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Postural Control Performance at Different Levels of Task Difficulty in Individuals With Haemophilia.

Ryan Maldonado Bernardes1, Francisco Almeida Tchonga1,2, Natalia Madalena Rinaldi1

  • 1Laboratory of Biomechanical Movement Analysis (Bio.Mov), Center of Physical Education and Sports (Cefd), Federal University of Espírito Santo (Ufes), Vitória, ES, Brazil.

Haemophilia : the Official Journal of the World Federation of Hemophilia
|April 15, 2026
PubMed
Summary

Individuals with haemophilia (HG) exhibit altered postural control, showing less sway in specific challenging conditions compared to healthy controls (CG). This highlights unique balance strategies in people with haemophilia.

Keywords:
Haemophilia AHaemophilia Bjoint disorderspostural balanceproprioception

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Area of Science:

  • Biomechanics
  • Neurology
  • Physiotherapy

Background:

  • Haemophilia is a genetic bleeding disorder impacting clotting factors VIII and IX.
  • This deficiency can lead to joint and muscle impairments, affecting overall postural control.

Purpose of the Study:

  • To evaluate postural control performance in individuals with haemophilia across various task conditions.
  • To identify specific challenges in balance associated with haemophilia.

Main Methods:

  • 19 individuals with haemophilia (HG) and 16 controls (CG) participated.
  • Postural control was assessed during bipedal and semi-tandem stances on firm and unstable surfaces, with eyes open and closed.

Main Results:

  • The haemophilia group (HG) demonstrated significantly different postural control (lower PEAK_AP and FREQ80_ML) than the control group (CG) specifically in the semi-tandem stance on an unstable surface with eyes closed (STUC).
  • Interactions between group and condition were most prominent in anteroposterior direction variables, suggesting reliance on ankle and hip strategies.

Conclusions:

  • People with haemophilia display distinct postural control characteristics, particularly with reduced base of support, unstable surfaces, and visual deprivation.
  • Balance strategies in haemophilia involve specific frequency and velocity adaptations, primarily affecting anteroposterior sway.