Effects of a Pre-Workout on Performance, Perceptual Responses, Energy Feelings and Muscular Properties, After a Training Microcycle in Adults.

University of Greenwich

Status: Completed

Conditions: Protein Deficiency; Psychological; Training Group, Sensitivity; Fatigue; Muscular Atrophy

Treatments: Other: Resistance Training; Dietary Supplement: Pre-Workout Supplement; Other: Endurance Training

Study type: Interventional

Funder types: Other

Identifiers

NCT04147741

UGreenwich

Details and patient eligibility

About

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.

Full 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.

Enrollment: 16 patients

Sex: All

Ages: 45 to 70 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Healthy (no current injuries).
• Between 45 and 70 years old.
• Active.

Exclusion criteria

• Injuries.
• Never trained before.
• Under 45 or over 70 years old.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Quadruple Blind

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16 participants in 2 patient groups, including a placebo group

Pre-Workout Supplement

Experimental group

Description:

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.

Treatment:

Dietary Supplement: Pre-Workout Supplement

Other: Resistance Training

Other: Endurance Training

Maltodextrin Supplement

Placebo Comparator group

Description:

A isoenergetic Maltodextrin supplement will be administered as placebo. With 250 ml of water.

Treatment:

Dietary Supplement: Pre-Workout Supplement

Other: Resistance Training

Other: Endurance Training