Carbohydrate Rinsing and Caffeine Gum on Performance of Romanian Deadlifts Performance

Carbohydrate Mouth Rinses and Caffeine Gum Increase the Romanian Deadlift Performance on the Flywheel Training Device: A Randomised, Cross-Over Study

Two experiments were completed to investigate the effects of carbohydrate mouth rinsing and caffeine gum chewing on inertial resistance exercise performance. It was found that both carbohydrate gargling and caffeine gum chewing could improve inertial resistance exercise performance.

Study Overview

• Status: Completed
• Conditions: Caffeine; Carbohydrate
• Intervention / Treatment: Other: Carbohydrate mouth rinsing; Other: 200 mg caffeine gum

Detailed Description

This study compared the effects of mouth rinsing with carbohydrates trial (CMR) or a placebo trial (PL) on inertial weight training performance with an inertial weight resistance device. The participants were recruited in this study. Participants were randomly allocated to the CMR and PL groups and subjected to a crossover experiment in which they performed maximum inertial resistance training comprising five sets of six reps, with 3-min rests between sets. After deducting the first repetition of each sets, the mean values from the five sets were analyzed.

• Study Type: Interventional
• Enrollment (Actual): 20
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Taiwan
  • Taichung, Taiwan, 404
    • National Taiwan University of Sport

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

1. regular weight training habits,
2. familiarity with Romanian deadlift movements
3. no chronic diseases such as hypertension, diabetes, and kidney disease or sports injuries such as lacerated knee ligaments, inflammation and rupture of tendons, strained biceps femoris or quadriceps, and strained biceps within the 6 months prior.

Exclusion Criteria:

1. did not have regular exercise habits,
2. were unfamiliar with Romanian deadlift movements
3. had certain health problems that prevented them from performing exercise or injury from which they had not recovered for more than 6 months were excluded.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Carbohydrate mouth rinsing; Rinsing mineral water for 20 seconds	Other: Carbohydrate mouth rinsing; the carbohydrate solution was prepared by dissolving 6.4 g of colorless and odorless maltodextrin in 93.6 mL of water; the mixtures were then adjusted to a 6.4% maltodextrin solution for the participants to rinse their mouths for 20 seconds
Experimental: caffeine gum; placebo gum chewing for 10 min	Other: 200 mg caffeine gum; Chewing caffeinated gum for 20 minutes

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
average power performance of Romanian deadlifts on flywheel training device	average power (watt)	immediately after intervention
concentric peak power performance of Romanian deadlifts on flywheel training device	concentric peak power (watt)	immediately after intervention
eccentric peak power performance of Romanian deadlifts on flywheel training device	eccentric peak power (watt)	immediately after intervention

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
peak overload performance of Romanian deadlifts on flywheel training device	peak overload (%)	immediately after intervention
average force performance of Romanian deadlifts on flywheel training device	average force (N)	immediately after intervention

Collaborators and Investigators

• Sponsor: National Taiwan Sport University
• Investigators: Study Director: ChihHui Chiu, PhD, National Taiwan University of Sport

Study record dates

Study Major Dates

• Study Start (Actual): March 18, 2022
• Primary Completion (Actual): March 18, 2022
• Study Completion (Actual): October 21, 2022

Study Registration Dates

• First Submitted: March 24, 2023
• First Submitted That Met QC Criteria: June 8, 2023
• First Posted (Actual): June 12, 2023

Study Record Updates

• Last Update Posted (Actual): June 12, 2023
• Last Update Submitted That Met QC Criteria: June 8, 2023
• Last Verified: June 1, 2023

More Information

Terms related to this study

• Keywords: Eccentric exercise
• Additional Relevant MeSH Terms: Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Enzyme Inhibitors; Purinergic Antagonists; Purinergic Agents; Phosphodiesterase Inhibitors; Purinergic P1 Receptor Antagonists; Central Nervous System Stimulants; Caffeine
• Other Study ID Numbers: 111-2

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: Only the researcher can see the data

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No