1. Te Huataki Waiora School of Health, The University of Waikato, Hamilton 3216, New Zealand
2. New Zealand Rugby, Wellington 6011, New Zealand
3. Faculty of Health, Education and Environment, Toi Ohomai Institute of Technology, Tauranga 3112, New Zealand
4. Sport, Performance, and Nutrition Research Group, School of Allied Health, Human Services and Sport, Melbourne 3086, Australia
5. Department of Sport and Recreation, Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland 0627, New Zealand