Reactive Postural Adjustments | Strategies For Maintaining Balance

The video explains reactive postural adjustment strategies used to maintain balance during unexpected perturbations. It covers three main strategies: ankle, hip, and step. The ankle strategy is used for small perturbations, relying on ankle proprioceptors. The hip strategy is for large or fast perturbations with a narrow base of support, involving opposite movements of the head and hips. The step strategy involves taking a step to adjust the base of support in response to large perturbations.

What are the three main strategies used for maintaining balance during unexpected perturbations?

• Step, jump, and run strategies

• Hip, shoulder, and neck strategies

• Ankle, hip, and step strategies

• Ankle, knee, and elbow strategies

In the ankle strategy, which part of the body primarily detects small perturbations?

• Inner ear

• Shoulder muscles

• Ankle proprioceptors

• Knee joint

What is the muscle activation pattern in the ankle strategy?

• Random activation

• Simultaneous activation

• Distal to proximal

• Proximal to distal

Which strategy is used when the base of support is narrow and the perturbation is large or fast?

• Ankle strategy

• Knee strategy

• Hip strategy

• Step strategy

In the hip strategy, how do the head and hips move in relation to each other?

• In the same direction

• In opposite directions

• They remain stationary

• They move randomly

What triggers the step strategy in response to a perturbation?

• A small perturbation

• A large or fast perturbation with a regular base of support

• A narrow base of support

• A slow perturbation

In the step strategy, how does the limb move in response to the direction of the perturbation?

• It moves randomly

• It remains stationary

• In the opposite direction of the perturbation

• In the same direction as the perturbation