Glucose and Motivation States
Impact of Blood Glucose on Motivation States: A Double-Blind Placebo-Controlled Study
1 other identifier
interventional
40
1 country
1
Brief Summary
The purpose of this study is to evaluate how motivation is impacted by exercise and beverage consumption. You will be asked to report to our lab for 5 visits each separated by 2+ days over a period of 2-3 weeks.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Oct 2025
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
October 30, 2025
CompletedFirst Submitted
Initial submission to the registry
November 19, 2025
CompletedFirst Posted
Study publicly available on registry
November 28, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 1, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
August 1, 2026
November 28, 2025
November 1, 2025
9 months
November 19, 2025
November 19, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
State Motivation to Move
Score on movement subscale of Cravings for Rest and Volitional Energy Expenditure Survey (0 is lowest, 100 is highest)
60 minutes
Secondary Outcomes (1)
State motivation to rest
60 minutes
Study Arms (4)
Exercise + sugar drink
EXPERIMENTALExercise + non-sugar drink
PLACEBO COMPARATORRest + sugar drink
ACTIVE COMPARATORRest + non-sugar drink
PLACEBO COMPARATORInterventions
Exercise 30 minutes at moderate intensity (10% below ventilatory threshold)
Consume 250mL beverage (water + 6 tablespoons table sugar)
Consume 250mL beverage (water + 1.5 teaspoons of stevia powder)
Eligibility Criteria
You may qualify if:
- 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
You may not qualify if:
- None
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University of South Florida
Tampa, Florida, 33620, United States
MeSH Terms
Interventions
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- BASIC SCIENCE
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 19, 2025
First Posted
November 28, 2025
Study Start
October 30, 2025
Primary Completion (Estimated)
August 1, 2026
Study Completion (Estimated)
August 1, 2026
Last Updated
November 28, 2025
Record last verified: 2025-11
Data Sharing
- IPD Sharing
- Will share
Individual deidentified participant data (including data dictionaries) will be shared. This includes individual participant data that underlie the results reported in any aspect of a published article (text, tables, figures, and appendices). Other documents that will be available include the study protocol, statistical analysis plan, informed consent form, and analytic code. The data will be available immediately after publication with no end date. Data will be shared with researchers who provide a methodologically sound proposal to achieve aims in the approved proposal. Proposals should be directed to Dr. Garrett Ash at Yale University (garrett.ash@yale.edu). To gain access, data requesters will need to sign a data access agreement.