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The effects of variations in macronutrient composition on biomarkers

The effects of variations in macronutrient composition on biomarkers - The effects of variations in macronutrient composition on biomarkers

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000055667
Enrollment
18
Registered
2024-09-29
Start date
2024-09-29
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy young adult males

Interventions

The participants alternate between low-carb and low-fat days for six days. The combination of the low-carb and low-fat days results in a nutritionally balanced diet based on the Dietary Reference Inta

Sponsors

Fukuoka University
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: 23.5<BMI<30 Willing and able to consume the provided foods and beverages

Exclusion criteria

Exclusion criteria: Individuals taking regular medications that affect metabolism (e.g., diabetes treatments, alpha-blockers, beta-blockers). Individuals with diseases that affect metabolism (e.g., diabetes, thyroid disorders). Individuals diagnosed with or having a history of mental illness. Individuals using implanted medical devices such as pacemakers. Individuals with severe cardiovascular disease. Individuals with cancer. Individuals with oral or dental diseases, or those undergoing oral or dental treatment. Individuals with a history of gastrointestinal surgery (primarily involving the esophagus, stomach, duodenum, small intestine, colon, or liver; appendectomy is allowed). Individuals with gastrointestinal diseases. Individuals with knee or back conditions that interfere with daily life. Individuals with extremely irregular eating habits (e.g., frequent skipping of meals, picky eating, frequent snacking, or noticeable irregularities in meal times). Individuals participating in or planning to participate in other studies involving the consumption of food, medication intake, or the application of cosmetics or medications. Individuals with an exercise habit (those exercising for 60 minutes or more per day, at least four days per week). Individuals engaged in heavy physical labor in daily life or planning to do so during the study period (such as physically demanding work, prolonged walking, or standing activities). Individuals who regularly consume excessive alcohol (more than 60g of pure alcohol per day) or tobacco, and who cannot abstain from smoking or drinking for three days prior to the testing days during the study period. Individuals with claustrophobia or a subjective fear of confined spaces. Individuals with food allergies. Other individuals deemed unsuitable by the principal investigator (Yoshinari Uehara, Fukuoka University) for the safe execution of this study.

Design outcomes

Primary

MeasureTime frame
Metabolic flexibility

Secondary

MeasureTime frame
24-hour blood glucose level urinary metabolome physical activity appetite gut microbiota

Countries

Japan

Contacts

Public ContactYoichi Hatamoto

National Institute of Health and Nutrition National Institutes of Biomedical Innovation, Department of Nutrition and metabolism

yhatamoto@nibiohn.go.jp06-6384-1120

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026