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STAIRGAIT: Gait and stair ascent biomechanical outputs - kinematic and kinectic correlations in a cross-sectional anlytical observational study
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Stair ascent is a more demanding functional task than gait, requiring complex coordination of the lower limbs. Few studies have explored the correlation of biomechanical outputs to assess the potential for transference across functional tasks. This study aims to investigate the correlation between the biomechanical outcomes of gait and stair ascent
tasks across spatial-temporal, kinetic, and kinematic data in healthy adults aged over 30. 31 participants (16 males and 15 females) were recruited. The tasks were assessed
with an optoelectronic motion capture system with 13 cameras to extract the maximum and minimum angles and the range of motion of the hip, knee, and ankle across the frontal, sagittal, and transverse planes. Two force plates were used to extract the joint moments for the same planes. All variables were compared between tasks, and those without significant diferences were assessed for correlations. All spatial-temporal variables showed significant differences. Of the kinetic variables, only the maximum hip extension moment exhibited a correlation. A strong positive correlation was found for the maximum ankle plantar flexion angle (p<0.0001, r=0.797), the maximum ankle supination (p<0.0001, r=0.865), and the maximum hip abduction angle (p<0.0001, r=0.703). Correlations between stair ascent and gait postulate the potential for transference of specific neuromotor components, suggesting a preliminary analysis to guide future studies.
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Stair ascent Gait Neuromotor transference Functional tasks Correlation