title: Responses of Lower-Body Power and Match Running Demands Following Long-Haul Travel in International Rugby Sevens Players.
abstract: Mitchell, JA, Pumpa, KL, and Pyne, DB. Responses of lowerbody power and match running demands after long-haul travel in international rugby sevens players. J Strength Cond Res 31(3): 686-695, 2017-This study determined the effect of long-haul (>5 hours) travel on lower-body power and match running demands in international rugby sevens players. Lower-body power was assessed in 22 male international rugby sevens players (age 21.7 ± 2.7 years, mass 89.0 ± 6.7 kg, stature 180.5 ± 6.2 cm; mean ± SD) monitored over 17 rugby sevens tournaments. A countermovement jump was used to monitor lower-body power (peak and mean power) over repeated three week travel and competition periods (pretravel, posttravel, and posttournament). Small decreases were evident in peak power after both short and long-haul travel (-4.0%, ±3.2%; mean, ±90% confidence limits) with further reductions in peak and mean power posttournament (-4.5%, ±2.3% and -3.8%, ±1.5%) culminating in a moderate decrease in peak power overall (-7.4%, ±4.0%). A subset of 12 players (completing a minimum of 8 tournaments) had the effects of match running demands assessed with lower-body power. In this subset, long-haul travel elicited a large decrease in lower-body peak (-9.4%, ±3.5%) and mean power (-5.6%, ±2.9%) over the monitoring period, with a small decrease (-4.3%, ±3.0% and -2.2%, ±1.7%) posttravel and moderate decrease (-5.4%, ±2.5% and -3.5%, ±1.9%) posttournament, respectively. Match running demands were monitored through global positioning system. In long-haul tournaments, the 12 players covered ∼13%, ±13% greater total distance (meter) and ∼11%, ±10% higher average game meters >5 m·s when compared with short-haul (<5 hours) travel. Effective pretravel and posttravel player management strategies are indicated to reduce neuromuscular fatigue and running load demands in rugby sevens tournaments after long-haul travel.
authors.affiliation: 1Australian Rugby Union, St Leonards, New South Wales, Australia; 2University of Canberra Research Institute for Sport and Exercise, Bruce, Australian Capital Territory, Australia; and 3Australian Institute of Sport, Canberra, Australian Capital Territory, Australia.
authors.forename: John A
authors.initials: JA
authors.lastname: Mitchell
authors.forename: Kate L
authors.initials: KL
authors.lastname: Pumpa
authors.forename: David B
authors.initials: DB
authors.lastname: Pyne
mesh_terms: D000328:Adult; D054874:Athletic Performance / Q000502:physiology*; D001827:Body Height; D005538:Football / Q000502:physiology*; D040362:Geographic Information Systems; D006801:Humans; D035002:Lower Extremity / Q000502:physiology; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology*; D012420:Running / Q000502:physiology*; D013997:Time Factors; D014195:Travel; D055815:Young Adult