In 2004, a randomized controlled trial conducted by J.B. Feland and H.N. Marin investigated the efficacy of submaximal contractions in contract-relax proprioceptive neuromuscular facilitation (CRPNF) stretching for enhancing hamstring flexibility. The study aimed to compare the effectiveness of submaximal contractions with maximal voluntary isometric contractions (MVICs) in improving hamstring flexibility. The trial involved 72 male participants aged 18-27, all of whom demonstrated tight hamstrings, defined … Continue reading Does submaximal contraction equal maximal results? Exploring contract-relax proprioceptive neuromuscular facilitation (CRPNF) stretching for hamstring flexibility