Question

Which of the following statements define the basis of proprioceptive Neuromuscular Facilitation?

• A. (B), (C) and (D) only
• B. (A), (B) and (D) only
• C. (A), (B), (C) and (D) only
• D. (A), (B) and (C) only
• E.

Hint:

PNF techniques emphasize increasing motor unit recruitment and improving coordination through specific movement patterns.

Answer 1

The Correct Option is A

Step 1: Understanding Proprioceptive Neuromuscular Facilitation (PNF).
PNF is a technique used in rehabilitation that aims to improve muscle strength and flexibility by stimulating proprioceptive receptors. The principles include increasing muscle activation, improving coordination, and using specific patterns of movement.
Step 2: Analyzing the options.
- (A) To stimulate the maximum number of motor units into activity: Incorrect. PNF focuses more on the intensity of the stimuli and the pattern of muscle activation, not just the quantity of motor units.
- (B) The functioning of these is dependent on the degree of excitation of the motor neurons: Correct. PNF enhances neural activation, and the degree of motor neuron excitation is key in facilitating movement.
- (C) The patterns of movement associated with this technique were evolved from the basic idea of overstretching muscles to stimulate the activity of the muscle spindles: Correct. This reflects the stretch reflex principle inherent in PNF techniques.
- (D) The strength of a muscle contraction is directly proportional to the number of activated motor units, which obey the 'all or none' law: Correct. PNF relies on recruitment of motor units to facilitate stronger contractions.
Step 3: Conclusion.
Thus, the correct answer is (1), as statements (B), (C), and (D) correctly describe the basis of PNF.