What is base of support in gait?
What is base of support in gait?
In gait, the base of support has been defined as the horizontal stride width during the double-support phase when both feet are in contact with the ground and the whole-body center of gravity (CG) remains within the BOS. A wide base of support (BOS) has long been believed to be a hallmark of unsteady gait.
What is the base of gait?
The base of gait (BOG) during running is a frontal-plane variable that describes the mediolateral distance between the placement of the foot during midstance relative to the individual’s line of gravity.
What provides a good base of support?
A wide base of support is achieved by placing feet a comfortable, shoulder width distance apart. When a vertical line falls from the centre of gravity through the wide base of support, body balance is achieved. If the vertical line moves outside the base of support, the body will lose balance.
What is the normal base of support?
If you compare the two pictures, you’ll see that in a normal stance your base of support is about 12-15 inches wide, while in a narrow stance your base of support is only 6-8 inches wide. You can feel the difference this makes if you ask a friend to give you a gentle push while you try out each stance.
How do you increase the base of a support?
For increased stability while standing, the feet should be spread apart, giving a larger base of support. Stability is also increased by bending the knees, which lowers the center of gravity toward the base of support. A cane, a crutch, or a walker increases the stability of the user by widening the base of support.
Can be increased by widening the base of support?
Answer: stability can be increased by widening the base of support.
Why is a wider base of support more stable?
The larger the base of support the more stable the person/athlete is able to be. When an athlete is anticipating contact from an external player, they will natrually widen their base of support IN THE DIRECTION OF FORCE (or impeding force). Smaller BOS allows the athlete to accelerate faster and be more mobile.
How do you find the base of support?
For the base of support, in our laboratory, we use the measurement of the perpendicular distance between the most medial point of the inner border of each foot or, when shoes are worn, the most medial edge of the shoes.
How does base of support affect movement?
Is the base of support greater in unsteady gait?
These data suggest that wide-based gait alone cannot differentiate between subjects with and without balance impairments. Base of support and other whole-body kinematic variables are mechanical compensations of vestibulopathic instability.
How are the phases of the gait cycle subdivided?
Swing phase is subdivided into initial swing (from 62% to 75% [foot of the swing limb is next to the foot of the stance limb] of the gait cycle), mid swing (from 75% to 87% [tibia of the swing limb is vertical] of the gait cycle) and terminal swing (from 87% to 100% [immediately before the next initial contact] of the gait cycle) 27.
Which is biomechanic of gait and treatment of abnormal gait?
Pathomechanism: Characterized by a shorter step length and stance time on the side of the painful lower extremity. It may be accompanied by ipsilateral trunk lean with hip pain or a contralateral trunk lean with knee and foot pain. Treatment: treat underlying cause, analgesia, assistive device (AD) in contralateral hand.
How is base of support related to fall frequency?
Base of support in previous research has been defined as horizontal stride width during the double-support phase when both feet are in contact with the ground and the whole-body center of gravity (CG) remains within the BOS. Weller et al 7 found that decreased stride width was closely correlated with fall frequency and dynamic stability.