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Active, not recruitingNCT06126679HCOSUpdated Nov 13, 2023

Hyvinkää Childhood Obesity Study (HCOS), Randomized Controlled Clinical Trial for Effectiveness and Costs of a 1-year Lifestyle Intervention.

An interventional study of 1-year dietary and physical activity intervention of childhood obesity in Childhood Obesity, sponsored by Helsinki University Central Hospital. Active, not recruiting at 1 site in Finland. Open to participants aged 6 Years to 12 Years. Per ClinicalTrials.gov, last updated 2023-11-13.

Sponsored by Helsinki University Central Hospital · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Dec 2023, 2 years 10 months ago, but the record still lists the study as active, not recruiting.
  • Registered 4 years 9 months after the study started (first participant enrolled Jan 2019, registered Oct 2023).
Phase
Not applicable
Study type
Interventional
Enrollment
80
Allocation
Randomized
Ages
6 Years to 12 Years
Sex
All
01

Study summary

The aim of this study is to evaluate the effects of lifestyle intervention on the management of childhood overweight and to explore the factors that contribute to the outcome, as well as the costs for the health care system. The hypotheses of the study are that lifestyle intervention is efficient in reducing BMI-SDS and thus effective in preventing overweight to progress to obesity, and it is also cost effective.

The research is necessary for the development of overweight treatment, and try to find out the optimal duration and intensity for the treatment and content useful for clinical work.

Read the detailed description

Methods and analyses: The aim of this study is to recruit 80 children and to randomize them either to an intervention group or a control group with standard care. Intervention group receive intensive, family-based diet and physical activity counseling, deliver by a multidisciplinary team of a pediatrician, a nurse and a clinical nutritionist. Control group do not receive any lifestyle intervention during the study. The inclusion criteria are weight-for-height ≥+40% or ≥+30% and increasing and age of 6-12 years. All participants fill out the study questionnaires and plasma samples are taken at baseline and at 12 months. Outcome variables will be compared between intervention and control groups.

02

Conditions studied

  • Childhood Obesity
03

In context

Obesity

6,296 studies on the registry are indexed under Obesity; 1,692 are open to participants now.

This study's planned enrollment of 80 is close to the median of 78 across 4,878 interventional studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

Helsinki University Central Hospital is the lead sponsor of 299 studies on the registry; 60 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
6 Years to 12 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

weight for height at least + 40 % or ≥ 30 % and it is rising

Exclusion criteria

Exclusion Criteria:

Clinical diagnosis of endocrine or mental diseases.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
80 participants (estimated)

Study arms

  • Experimental
    intervention group

    The 1-year lifestyle intervention includes intensive, family-based diet and physical activity counselling. The multidisciplinary team consists of one pediatrician, one specialist nurse and a clinical nutritionist. Children with their parents meet the pediatrician two times, the specialist nurse five times and the clinical nutritionist three times during the 1-year intervention. One of the meetings with the clinical nutritionist is only for parents and the child is with the nurse at the same time. The treatment is based on educational and behavioural counselling and motivating the participants to change their lifestyle and to support the parents in managing their children´s behaviour. The aim of counselling is to increase awareness of healthy dietary and physical activity habits; to achieve a suitable energy balance, to create a positive attitude to physical activity, to promote optimal sleep duration and to improve the children´s body image and body control.

    Procedure: 1-year dietary and physical activity intervention of childhood obesity

  • No intervention
    control group

    Participants in the control group continue with the standard care in primary care and do not receive any special lifestyle intervention during the study.

Interventions

  • Procedure1-year dietary and physical activity intervention of childhood obesity

    The 1-year lifestyle intervention includes intensive, family-based diet and physical activity counselling. Children with their parents meet the pediatrician two times, the specialist nurse five times and the clinical nutritionist three times during the 1-year intervention. One of the meetings with the clinical nutritionist is only for parents and the child is with the nurse at the same time. The participants in the intervention group are advised and motivated to increase their regular daily physical activity and to reduce sedentary habits. They have one group session for the training in the gymnasium with physical education instructor. The physical education instructor gives a voluntary lecture for parents about increasing physical activity and reducing sedentary time.

06

What researchers measure

Primary outcomes

  1. To investigate the efficacy of the intervention for the ISO-BMI

    How much ISO-BMI change during the intervention (kg/m2)

    Time frame: 12 months

  2. The costs of the intervention for the health care system

    Investigators calculate the costs (euros) of the intervention (the price of research visits, laboratory tests, the salary of emplyees and the cost of research rooms).

    Time frame: 12 months

07

Study locations

1 site
  • Helsinki University Hospital, Non-operative Services, Internal Medicine and Rehabilitation, Clinical Nutrition Hyvinkää Hospital
    Hyvinkää, Uusimaa 05850, Finland
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 13, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06126679
Lead sponsor
Helsinki University Central Hospital
Responsible party
Anni Martikainen (clinical nutritionist, Helsinki University Central Hospital) — Principal investigator
First posted
Nov 13, 2023
Start date
Jan 2, 2019
Primary completion
Dec 1, 2023 (estimated)
Completion
Dec 1, 2024 (estimated)
Last update
Nov 13, 2023

Study contacts

Anni Martikainen
principal investigator · Helsinki University Central Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

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