Question

Maintenance of plank position is an example of which type of strength development exercise?

• A. Isometric
• B. Isotonic
• C. Isokinetic
• D. Isonomic

Answer 1

The Correct Option is A

The maintenance of a plank position is an example of isometric strength development exercise. In physical education, different types of exercises contribute to various forms of strength building. Here's a breakdown of the options provided, highlighting why "isometric" is the correct answer: 

• Isometric: Involves a static position where the muscle length does not change, such as holding a plank. The muscles are engaged and exerting force without movement.
• Isotonic: Involves changes in muscle length while performing movements, such as lifting weights where the muscle shortens and lengthens.
• Isokinetic: Refers to exercises performed with a constant speed of movement, often requiring specialized equipment that provides consistent resistance.
• Isonomic: This term is not related to exercise types in the context of strength development.

Thus, the correct answer is "isometric," as the plank is held without any change in muscle length, focusing on strength and endurance.

Answer 2

Isometric exercises involve muscle contraction without any joint movement or change in muscle length. During these exercises, the muscles are engaged in a static position, and tension is maintained for a certain period of time. This type of exercise helps to improve muscle strength, endurance, and stability.

An example of an isometric exercise is holding a plank position, where the core muscles, shoulders, and legs are contracted to maintain a straight body alignment while the position is held for a set duration. This exercise helps to strengthen the abdominal muscles, back, and shoulders, and enhances overall stability.

Isometric exercises are particularly beneficial for increasing muscular endurance and can be performed with minimal equipment, making them ideal for home workouts. They are often used in rehabilitation settings to strengthen muscles without stressing the joints. While they do not improve flexibility or cardiovascular fitness, isometric exercises are an excellent way to build static strength and promote muscle activation.