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NCT Number: NCT05400187

Body Composition Assessment and Smart-phone Based Counselling on Healthy Eating and Weight Management

This study proposed an integrated multi-disciplinary approach including a professional and convenient body composition measurement and an immediate counselling after the measurement, followed by 6-month smart-phone based individualized counselling. We believe that this approach will promote healthy eating behaviors and weight management among middle-aged Chinese in Hong Kong.

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Key information

Conditions

Weight Management Healthy Diet

Age range

45 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

The Hong Kong Polytechnic University

Hung Hom, Hong Kong

About this study

This is a two-arm, individual level, 6-month randomized controlled trial. The intervention group will receive convenient body composition measurement and 6-month smart-phone based individualized counselling. No specific intervention will be given to the control group except the common anthropometric and body composition measurement. A pretest-posttest evaluation and between-group comparison will be used to test whether the impact/success of the project has been achieved.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Able to understand Cantonese and read Chinese;
  • Self-reported vegetable and fruit consumption is less than 5 servings per day (one serving means 125 mL (½ cup) fresh, frozen or canned fruits or vegetables; or 250 mL (1 cup) raw leafy veggies or salad; or 125 mL (½ cup) 100% juice; or 1 fruit;
  • Reachable by smart-phone and familiar with the use of smart-phone;
  • Would not move from the local area during the study period.

Exclusion criteria

  • Self-reported history of cardiovascular and pulmonary diseases, neurological disorder, musculo-skeletal disorder, osteoarthritis, and eating disorder;
  • Receiving medically prescribed diet or physical activity intervention;
  • For women, currently pregnant;
  • Have been taking any medications or long-term supplement such as herbs;
  • Cannot provide written informed consent.

Treatment and study plan

Body composition assessment and smart-phone based counselling

Behavioral

As for the body composition assessment, body fat and muscle thickness, body fat percentage and distribution will be measured and a brief face-to-face counseling soon after the measurement will be implemented to the participants. Body assessment were measured by the InBody 270 (Biospace, Seoul, Korea) device, which provides a convenient way of accurate body fat measurement comparable with those obtained using air displacement plethysmography (ADP) (about 90% precision).

As for the Whatsapp-based counselling and communication session, qualitative dietary counselling will be offered every two weeks through the Whatsapp. One session contains 15 minutes, including the topics like making a balanced diet (55 % glucose, 30 % lipids and 15 % proteins), diversifying food intake, dietary advices and recommendations in healthy eating behaviors (e.g., eat slowly, eat at a regular time, avoid to skip a meal, drink at least 1.5 L of water each day).

Primary outcomes

  1. The difference of the weight management belief

    Time frame: From baseline to 6 months after randomization

    Four items from belief domain of Chinese weight management scales (WMS) was used to measure the participants' belief of self weight management . Each item is measured by 3- or 4-point Likert scale. The total score change from 4 to 15 with higher scores indicating better weight management belief.

  2. The difference of the weight management knowledge

    Time frame: From baseline to 6 months after randomization

    The knowledge of weight management was measured by 13 items from the general nutrition knowledge questionnaire (GNKQ). Each item carries one point for a correct answer and the maximum score is 13. A higher score shows better weight management knowledge.

Secondary outcomes

  1. The difference of health eating behavior

    Time frame: From baseline to 6 months after randomization

    Respondents' food knowledge and behavior were obtained through the food behavior questionnaire (FBQ). The FBQ is a questionnaire with 18 questions querying respondents' behaviors and knowledge about various areas of food and diet-related health such as nutrition label reading behaviors, knowledge of diet/disease relationships and some meal consumption patterns.

  2. Weight

    Time frame: From baseline to 6 months after randomization

    Weight in kg.

  3. Body mass index (BMI)

    Time frame: From baseline to 6 months after randomization

    BMI in kg/m^2

  4. Waist circumference

    Time frame: From baseline to 6 months after randomization

    Waist in cm

  5. Hip circumference

    Time frame: From baseline to 6 months after randomization

    Hip in cm

  6. Thigh circumference

    Time frame: From baseline to 6 months after randomization

    Thigh in cm

  7. Systolic blood pressure

    Time frame: From baseline to 6 months after randomization

    Systolic blood pressure in mmHg

  8. Diastolic blood pressure

    Time frame: From baseline to 6 months after randomization

    Diastolic blood pressure in mmHg

  9. Body fat percentage

    Time frame: From baseline to 6 months after randomization

    Body fat percentage was measured by a professional body composition analyzer named InBody 270 in %.

  10. Body fat mass

    Time frame: From baseline to 6 months after randomization

    Body fat mass was measured by a professional body composition analyzer named InBody 270 in kg.

Sponsors and collaborators

Lead sponsor

The Hong Kong Polytechnic University

Other

Registry information

Official study title

The Effectiveness on Healthy Eating and Weight Management by Body Composition Assessment and Smart-phone Based Counselling Among Middle-aged Hong Kong Chinese: A 6-month Randomized Controlled Trial

Important dates

Study start
2022
Primary completion
2022
Study completion
2022
First posted
Jun 1, 2022
Registry last updated
Apr 8, 2025

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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