during a time to exhaustion run |
|
| Single carbohydrate bolus | Active Comparator | Ingestion of 75 g sucrose, given in a single bolus after 75 minutes of exercise, during a time to exhaustion run |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Regular carbohydrate feeding | Other | 60 ml of water with 5 g sucrose given every 5 minutes 14 times up until 70 minutes followed by 5 g sucrose after 75 minutes in a 250 ml solution |
| Measure | Description | Time Frame |
|---|---|---|
| Muscle glycogen concentrations | Muscle glycogen concentration at rest, after 75 minutes of treadmill running and at volitional exhaustion. Measured using the bergstrom needle technique for obtaining muscle biopsy samples | Estimated to be between 90 and 145 minutes |
| Exercise capacity | Time to exhaustion at the pre-determined speed to elicit exhaustion after ~90 minutes when ingesting water only | Estimated to be between 90 and 145 minutes |
| Measure | Description | Time Frame |
|---|---|---|
| Ratings of perceived exertion | Subjective ratings of perceived exertion, during treadmill running. Measured using a borg scale of 6 to 20, where 6 = no exertion at all, and 20 = maximal exertion. | Estimated to be between 90 and 145 minutes |
| Ratings of stomach discomfort |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department for Health, University of Bath | Bath | BA2 7AY | United Kingdom |
Not provided
| ID | Term |
|---|---|
| D009043 | Motor Activity |
| ID | Term |
|---|---|
| D001519 | Behavior |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Single carbohydrate bolus | Other | 60 ml of water given every 5 minutes 14 times up until 70 minutes followed by 75 g sucrose after 75 minutes in a 250 ml solution |
|
Subjective ratings of stomach discomfort during treadmill running. Measured using a modified borg scale of 6 to 20, where 6 = no discomfort and 20 = maximal discomfort |
| Estimated to be between 90 and 145 minutes |
| Carbohydrate oxidation | Total carbohydrate oxidation during treadmill running. Measured using indirect calorimetry and reported in grams. | Estimated to be between 90 and 145 minutes |
| Fat oxidation | Total fat oxidation during treadmill running. Measured using indirect calorimetry and reported in grams. | Estimated to be between 90 and 145 minutes |
| Plasma glucose concentrations | Plasma lactate concentrations during of treadmill running. Measured using colourimetric assay and reported in mmol/L | Estimated to be between 90 and 145 minutes |
| Plasma lactate concentrations | Plasma lactate concentrations during treadmill running. Measured using colourimetric assay and reported in mmol/L. | Estimated to be between 90 and 145 minutes |
| Heart rate | Heart rate during treadmill running measured by telemetry and reported in beats per minute | Estimated to be between 90 and 145 minutes |
| Rate of oxygen consumption | Rate of oxygen consumption during treadmill running. Measured using indirect calorimetry and reported in litres per minute | Estimated to be between 90 and 145 minutes |
| Rate of carbon dioxide production | Rate of carbon dioxide production during treadmill running. Measured using indirect calorimetry and reported in litres per minute. | Estimated to be between 90 and 145 minutes |