## 2 Materials and Methods
### Methods
Fifteen spatio-temporal metrics delineating the step cycle structure: Step cadence, measured in steps per minute, which reflects the average step frequency; Stride time duration (s), the interval between the initial contacts of two successive steps by the same foot, indicating the average cycle duration; Step time duration (s), the time from the initial contact of one foot to the initial contact of the opposing foot; The proportions of stance and swing phase durations expressed as a percentage (%) of stride time, representing the stance time as a percentage of the total stride time; The percentage of single support duration (%), the period during which only one foot is in contact with the ground, calculated from the termination of contact by the opposing foot to the initial contact by the same foot, normalised to stride time; Double support (%) signifies the cumulative duration of both feet being in simultaneous contact with the ground, occurring twice at the beginning and end of the stance phase; The loading response (%), also referred to as \"foot flat\", quantifies the double support phase from the initial contact until the contralateral foot lifts off the ground (contralateral toe-off); Pre-swing (%) measures the double support phase from the contact of the contralateral foot until the ipsilateral foot lifts off. 2. The average ROM throughout the cycle, expressed in angular degrees (deg), described the trunk and upper and lower limbs' movements in relation to the global coordination system: * regarding the thorax, thoracic movements included flexion-extension, which is the anterior or posterior displacement along the sagittal plane; lateral flexion, which denotes sideways displacement within the frontal plane; and internal-external (axial) rotation, representing rotational movement around the transversal axis. * regarding the lumbar region, lumbar dynamics encompass flexion-extension, indicating anterior or posterior movement along the sagittal axis; lateral flexion, which refers to sideways movement in the frontal plane; and internal-external (axial) rotation, describing rotational movement around the transversal axis. * regarding the pelvis, movements were categorised as pelvic tilt, involving anterior or posterior displacement in the sagittal plane; pelvic obliquity, which is the upward or downward movement in the frontal plane; and pelvic (axial) rotation, detailing internal or external rotation within the transverse plane. * regarding the context of the upper extremity, shoulder movements were classified as flexion-extension, the anterior or posterior movement of the humerus relative to the thorax in the sagittal plane; abduction-adduction: the lateral movement of the humerus relative to the thorax in the frontal plane; and internal-external rotation: the rotational movement of the humerus in the transverse plane. Elbow movements included flexion-extension, the movement of the forearm in relation to the humerus across the transversal axis; wrist dynamics involve flexion-extension, the movement in relation to the radius along the transversal axis, measured between upper arm and hand sensors; wrist radial-ulnar deviation: the sideward movement in relation to the radius, assessed between the upper arm and hand sensors; and wrist supination-pronation: the rotational movement around the axis, quantified between the upper arm and hand sensors. * regarding the lower extremity, hip movements encompass flexion-extension, the movement of the femur in the sagittal plane around the mediolateral axis; abduction-adduction, the lateral movement of the femur in relation to the pelvis in the frontal plane; and hip rotation, the rotational movement around the proximal-distal axis in the transverse plane. Knee dynamics include flexion-extension: the movement of the tibia in relation to the femur in the sagittal plane.