Effects of Acute Carbohydrate Intake Intra-training in Crosstraining

Effects of Acute Carbohydrate Intake Intra-training in Crosstraining Athletes: a Randomized, Placebo-controlled Crossover Study

This study aims to investigate the effect of acute carbohydrate intake during a crosstraining session on exercise-induced muscle damage and the recovery of crosstraining athletes.

Study Overview

• Status: Completed
• Conditions: Recovery
• Intervention / Treatment: Dietary supplement: Placebo; Dietary supplement: Carbohydrates

Detailed Description

Carbohydrate intake during exercise could decrease the subjective perceived exertion and promote recovery during high-intensity and intermittent exercises such as crosstraining. Nevertheless, despite extensive research on carbohydrate ingestion during exercise across different sports disciplines, its effects have not been investigated in crosstraining sessions.

23 male trained crosstraining athletes will ingest carbohydrates (60g of maltodextrin + fructose, 2:1 ratio) or placebo during a one-and-a-half-hour crosstraining session. The session will consist of a warm-up, a weightlifting part, a strength part, a WOD, and an AMRAP. The rating of perceived exertion (RPE) will be assessed using the validated Borg scale at the beginning of the session, after each part of the training, and at the end of the session. DOMS will be assessed using a visual analog scale at 24 and 48 hours after the crosstraining session.

• Study Type: Interventional
• Enrollment (Actual): 25
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Spain
  • Granada, Spain
    • University of Granada

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Age: 18-35 years.
• Body mass index: 18.5-30 kg/m2.
• Ability to understand the instructions, objectives, and study protocol.
• Minimum of 3 years of experience in crosstraining, with at least 6 hours of weekly training over the past 3 months.
• Resident on the island of Tenerife.

Exclusion Criteria:

• History of a significant adverse cardiovascular event, renal insufficiency, cirrhosis, eating disorder, weight control surgical intervention, or type 2 diabetes mellitus.
• Any chronic condition in which the intake of nutritional supplements is not advisable.
• Any condition that, in the investigator's judgment, would impair the ability to participate in the study or represent a personal risk to the participant.
• Use of medications that may affect the study results.
• Unstable body weight for 3 months prior to the start of the study (> 4 kg loss or gain in - weight).
• Active tobacco abuse or illicit drug use, or history of treatment for alcohol abuse.
• On a special diet or prescribed for other reasons (e.g., celiac disease).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Carbohydrates; 60g of maltodextrin + fructose, 2:1 ratio	Dietary supplement: Carbohydrates; 60g of maltodextrin + fructose, 2:1 ratio
Placebo Comparator: Placebo; Preparation of colorants, sweeteners, aromas and acidulants	Dietary supplement: Placebo; Placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Exercise-induced muscle damage and recovery measured through the countermovement jump	Countermovement jump height	1 hour 30 minutes
Exercise-induced muscle damage and recovery through the DOMS scale	Delayed-onset muscle soreness (DOMS) scale (0-10 arbitrary units)	1 hour 30 minutes

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Feeling sensations	Feeling scale	1 hour 30 minutes
Capillar lactate levels	Capillar lactate levels	1 hour 30 minutes
Capilar glucose levels	Capilar glucose levels	1 hour 30 minutes
Subjective fatigue throughe the RPE scale	Rate of perceived exertion scale	1 hour 30 minutes
Performance: Weight used in the crosstraining session	Weight used in the crosstraining session	1 hour 30 minutes
Performance: Repetitions performed in the crosstraining session	Repetitions performed in the crosstraining session	1 hour 30 minutes
Performance: Rounds performed in the crosstraining session	Rounds performed in the crosstraining session	1 hour 30 minutes

Collaborators and Investigators

• Sponsor: Universidad de Granada

Study record dates

Study Major Dates

• Study Start (Actual): May 1, 2024
• Primary Completion (Actual): June 1, 2024
• Study Completion (Actual): September 1, 2024

Study Registration Dates

• First Submitted: May 21, 2024
• First Submitted That Met QC Criteria: May 27, 2024
• First Posted (Actual): June 3, 2024

Study Record Updates

• Last Update Posted (Actual): October 3, 2024
• Last Update Submitted That Met QC Criteria: October 1, 2024
• Last Verified: October 1, 2024

More Information

Terms related to this study

• Keywords: nutrition; recovery; performance; concurrent exercise; Sports drink
• Other Study ID Numbers: CROSSCARB

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No