An interventional study of Actigraphy watch intervention in Weight Change, sponsored by KK Women's and Children's Hospital. Completed at 1 site in Singapore. Open to female participants aged 21 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-09-15.
Sponsored by KK Women's and Children's Hospital · Not applicable, Interventional, and Supportive care
The aim of this study is to examine the effect of walking exercise in postpartum women and to evaluate the weight management intervention by using step tracker. The following hypotheses will be tested:
Postpartum is an important phase in the reproductive years of women. Weight retention after childbirth can lead to chronic diseases (CD), including obesity, cardiovascular disease and other metabolic related diseases such as diabetes or high blood pressure. There are some studies suggesting that pedometer is useful to encourage women in increasing their physical activity.
We propose to evaluate the effects of physical activity intervention based on wearable steps tracker and optimal weight loss for postpartum women. It will be a pilot stratified randomized intervention study on 200 postpartum women at KK Women's and Children's Hospital. Women who are above 21 years old and had given birth between 6 weeks and 6 months before will be recruited under the study. Postpartum women who physically fit to participate in moderate intensity walking are eligible to participate in the study. Women who participated in other weight management or physical activity intervention projects will be excluded from the study. Study enrolment will be done at the Specialist Outpatient Clinics for postnatal check-ups.
This was 12-16 weeks randomized, single-center, unblinded intervention study (Figure 1). Participants were allocated in a 1:1 ratio to either the intervention group (Actigraphy watch) or the control group (no Actigraphy watch). All participants received the standard routine postpartum care, physical activity counselling with advice on walking and motivational messages. Randomization was done using sealed envelopes. Eligible participants had baseline measurements taken during the study enrolment and consent taking where anthropometric measurements, and blood samples were collected and various questionnaires were filled out to assess baseline demographics and lifestyle characteristics.
All the participants in the intervention group received an Actigraphy watch to wear all the time except for swimming and showering. Walking advises and motivational text messages will be sent to the study participants by the research team.
Data will be collected through questionnaires and clinical measurements. The questionnaires include socio-economic factors, and self-reported physical activity. Bio-physical measurements will be obtained from anthropometric measurements of participants, are collected from the participants at their follow-up time points. Objective physical activity will be collected using an Actigraphy watch.
231 studies on the registry are indexed under Body Weight Changes; 30 are open to participants now.
This study's enrollment of 49 is below the median of 80 across 179 interventional studies indexed under Body Weight Changes.
Browse Body Weight Changes studies →KK Women's and Children's Hospital is the lead sponsor of 137 studies on the registry; 33 are open to participants now.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
All the participants in the intervention group received an Actigraphy watch to wear all the time except for swimming and showering. Walking advises and motivational text messages will be sent to the study participants by the research team.
Device: Actigraphy watch intervention
Walking advises and motivational text messages will be sent to the study participants by the research team.
Participants in this group only will be given an Actigraphy watch to track their physical activity levels.
Weight change at the end of the intervention at 10 weeks postpartum
Using measured weight in kgs
Time frame: At 8-12 weeks postpartum from baseline (4-8 weeks postpartum)
Weight change at the end of the intervention at 14 weeks postpartum
Using measured weight in kgs
Time frame: At 12 to 16 weeks postpartum from baseline ( 4-8 weeks postpartum)
Change in body mass index measures from baseline, 10 weeks postpartum and 14 weeks postpartum
Calculating body mass index (kg/m2) using height (m) and weight (kg) measures
Time frame: Baseline (4-8 weeks postpartum), 10 weeks postpartum ( 8-12 weeks postpartum) and 14 weeks postpartum (12-16 weeks postpartum)
Change in waist circumference measures from baseline, 10 weeks postpartum and 14 weeks postpartum
Using waist circumference measures in cm
Time frame: Baseline (4-8 weeks postpartum), 10 weeks (8-12 weeks postpartum) and 14 weeks (12-16 weeks postpartum)
Change in waist to hip ratio from baseline, 10 weeks and 14 weeks postpartum
Using waist circumference and hip measures
Time frame: Baseline 6 weeks postpartum (4-8 weeks postpartum), 10 weeks postpartum (8-12 weeks postpartum) and 14 weeks postpartum (12-16 weeks postpartum).
Change in body fat mass from baseline, 10 and 14 weeks postpartum
Using body fat mass percentage measured using the bioelectrical impedance analysis scale
Time frame: Baseline, 10 weeks postpartum (8-12 weeks postpartum) and 14 weeks (12-16 weeks postpartum)
Change in fasting lipid profile from baseline, 10 weeks and 14 weeks postpartum
Using fasting lipid profiles (total cholesterol, Low-density lipoprotein (LDL) cholesterol, High-density lipoprotein (HDL) cholesterol, triglycerides) of blood samples in mmol/L
Time frame: Baseline, 10 weeks (8-12 week postpartum) and 14 weeks (12-16 weeks postpartum)
Change in glucose homeostasis markers from baseline at 10 weeks and 14 weeks postpartum
Using fasting glucose and fasting insulin from blood samples in mmol/L
Time frame: Baseline, 10 weeks (8-12 weeks postpartum), and 14 weeks (12-16 weeks postpartum)
Change in blood pressure from baseline at 10 weeks and 14 weeks postpartum
Using measured systolic and diastolic blood pressure in mm/Hg
Time frame: At baseline, 10 weeks (8-12 weeks postpartum) and 14 weeks (12-16 weeks postpartum)
Change in self-reported frequency of moderate to vigorous physical activity at baseline, 10 weeks and 14 weeks
Self-reported data from the International Physical Activity Questionnaire (IPAQ) to assess frequency of moderate to vigorous physical activity.
Time frame: At baseline, 10 weeks (8-12 weeks postpartum) and 14 weeks (12-16 weeks postpartum).
Change in self-reported duration of moderate to vigorous physical activity at baseline, 10 weeks and 14 weeks
Self-reported data from the International Physical Activity Questionnaire (IPAQ) to assess duration of moderate to vigorous physical activity..
Time frame: At baseline, 10 weeks (8-12 weeks postpartum) and 14 weeks (12-16 weeks postpartum).
Change in duration of objective moderate to vigorous physical activity at baseline, 10 weeks and 14 weeks
MVPA will be assessed using an Actigraphy accelerometer Duration: Average daily/weekly minutes of MVPA (minutes per week).
Time frame: Baseline, 10 weeks postpartum (8-12 weeks postpartum) and 14 weeks (12-16 weeks).
Change in frequency of objective moderate to vigorous physical activity at baseline, 10 weeks and 14 weeks
MVPA will be assessed using an Actigraphy accelerometer Frequency: Number of days per week with ≥30 minutes of MVPA (days per week).
Time frame: Baseline, 10 weeks postpartum (8-12 weeks postpartum) and 14 weeks (12-16 weeks).
PDFs hosted by the registry, ClinicalTrials.gov.
Plan to share: No — The IPD will not be shared due to privacy concerns and the potential risk of re-identification, especially in a small sample size or a highly specific population
This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.
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