Healthy, Healthy Nutrition
Conditions
Brief summary
The purpose of this study is to look at how fast commercially available supplements containing carbohydrates can get into the bloodstream during repeated sprint cycles. This will build from a pervious study where the investigators tested these supplements on healthy participants during a resting oral glucose tolerance trial. The investigators will be testing three supplements, namely Voom Pocket Rocket, SIS Go Isotonic Energy Gel, and Maurten Gel 160. Each participant will complete all three conditions, consuming one of each supplement at random per condition. The study requires participation from male and female runners, cyclists and triathletes who are aged between 18-40. Each visit will take approximately 1 hour, and three experimental visits per participant. The study will involve frequent blood sampling and the continuous monitoring of gas exchange (oxygen/carbon dioxide). Blood sampling via cannulation will be used to analyse the lactate, glucose, and electrolyte content of the blood. Gas exchange will measure the oxygen breathed in and carbon dioxide breathed out throughout the exercise. The investigators plan to carry out the study on 10 participants who will be a mix of male and female runners, cyclists and triathletes.
Interventions
DIETARY_SUPPLEMENT45 grams Voom Pocket Rocket Electro Energy
Participants will be required to consume 45 grams (in carbohydrates) of the Voom Pocket Rocket Electro Energy on one of the three experimental visits. Participants will have blood glucose, blood lactate, and electrolytes sampled throughout five 15-second repeated cycling intervals interspersed with 3 minutes active recovery. Gas exchange will also be monitored throughout the 1-hour study visit.
DIETARY_SUPPLEMENT45 grams Maurten Gel 160
Participants will be required to consume 45 grams (in carbohydrates) of the Maurten Gel 160 on one of the three experimental visits. Participants will have blood glucose, blood lactate, and electrolytes sampled throughout five 15-second repeated cycling intervals interspersed with 3 minutes active recovery. Gas exchange will also be monitored throughout the 1-hour study visit.
DIETARY_SUPPLEMENT45 grams SIS Go Isotonic Energy Gel
Participants will be required to consume 45 grams (in carbohydrates) of the SIS Go Isotonic Energy Gel on one of the three experimental visits. Participants will have blood glucose, blood lactate, and electrolytes sampled throughout five 15-second repeated cycling intervals interspersed with 3 minutes active recovery. Gas exchange will also be monitored throughout the 1-hour study visit.
Sponsors
Lancaster University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Investigator)
Masking description
Both the participants and investigators will be blinded to what supplement they are consuming on each visit. Each supplement will taste the same, and be placed into identical packaging, and be randomly labelled (e.g., A, B, C). This will be done to avoid potential bias.
Intervention model description
This will be a double-blind randomised crossover design. There will be 1 group of participants who will complete all three conditions at random: Condition 1 - consume Voom Pocket Rocket. Condition 2 - consume SIS Isotonic Energy Gel. Condition 3 - consume Maurten Gel 160. Participants will consume each product 35 minutes before starting exercise. All participants will undergo the same exercise - 5 repeated sprint cycling (cycling against 0.075 kg/ kg body mass) intervals of 15 seconds interspersed with 3 minutes of active recovery. All participants will have the same measures taken - blood sampling for blood glucose, blood lactate, and electrolytes at the end of each sprint and period of active recovery, and monitoring of gas exchange throughout the exercise.
Eligibility
Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* Aged between 18-40 years * Male or female * Tier 2 athletes - local level representation, training \ 3 times per week, training with a purpose to compete, identify with a specific sport, limited skill development (McKay et al., 2021)
Exclusion criteria
* Allergies to any listed ingredients on any supplements. * Diabetes (type 1 or 2) * Any medical conditions * Smokers * Any injury that would prevent them from exercising * Anyone using drugs or medication (not including contraception) * Anyone consuming alcohol within 24 hours of the study * Exercise must be restricted within 24 hours of the study * Caffeine must not be consumed within 24 hours of testing as it can significantly enhance carbohydrate oxidation rates (Yeo et al., 2005) * Diets including high-carbohydrate-low-fat (HCLF), low-carbohydrate-high-fat (LCHF), ketogenic, and/or glycogen manipulation diets (Rauch et al., 2022)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Blood Glucose | Blood glucose measures will be taken 35 minutes after consuming the supplement(s) (baseline), after the 3 minute warmup, and then after every 15 second sprint and every 3 minute period of active recovery | Frequent blood sampling for blood glucose (1ml after every stage of both sprint cycling and active recovery) followed by analysis in the Biosen Analyser |
| Blood Lactate | Blood lactate measures will be taken 35 minutes after consuming the supplement(s) (baseline), after the 3 minute warmup, and then after every 15 second sprint and every 3 minute period of active recovery | Frequent blood sampling for blood lactate (1ml after every stage of both sprint cycling and active recovery) followed by analysis in the Biosen Analyser |
| Gas Exchange | Gas exchange will be measured continuously throughout the 20 minutes of exercise, starting at the warmup | Gas exchange measured throughout each 20 minute exercise via a Cortex Metalyzer |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Blood electrolyte content | Blood electrolyte measures will be taken 35 minutes after consuming the supplement(s) (baseline), after the 3 minute warmup, and then after every 15 second sprint and every 3 minute period of active recovery | Frequent blood sampling for electrolyte concentrations of the blood (sodium, potassium, chloride, calcium) (1ml after every stage of both sprint cycling and active recovery) followed by analysis in the Biosen Analyser |
| Rate of Percieved exertion (RPE) | RPE will be measured at the end of the warmup and the end of the final sprint stage | Participants will report their RPE using the Borg Scale to report how hard they are finding the exercise. This will be done after the warm-up and after the final sprint. |
| Gastrointestinal (GI) Discomfort Questionnaire | GI Discomfort will be measured 5 minutes before and 5 minutes after exercise | Participants will complete a GI discomfort questionnaire 5 minutes before starting exercise and at the end of exercise |
Countries
United Kingdom
Outcome results
None listed