title: Acute weight gain and its relationship to success in high school wrestlers.
abstract: OBJECTIVE
  The purpose of this study was to investigate 1. the extent of weight gain by high school wrestlers between an evening weigh-in and the first round of wrestling the next morning and 2. the relationship between weight gain and wrestling success.
  
  
  METHODS
  Body weights of competitors (N = 260) in a high school wrestling tournament were recorded at official weigh-in and again, about 12 h later, immediately before the first round of wrestling. Data for the heavyweight class was excluded. Weight gain (WG in kg), relative weight gain (RWG in %), and weight discrepancy between opponents (WD in kg) were calculated from data obtained at the weighings. The mean WG for all wrestlers was 1.3 kg +/- 1.1 with a range of -2.0 kg to +4.4 kg. This corresponds to RWG of 2.2 +/- 1.7% body weight.
  
  
  RESULTS
  WG in the lower weight classes was statistically larger than that seen in the highest weight classes (P < 0.05). The smallest RWG was seen in the 189-lb. class (1.1 +/- 1.9%), and the largest RWG was seen in the 112-lb. class (3.0 +/- 2.1%). Average WD between competitors was 1.7 +/- 1.5 kg (range 0-7.5 kg.). Average WD was largest in the two heaviest classes. Average WG was 1.5 +/- 1.1 kg for winners and 1.2 +/- 1.0 kg for losers. RWG was 2.4 +/- 1.8% for winners and 1.9 +/- 1.6% for losers.
  
  
  CONCLUSIONS
  The difference in WG and RWG between winners and losers was significant (P < 0.05). In 74 of the 130 bouts (57%), the heavier wrestler was successful (NS).
authors.forename: R R
authors.initials: RR
authors.lastname: Wroble
authors.forename: D P
authors.initials: DP
authors.lastname: Moxley
mesh_terms: D000293:Adolescent; D001835:Body Weight; D006801:Humans; D008297:Male; D010807:Physical Endurance; D013997:Time Factors; D015430:Weight Gain; D014952:Wrestling