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Youth sport

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8 papers 0 to 25 followers
By Nico Kolokythas PhD Researcher in Strength & Conditioning
Avery D Faigenbaum
No abstract text is available yet for this article.
October 14, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Pantelis T Nikolaidis, Konstantinos Gkoudas, Jose Afonso, Vicente Clemente-Suarez, Beat Knechtle, Stavros Kasabalis, Athanasios Kasabalis, Helen Douda, Savvas Tokmakidis, Gema Torres-Luque
BACKGROUND: The aim of the present study was to examine the relationship of vertical jump (Abalakov jump, AJ) with anthropometric and physiological parameters in youth elite female volleyball players. METHODS: Seventy-two selected volleyball players from the region of Athens (age 13.3±0.7 yrs, body mass 62.0±7.2 kg, height 171.5±5.7 cm, body fat 21.2±4.5%), classified into quartiles according to AJ performance (group A, 21.4-26.5 cm; group B, 26.8-29.9 cm; group C, 30...
May 3, 2016: Journal of Sports Medicine and Physical Fitness
Peter D Fabricant, Nikita Lakomkin, Dai Sugimoto, Frances A Tepolt, Andrea Stracciolini, Mininder S Kocher
OBJECTIVES: Early sports specialization is being seen with increasing frequency in children and adolescents in an attempt to achieve elite performance status. This phenomenon has attracted negative medical and lay media attention due, in part, to the possibility of an increased risk of acute and overuse injuries. The purpose of this study was to systematically review available research on youth sport specialization and musculoskeletal injury. METHODS: A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines for studies evaluating sports specialization and injury rates in participants under age 18...
September 2016: Physician and Sportsmedicine
Igor Hideki Ito, Alessandra Madia Mantovani, Ricardo Ribeiro Agostinete, Paulo Costa Junior, Edner Fernando Zanuto, Diego Giulliano Destro Christofaro, Luis Pedro Ribeiro, Rômulo Araújo Fernandes
OBJECTIVE: The purpose of this study was to analyze the relationship between martial arts practice (judo, karate and kung-fu) and bone mineral density in adolescents. METHODS: The study was composed of 138 (48 martial arts practitioners and 90 non-practitioners) adolescents of both sexes, with an average age of 12.6 years. Bone mineral density was measured using Dual-Energy X-ray Absorptiometry in arms, legs, spine, trunk, pelvis and total. Weekly training load and previous time of engagement in the sport modality were reported by the coach...
June 2016: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
Jaak Jürimäe
No abstract text is available yet for this article.
February 2016: Pediatric Exercise Science
Kathleen Golle, Thomas Muehlbauer, Ditmar Wick, Urs Granacher
BACKGROUND: Generating percentile values is helpful for the identification of children with specific fitness characteristics (i.e., low or high fitness level) to set appropriate fitness goals (i.e., fitness/health promotion and/or long-term youth athlete development). Thus, the aim of this longitudinal study was to assess physical fitness development in healthy children aged 9-12 years and to compute sex- and age-specific percentile values. METHODS: Two-hundred and forty children (88 girls, 152 boys) participated in this study and were tested for their physical fitness...
2015: PloS One
Rodolfo A Dellagrana, Luiz G A Guglielmo, Bruno V Santos, Sara G Hernandez, Sérgio G da Silva, Wagner de Campos
The purpose of this study was to investigate the relationship between physiological, anthropometric, strength, and muscle power variables and a 5-km time trial (5kmT) in young runners. Twenty-three runners volunteered to participate in this study. Height, body mass, body fat, and fat-free mass (FFM) were measured. The subjects underwent laboratory testing to determine maximal oxygen uptake ((Equation is included in full-text article.)), velocity at ventilatory threshold (VVT), running economy (RE), velocity associated with maximal oxygen uptake ((Equation is included in full-text article...
June 2015: Journal of Strength and Conditioning Research
R Gathercole, B Sporer, T Stellingwerff
Countermovement jump (CMJ) performance is typically analyzed through single-point concentric-based variables (e. g., peak power or force and height). However, methodological approaches examining movement strategies may be more sensitive to neuromuscular fatigue. 12 elite female rugby sevens athletes undertook weekly CMJ testing throughout a 6-week training block involving progressively increased training loads. Athletes self-reported training load (TRIMP) and wellness daily. 22 CMJ variables were assessed, incorporating analyses of force, velocity, power and time measured during eccentric and concentric jump phases...
August 2015: International Journal of Sports Medicine
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