title: Relationship of body mass status with running and jumping performances in young basketball players.
abstract: OBJECTIVE
  the main purpose of this study was to examine the relationship of body mass (BM) status with running and jumping performances in young male basketball players.
  
  
  METHODS
  basketball players (n=72, age 12.9±2.8 yrs), who were grouped into U-12 (9-12 yrs), U-15 (12-15 yrs) and U-18 (15-18 yrs), performed a battery of anthropometric, running and jumping tests. We examined differences among age groups, and between normal weight and overweight players.
  
  
  RESULTS
  the results indicated significant and large differences among age groups in BM, height, body mass index (BMI), fat mass (FM), fat-free mass, speed, endurance, standing long jump, countermovement jump (CMJ), mean power in 30 s jumping test (Pmean) (p<0.001, η(2)≥0.23) with older players presenting higher values. Within each age group, overweight players had higher BM, BMI, body fat percentage and FM (p<0.05) than their normal weight counterparts. Overweight players had worst performance in running (sprint and endurance) and jumping (CMJ and Pmean) in U-12, and worst endurance in U-18 (p<0.05, |d|≥0.82) than normal-weight players, whereas there was no difference in U-15.
  
  
  CONCLUSIONS
  it was concluded that the relationship of BMI with running and jumping performances varied according to age. Based on these findings, trainers and coaches should focus on special intervention exercise and nutrition programs targeting optimal body mass especially in young basketball players, where the excess of body mass seemed to have the most detrimental effect on running and jumping performances.
authors.affiliation: Department of Physical and Cultural Education, Hellenic Army Academy, Nikaia, Greece.
authors.forename: Pantelis Theodoros
authors.initials: PT
authors.lastname: Nikolaidis
authors.affiliation: Department of Physical Education and Sport Sciences, Payame Noor University, Tehran, Iran.
authors.forename: Abbas
authors.initials: A
authors.lastname: Asadi
authors.affiliation: Universidad do Porto, Faculty of Sport, Porto, Portugal.
authors.forename: Eduardo J A M
authors.initials: EJ
authors.lastname: Santos
authors.affiliation: Universidad del País Vasco, Donostia-San Sebastian, Spain.
authors.forename: Julio
authors.initials: J
authors.lastname: Calleja-González
authors.affiliation: University eCampus, Novedrate, Italy.
authors.forename: Johnny
authors.initials: J
authors.lastname: Padulo
authors.affiliation: Tunisian Research Laboratory "Sport Performance Optimisation", National Center of Medicine and Science in Sports, Tunis, Tunisia.
authors.forename: Hamdi
authors.initials: H
authors.lastname: Chtourou
authors.affiliation: Faculty of Physical Education and Sports, Comenius University, Bratislava, Slovakia.
authors.forename: Erika
authors.initials: E
authors.lastname: Zemkova
keywords: adiposity; age; overweight; performances; physical exercise; team sport