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OpenTrials
Completed

NCT Number: NCT07255183

Glucose and Motivation States

The purpose of this study is to evaluate how motivation is impacted by exercise and beverage consumption. Participants will be asked to report to the lab for 5 visits each separated by 2+ days over a period of 2-3 weeks.

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Key information

Conditions

Motivation

Age range

18 year–45 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of South Florida

Tampa, Florida, 33620, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Body mass index 18-30 m/kg^2
  • Health Status: generally healthy; no cardiopulmonary/metabolic/orthopedic disease or limitations
  • Blood Pressure: excluded with SBP of 130+ mmHg or DBP of 80+ mmHg
  • Glucose Status: excluded and instructed to seek medical consultation if fasting values are <70 mg/dl or >125 mg/dl; included but encouraged to seek medical consultation if fasting values are 100-125 mg/dl

Exclusion criteria

  • None

Treatment and study plan

Exercise

Behavioral

Exercise 30 minutes at moderate intensity (10% below ventilatory threshold)

Sugar Drink

Dietary Supplement

Consume 250mL beverage (water + 6 tablespoons table sugar)

Non-sugar beverage

Dietary Supplement

Consume 250mL beverage (water + 1.5 teaspoons of stevia powder)

Primary outcomes

  1. State Motivation to Move

    Time frame: 60 minutes after the baseline reading

    Score on movement subscale of Cravings for Rest and Volitional Energy Expenditure Survey (0 is lowest, 100 is highest)

Secondary outcomes

  1. State motivation to rest

    Time frame: 60 minutes after the baseline reading

    Score on rest subscale of Cravings for Rest and Volitional Energy Expenditure Survey (0 is lowest, 100 is highest)

Sponsors and collaborators

Lead sponsor

University of South Florida

Other

Registry information

Official study title

Impact of Blood Glucose on Motivation States: A Double-Blind Placebo-Controlled Study

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Nov 28, 2025
Registry last updated
Aug 27, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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