HMS, TIP NSE-Bank 22a Outline why an athlete would use Proprioceptive Neuromuscular Facilitation (PNF) training. (2 marks) --- 6 WORK AREA LINES (style=lined) --- Show Answers Only Proprioceptive Neuromuscular Facilitation (PNF) training uses an isometric contraction during stretching. It can help athletes such as gymnasts increase their range of motion and strengthen muscle fibres during the stretching process. Show Worked Solution Proprioceptive Neuromuscular Facilitation (PNF) training uses an isometric contraction during stretching. It can help athletes such as gymnasts increase their range of motion and strengthen muscle fibres during the stretching process.