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The effect of odour exposure on appetite, appetite for smelled foods and salivation, investigated for different odours

Effect of orthonasal odour exposure time on appetite, appetite for smelled foods and salivation, investigated for different odours: a cross-over study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN39512795
Enrollment
20
Registered
2013-01-31
Start date
2011-05-02
Completion date
Unknown
Last updated
2015-01-13

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

Conditions

Obesity Nutritional, Metabolic, Endocrine Obesity

Interventions

Cross-over study with 8 odour conditions: 5 food odours, 2 odours in duplo (repeated two times), two non-food odours and no-odour (duplo). Each participant completed two sessions per day, in total 12

Sponsors

Technology Foundation STW (Stichting Technische Wetenschappen) (Netherlands)
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: 1. Women aged 18-45 years 2. Healthy, based on self report 3. Body mass index (BMI) 18.5-25 kg/m2

Exclusion criteria

Exclusion criteria: 1. Smoking 2. Restrained eater 3. Lack of appetite 4. Dieting for the past 2 months 5. Change in body weight > 5 kg during last 2 months 6. Vegetarian 7. Hyper sensitivity or allergy to any food product 8. Pregnant or breast feeding during last 6 months

Design outcomes

Primary

MeasureTime frame
1. Appetite (on visual analogue scale) was filled out at baseline and 1, 5 9, 13 and 18 minutes after onset of odour exposure 2. Appetite for smelled foods (on visual analogue scale) was filled out at baseline and 1, 5 9, 13 and 18 minutes after onset of odour exposure 3. Appetite for smelled foods measured with food preference questionnaire was filled out 20 minutes after onset of odour exposure

Secondary

MeasureTime frame
Salivation at baseline and 0.5, 4, 8 and 17 minutes after onset of odour exposure

Countries

Netherlands

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026