Hemophilia A Clinical Trial
Official title:
An Institutional Pilot Study to Investigate Physical Activity Patterns in Boys With Hemophilia
This pilot project was developed to investigate subjective and objective data related to the patterns of physical activity participation among hemophilia patients (FVIII or FIX) between the ages of 5 and 18 years. Physical activity participation among different levels of disease severity will be compared using accelerometers to calculate the amount of time spent in moderate to vigorous physical activity (MVPA) and the number of bouts of MVPA; additionally, data will be collected from two validated questionnaires (PedHAL and 3 day physical activity recall). Current literature that relates level of physical activity to disease severity in the pediatric hemophilia population is limited. The information gained about the type and quantity of physical activity participation in children with varying levels of hemophilia will assist in the development of education and interventions to promote good physical activity and potentially examine the role of tailored prophylaxis.
Objectives:
1. To determine if the amount of time spent performing moderate to vigorous physical
activity (MVPA) and the number of bouts of MVPA engaged in on a weekly basis differs by
the level of disease severity in the pediatric hemophilia population.
2. To determine if recorded physical activities and intensity of activities from
self-report questionnaires (PedHAL and 3 day physical activity recall - 3DPAR) differ
according to the severity of hemophilia.
3. To determine if, among patients with hemophilia, there is a relationship between
physical activity level and patient age, weight, and body mass index (BMI).
Specific Aims:
•Aim # 1: The primary aim of the study is to determine if there are differences in the
amount of time spent in MVPA by level of disease severity of children with hemophilia.
Secondary Aims:
- Aim # 2: To determine if there are meaningful differences in the accumulation of MVPA
(bouts of exercise) by disease severity of children with hemophilia.
- Aim # 3: The compare the findings from Aim #1 and #2 to the NHANES (National Health and
Nutrition Examination Survey) data, recognizing that this survey provides a comparative
healthy normal cohort.
- Aim # 4: To investigate MVPA with these data collected from the PedHAL (11) and the
3DPAR (12) by disease severity of children with hemophilia.
- Aim # 5: The review and determine the relationship between physical activity
participation and timing of prophylaxis factor replacement and whether participation is
limited to days of factor infusion.
- Aim #6: To investigate the amount of physical activity and how it relates to age,
weight, and patient body mass index (BMI).
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Observational Model: Cohort, Time Perspective: Prospective
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