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NCT Number: NCT04391270

A Blended Intervention to Promote Physical Activity, Health and Work Productivity Among Office Employees

The primary objective of this study is to examine between-group differences in changes of objectively measured MVPA levels (min/week) among a randomly selected sample of office employees who are physically inactive in Hong Kong.

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Key information

Conditions

Physically Well But Worried Behavior Motor Activity

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Department of Sport, Physical Education, and Health

Kowloon Tong, Hong Kong

About this study

Regular participation in moderate-to-vigorous physical activity (MVPA) is related to decreased risk of morbidity and mortality. Among working populations, lack of MVPA may also be a risk factor for absenteeism and presenteeism. Both traditional workplace-based and web-based interventions have been suggested as being effective in promoting participation MVPA, health-related outcomes, and work-related productivity. However, several challenges limit their application in real world contexts. A 'blended' intervention approach combining the two intervention strategies is proposed to overcome these limitations. The proposed intervention aims to utilize the blended approach to increase participation in MVPA, health-related outcomes, and work productivity among inactive workers.

Methods: The study will comprise of a three group cluster randomized controlled trial (cluster-RCT), comprising a three-month actual intervention and a nine-month behavioral follow-up period. The three groups will be: a web-based intervention group, a blended intervention group combining the web-based components with face-to-face workshops, and a control group. Physically inactive office employees (N = 141) from will be recruited and randomly assigned to the three groups by cluster randomization. The intervention mapping (IM) framework will be used for selecting and applying effective health behavioural theories and behavioural change techniques (BCTs) to the development, implementation and assessment of the intervention, which will be personally tailored. The primary outcome variable will be objectively measured MVPA using an accelerometer. Secondary outcomes will consist of indices of health including adiposity, blood pressure, blood sugar, blood lipids, self-reported depression, anxiety, stress, and health-related quality of life, and work-related variables including absenteeism and presenteeism.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • physically inactive (do NOT meet the WHO's recommended MVPA levels)
  • office employees in Hong Kong.

Exclusion criteria

  • participants are engaging other ongoing programs involving MVPA promotion
  • if they report any conditions preventing them from being active.

Treatment and study plan

blended intervention

Behavioral

A blended intervention group combining the web-based components with face-to-face workshops and posters

Web-Based Intervention

Behavioral

A web-based intervention only referred to the use of internet without traditional face-to-face workshops and posters

Primary outcomes

  1. moderate-to-vigorous physical activity (MVPA) levels

    Time frame: baseline, 13 weeks, 25 weeks

    examine between-group differences in changes of objectively measured MVPA levels (min/week) among a randomly selected sample of office employees who are physically inactive in Hong Kong

Secondary outcomes

  1. changes of self-report MVPA levels (min/week)

    Time frame: baseline, 13 weeks, 25 weeks

    To examine between-group differences in changes of self-reported MVPA levels (min/week) in different domains among the sample.

  2. Height in meters

    Time frame: baseline, 13 weeks, 25 weeks

    Height will be measured to the nearest 0.1 cm using a stadiometer.

  3. Weight in kilograms

    Time frame: baseline, 13 weeks, 25 weeks

    Weight will be measured to the nearest 0.1 kg on a calibrated digital balance scale (Seca, max. 200 kg, Germany) with the participants wearing lightweight clothing and no shoes.

  4. Body mass index (BMI, kg/m2)

    Time frame: baseline, 13 weeks, 25 weeks

    Body mass index (BMI, kg/m2) will be calculated from weight and height.

  5. Waist circumference (cm)

    Time frame: baseline, 13 weeks, 25 weeks

    Waist circumference (cm) will be measured midway between the lowest rib margin and the top of the iliac crest at the end of gentle expiration

  6. %Body fat

    Time frame: baseline, 13 weeks, 25 weeks

    %BF will be assessed by a Tanita TBF-410 Body Composition Analyzer (Tanita Corporation, Tokyo, Japan) using foot-to-foot bioelectrical impedance analysis (BIA).

  7. Blood pressure (mmHg)

    Time frame: baseline, 13 weeks, 25 weeks

    Blood pressure will be measured using the Omron M6 Compact (HEM-7000-E, Omron Healthcare Corporation, Kyoto, Japan) following standard measurement protocols.

  8. Hemoglobin A1C (%)

    Time frame: baseline, 13 weeks, 25 weeks

    Hemoglobin A1C will be measured using the Reflotron ® Plus system (Roche Diagnostics, F. Hoffmann-La Roche Ltd., Burgess Hill, UK).

  9. Depression, anxiety and stress

    Time frame: baseline, 13 weeks, 25 weeks

    Depression, anxiety and stress will be measured using the Chinese version of the Depression Anxiety Stress Scale (DASS-21)

  10. Presenteeism

    Time frame: baseline, 13 weeks, 25 weeks

    It will be assessed using presenteeism questions derived from the WHO's Heath and Work Performance Questionnaire (HPO).

  11. High-density lipoprotein (mmol/L)

    Time frame: baseline, 13 weeks, 25 weeks

    high-density lipoprotein will be measured using the Reflotron ® Plus system (Roche Diagnostics, F. Hoffmann-La Roche Ltd., Burgess Hill, UK).

  12. Triglyceride (mmol/L)

    Time frame: baseline, 13 weeks, 25 weeks

    Triglyceride will be measured using the Reflotron ® Plus system (Roche Diagnostics, F. Hoffmann-La Roche Ltd., Burgess Hill, UK).

Sponsors and collaborators

Lead sponsor

Hong Kong Baptist University

Other

Registry information

Official study title

A Blended Intervention to Promote Physical Activity, Health and Work Productivity Among Office Employees Using Intervention Mapping: A Study Protocol for a Randomized Controlled Trial

Important dates

Study start
2022
Primary completion
2023
Study completion
2023
First posted
May 18, 2020
Registry last updated
Mar 1, 2024

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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