What does Proprioceptive Neuromuscular Facilitation (PNF) combine?

Proprioceptive Neuromuscular Facilitation (PNF) is a specialized stretching technique that effectively enhances flexibility and range of motion. The correct answer highlights the essence of PNF, which combines stretching with alternating contractions and relaxations of muscles. This method typically involves a partner or therapist who assists in the stretching process.

During a PNF stretch, one muscle is contracted while the partner holds the limb in a stretched position. Following the contraction, the muscle is relaxed, and a further stretch is applied to take advantage of the increased muscle flexibility that occurs after the contraction. This sequence of activation and relaxation is what sets PNF apart from other stretching techniques, making it particularly effective for improving muscular flexibility and joint mobility.

In contrast to this, the other options do not accurately encompass the unique characteristics of PNF. For example, combining cardiovascular exercise and strength training focuses on overall fitness rather than stretching techniques. Furthermore, relaxation techniques with meditation serve a different purpose primarily related to mental well-being, while dynamic and static stretching refer to different styles of stretching that do not include the specific neuromuscular engagement found in PNF. Thus, the focus on the alternating contractions and relaxations of muscles is what makes option B the correct choice.