Effects of a Pre-Workout on Performance, Perceptual Responses, Energy Feelings and Muscular Properties, After a Training Microcycle in Adults.
- Conditions
- Training Group, SensitivityProtein DeficiencyMuscular AtrophyFatiguePsychological
- Interventions
- Dietary Supplement: Pre-Workout SupplementOther: Resistance TrainingOther: Endurance Training
- Registration Number
- NCT04147741
- Lead Sponsor
- University of Greenwich
- Brief Summary
The investigation will be conducted as a double blinded, randomized, crossover within-participant comparison design with two 1-week intervention periods separated by 2-weeks for wash out, recovery, period.
- Detailed Description
Following inclusion, familiarization and baseline assessments, the participants will be randomly allocated to receive either a multi-ingredient, pre-workout supplement (PREW) or maltodextrin (CHO). Thereafter, the participants will take a 5-day microcycle, involving three resistance training sessions (Monday, Wednesday and Friday) intercalated with two endurance training sessions (Tuesday and Thursday). After the first interventional microcycle, and the 2-week washout period, the participants will switch to the other nutritional condition for continuation with the second 5-day identical microcycle. Assessments of muscle contractile properties via Tensiomyography on Vastus Medialis, Biceps Femoris Long Head and Anterior Deltoids will be taken before and after each resistance training session. Measurements of strength (Isometric Mid Thigh Pull) upper and lower body muscular power (Medicine Ball Throw and Vertical Jump) will be performed immediately after each resistance training workout. The supplements will be ingested 15 min before each training session, just before completing an energy feeling questionnaire. In addition, the perceptual response to training will be assessed during and 20 min after the completion of all workouts. The contribution of carbohydrate and fat metabolism will be estimated using a gas analyzer via the calculation of respiratory exchange ratio the (RER) during each endurance training session.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 16
- Healthy (no current injuries).
- Between 45 and 70 years old.
- Active.
- Injuries.
- Never trained before.
- Under 45 or over 70 years old.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- CROSSOVER
- Arm && Interventions
Group Intervention Description Maltodextrin Supplement Pre-Workout Supplement A isoenergetic Maltodextrin supplement will be administered as placebo. With 250 ml of water. Pre-Workout Supplement Pre-Workout Supplement A 60 g dose of a commercially available pre-workout supplement providing 159 kcal including carbohydrates 15 g, essential amino acids 12 g, citrulline 3.5 g, Arginine, 3.5 g Taurine 1 g, L-Tyrosine 1 g, yerba mate 0.3 g and caffeine 0.4 g. With 250 ml of water. Pre-Workout Supplement Endurance Training A 60 g dose of a commercially available pre-workout supplement providing 159 kcal including carbohydrates 15 g, essential amino acids 12 g, citrulline 3.5 g, Arginine, 3.5 g Taurine 1 g, L-Tyrosine 1 g, yerba mate 0.3 g and caffeine 0.4 g. With 250 ml of water. Pre-Workout Supplement Resistance Training A 60 g dose of a commercially available pre-workout supplement providing 159 kcal including carbohydrates 15 g, essential amino acids 12 g, citrulline 3.5 g, Arginine, 3.5 g Taurine 1 g, L-Tyrosine 1 g, yerba mate 0.3 g and caffeine 0.4 g. With 250 ml of water. Maltodextrin Supplement Endurance Training A isoenergetic Maltodextrin supplement will be administered as placebo. With 250 ml of water. Maltodextrin Supplement Resistance Training A isoenergetic Maltodextrin supplement will be administered as placebo. With 250 ml of water.
- Primary Outcome Measures
Name Time Method Tensiomyography Changes from 10 minutes Previous to post 1 hour after the completion of each workout session Fatigue and contractility assessment via Tensiomyography will be assessed in Biceps Femoris Long Head, Vastus Medialis, and Anterior Deltoid.
Maximal Mid-Thigh Pull Isometrical Strength Changes from 10 minutes Previous to post 1 hour after the completion of each resistance training workout session Maximal Strength (measured in kilograms).
Over Head Medicine Ball Throw Changes from 10 minutes Previous to post 1 hour after the completion of each resistance training workout session Medicine Ball Throw (measured in meters and centimeters).
Self Perceived Energy Feeling Before every Training Session and up to 1 week of training. All participants will fill a short questionnaire (from 1 to 5 points) about their perception of energy before every training.
Energy Feeling will be assessed (Evergy level, Fatigue Level, Feeling of Alertness, and Feeling of Focus for the task, valued from 1 = low energy to 5 = high energy).Vertical Jump Changes from 10 minutes Previous to post 1 hour after the completion of each resistance training workout session Flight Time (measured in seconds).
- Secondary Outcome Measures
Name Time Method Whole Body Perceptual Response during Resistance Training Differences between first week and second week of training. Self Rate of Perceived Exertion (RPE) will be assessed via OMNI RES Scale (0-10 values) during resistance training (after every circuit) and 15-20 minutes after finishing each session.
Perception of Effort during Endurance Training. Differences between first week and second week of training Borg Scale (6-20) will be used to collect the perception of effort during endurance training (every 5 minutes) and 15-20 minutes after each session.
Trial Locations
- Locations (1)
University of Greenwich, Avery Hill Campus, Sparrows Farm. Avery Hill, London., United Kingdom, SE9 2BT
🇬🇧London, Avery Hill, London., United Kingdom