HemFitBit, an Observational Study of Physical Activity in People With Moderate and Severe Haemophilia A
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ClinicalTrials.gov Identifier: NCT04181697 |
Recruitment Status :
Completed
First Posted : November 29, 2019
Last Update Posted : November 30, 2020
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Condition or disease | Intervention/treatment |
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Hemophilia A Without Inhibitor | Device: PA measurement with Fitbit Charge 3 Device: PA measurement with Fitbit and ActiGraph GT3X |
Study Type : | Observational |
Actual Enrollment : | 40 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | The HemFitBit-study: Defining Normal Physical Activity in Haemophilia A |
Actual Study Start Date : | November 5, 2019 |
Actual Primary Completion Date : | August 27, 2020 |
Actual Study Completion Date : | August 27, 2020 |

Group/Cohort | Intervention/treatment |
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PwH A
People with Haemophilia (PwH) A, moderate or severe.
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Device: PA measurement with Fitbit Charge 3
Measurement of PA with Fitbit for all participants and controls. Device: PA measurement with Fitbit and ActiGraph GT3X Measurement of PA with ActiGraph for a subgroup of 20 participants. |
Controls
Demographically and seasonally matched non-haemophilia controls.
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Device: PA measurement with Fitbit Charge 3
Measurement of PA with Fitbit for all participants and controls. |
- Physical Activity (PA) volume [ Time Frame: 9 months ]PA volume in different intensities
- Fulfilment of PA recommendations [ Time Frame: 9 months ]Fulfilment of international PA recommendations
- Trend in PA over time [ Time Frame: 9 months ]Trend in PA and sedentary time over the study period
- Physical activity types [ Time Frame: 9 months ]Self reported types of PA
- Impact of haemophilia on daily life [ Time Frame: 9 months ]Work and Classroom Productivity and Activity Impairment (WPAI+CIQ:HS)
- Health Related Quality of Life [ Time Frame: 9 months ]EuroQol 5Domains 3Levels (EQ-5D-3L) Health status is measured in terms of five dimensions (5D); mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. The respondents self-rate their level of severity for each dimension using a three-level scale, and evaluate their overall health status using a Visual analogue scale (VAS) where the bottom rate (0) corresponds to " the worst health you can imagine", and the highest rate (100) corresponds to "the best health you can imagine".
- Joint score [ Time Frame: 9 months ]Hemophilia Joint Health Score (HJHS 2.1) The Hemophilia Joint Health Score (HJHS) is a validated outcome tool developed for the assessment of joint health in people with hemophilia. The ordinal joint score assesses 9 items in 6 index joints (elbows, knees and ankles). It assesses swelling, duration of swelling, muscle atrophy, crepitus of motion, range of motion (extension and flexion loss), joint pain, strength, and gait. The summation of the 9 HJHS items in 6 index joints provides users with a relative indicator of joint health, with a lower HJHS representing superior joint health.
- Ultrasound joint score [ Time Frame: 9 months ]Hemophilia Early Arthropathy Detection using Ultrasound (HEAD-US) The ultrasound protocal evaluates the six joints most typically affected in PwH: the elbows, knees, and ankles, in one single examination, providing information about synovium, cartilage, and subchondral bone. Scores for each joint can range between 0 and 8, with higher scores indicating more severe abnormalities.

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Ages Eligible for Study: | 13 Years to 30 Years (Child, Adult) |
Sexes Eligible for Study: | Male |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- moderate or severe haemophilia A
- no inhibitor
- on continuous prophylaxis
Exclusion Criteria:
- current inhibitor

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04181697
Norway | |
Oslo University Hospital | |
Oslo, Norway |
Responsible Party: | Pål Andre Holme, MD, PhD, Professor of Haematology, Oslo University Hospital |
ClinicalTrials.gov Identifier: | NCT04181697 |
Other Study ID Numbers: |
2019/549 |
First Posted: | November 29, 2019 Key Record Dates |
Last Update Posted: | November 30, 2020 |
Last Verified: | November 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Hemophilia A Blood Coagulation Disorders, Inherited Blood Coagulation Disorders Hematologic Diseases |
Coagulation Protein Disorders Hemorrhagic Disorders Genetic Diseases, Inborn |