RSUSSH 2020
IN20-033 The Effect of Visual and Auditory Cueing on Obstacle Crossing Characteristics in Healthy Young Females
Presenter: Fuengfa Khobkhun
Mahidol University, Thailand
Abstract
It is well established that the sensory system plays a significant role in the control of movement. Obstacle crossing is one of the most complicated ambulatory tasks and requires coordinated control from both the musculoskeletal and sensory systems in order to perform the task successfully and safely. This study aimed to investigate the effect of visual and auditory cues on lower limb kinematics of the lead and trail limbs during obstacle crossing in healthy young females. Eleven healthy females age 18-22 years participated in the study. A 3D motion analysis system was used to capture obstacle crossing characteristics. Four different conditions were considered: 1) crossing the obstacle with full vision and no sound (VNS), (2) crossing the obstacle with full vision and added sound (VS), (3) crossing the obstacle with blurred vision and no sound (BNS), and (4) crossing the obstacle with blurred vision and added sound (BS). Obstacle crossing characteristics included hip, knee, and ankle angles of the lead and trail limbs were recorded and maximum hip flexion angle of the lead limb (Max Hip-LL), maximum hip flexion angle of the trail limb (Max Hip-TL), maximum knee flexion angle of the lead limb (Max Hip-LL), maximum knee flexion angle of the trail limb (Max Hip-TL), maximum ankle plantarflexion angle of the lead limb (Max Ankle-LL), and maximum ankle plantarflexion angle of the trail limb (Max Ankle-TL) were analyzed. A Repeated measure ANOVA analysis with pairwise comparisons showed significant differences in the Max Hip-LL between the VNS and BS, and VS and BS conditions, and in the Max Hip–TL and Max Knee-LL between the VS and BNS, and VS and BS conditions. A significant difference was also seen in Max Knee-TL between the VNS and BS, VS and BNS, and VS and BS conditions. In addition, a significant difference was seen in Max Ankle-TL between VNS and BS condition. Modifications of movement control under different testing sensory conditions were demonstrated in healthy young females in both the lead and trail limbs.
Citation format:
Khobkhun, F., & Bovonsunthonchai, S.. (2020). The Effect of Visual and Auditory Cueing on Obstacle Crossing Characteristics in Healthy Young Females. Proceeding in RSU International Research Conference, May 1, 2020. Pathum Thani, Thailand.QUESTIONS & ANSWERS
I would like to thank you for interesting presentation, i have some questions to ask you.
1. why did author select this obstacle dimension(10x60x10 cm), Is it 10 cm tall?
2. Why did the author select a 10% faster cadence instead of a normal cadence?
3. How about the effects of rhythmic sound on hip and knee angle during obstacle crossing situation?
Thank you
Dear Dr. Kittima,
Thank you for your interest in my research. Please allow me to answer your question as follows;
1. I have selected the obstacle crossing that is made from the wood and the dimension is 10x60x10, and yes the tall 10 cm. results from we have used this information from the previous published (Bovonsunthonchai, S., Hiengkaew, V. & Vachalathiti, R. (2012). Obstacle crossing characteristics in the healthy young female and elderly female subjects. Siriraj Medical Journal, 64, 52-56.) and this size has found that it's simiar to the obstacle that we have seen in our Thai house such as the step over the door. Tripping over obstacles (as this size) seems to be the major cause of falls in younger and older adults.
2. The speed of walking is captured by metronome and is set at 10% increasing of natural cadence of the individuals. This is set for detecting the effect of increasing of rhythm on obstacle crossing movement. This speed is not too fast to perform and is controlled at the same percentage for all individuals. Information is added as shown in the procedure section.
3. The movements of the hip and knee in both the lead and trail limbs was increased during blur visual with the sound in obstable crossing task which would indicate a change in proximal joint strategy with greater flexion angles seen in both the hip and knee under this condition and visual limitation conditions. However, crossing the obstacle without visual input requires the participants to flex their hip and knee more than the usual requirement in order to guarantee a safe crossing. Therefore, it is noted that visual information is an essential sensory input more than the rythmic sound with normal visual to allow the correct control for the movement and any deficit produces adaptive strategies.
Kind Regards,
Fuengfa
Thank you so much