Movement analysis questions

Identify the three classes of levers.

First-class lever, second-class lever, and third-class lever.

Name the three planes of movement in human anatomy.

Sagittal plane, frontal plane, and transverse plane.

Which axis of movement is associated with the sagittal plane?

The frontal axis.

Explain the difference between the sagittal and frontal planes.

The sagittal plane divides the body into left and right halves and allows forward and backward movements (e.g., running). The frontal plane divides the body into front and back halves and allows side-to-side movements (e.g., jumping jacks).

Describe the function of the effort in a lever system.

The effort is the force applied by the muscle to move the load in the lever system.

Provide an example of a first-class lever in the human body.

An example of a first-class lever is the neck when you nod your head. he fulcrum is the neck joint, the effort is applied by the muscles at the back of the neck, and the load is the head.

Discuss the mechanical advantage of a second-class lever and provide a human body example.

A second-class lever has the load between the effort and the fulcrum, which gives a mechanical advantage as less effort is required to move a larger load. An example in the human body is the calf during a calf raise, where the fulcrum is the toes, the load is the body weight, and the effort is applied by the calf muscles.

Explain how the position of the load, effort, and fulcrum determines the class of a lever.

• In a first-class lever, the fulcrum is between the load and effort (e.g., neck). In a second-class lever, the load is between the fulcrum and effort (e.g., calf raise). In a third-class lever, the effort is between the fulcrum and load (e.g., bicep curl).

Describe the movements that occur in the sagittal plane and their corresponding axes.

Movements in the sagittal plane include flexion and extension, such as bending and straightening the elbow. The corresponding axis is the frontal axis, which runs from side to side.

Analyse the role of the frontal plane in lateral movements during physical activities.

The frontal plane enables lateral movements such as side lunges and jumping jacks, including adduction & abduction. These movements are associated with the sagittal axis.

Evaluate the importance of lever systems in enhancing athletic performance.

Lever systems increase efficiency in movement, allowing athletes to generate more force or speed. Understanding lever systems can improve performance in activities like lifting, running, and swimming by optimizing body mechanics.