Improving the quality of movement biomechanically by knowledge of results and knowledge of performance of some elderly women in Palestine

Abstract

This study aims at investigating the feedback role in improving biomechanically the quality of movement among some elderly women in Palestine. The experimental approach was implemented on a sample that consisted of (30) elderly women aged (60-70) years, and they were divided into two groups, the first group (G1) received immediate feedback with the knowledge of performance (KP) (n=15), and the second group (G2) received the immediate feedback with the knowledge of results(KR) (n=15). Subjects were filmed from the sagittal plane during walking and standing from sitting on the chair using video camera (25) frames/s. A computer software (Kinovea 8.15) was used for the motion analysis of the variables of stand up from sitting on the chair (displacement, distance, speed, hip angle related to knee angle and streamlined movement (Angle-angle diagram) . The study results indicated that the feedback with the KP (G1) and the feedback with the KR (G2) had an effective role in the improvement of the movement quality of elderly women by enhancing the values of measured kinematic variables. Also, there were no statistically significant differences at (α ≤ 0.05) between G1 and G2 in the improvement of the studied variables. Finally, the quality of movement has been notably improved in the streamlined movement, balance and the measured kinematical variables during the walking test due to the feedback. The study recommended the necessity of using the kinematic analysis and the two types of feedback with the KP and the KR for improving the movement quality of elderly.