Effects of caffeine intake on body composition changes in obese people with intermittent fasting

Status

Unknown

Phases

Phase 3

Study type

Interventional

Source

TCTR

Registry ID

TCTR20240403003

Enrollment

Registered

2024-04-03

Start date

2024-02-01

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Obesity Body composition, weight change, obese people, intermittent fasting, caffeine

Interventions

Intake NESCAFE Red cup 4 g, containing 146.4 mg of caffeine.,Intake NESCAFE classic decaf 4 g (no caffeine)

Active Comparator Dietary Supplement,Placebo Comparator Dietary Supplement

Caffeine,Placebo

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. Age between 18 and 60 years 2. Body mass index 25.0 kg/m2 or higher 3. Body weight stable more than 6 months

Exclusion criteria

Exclusion criteria: 1. Smoking 2. Pregnancy or lactation 3. Underlying diseases with increased metabolic rate 4. Anxiety disorder or active psychiatric disorders 5. Acute gastroesophageal reflux 6. Intake weight-affected medication 7. Intake drugs that affect caffeine metabolism 8. Caffeine allergy 9. Refuse to participate in a research

Design outcomes

Primary

Measure	Time frame
Fat mass at 8 weeks after start intervention Bioelectrical Impedence Analysis	—

Secondary

Measure	Time frame
Muscle mass at 8 weeks after start intervention Bioelectrical Impedence Analysis	—

Countries

Thailand

Contacts

Public ContactKulapong Jayanama

Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital

Kulapong.jay@mahidol.ac.th028395146

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026