title: Jump-Squat Performance and Its Relationship With Relative Training Intensity in High-Level Athletes.
abstract: To examine the relationship between the relative load in full squats and the height achieved in jump-squat (JS) exercises and to determine the load that maximizes the power output of high-level athletes.
  
  
  
  Fifty-one male high-level track-and-field athletes (age 25.2 ± 4.4 y, weight 77. ± 6.2 kg, height 179.9 ± 5.6 cm) who competed in sprinting and jumping events took part in the study. Full-squat 1-repetition-maximum (1-RM) and JS height (JH) with loads from 17 to 97 kg were measured in 2 sessions separated by 48 h.
  
  
  
  Individual regression analyses showed that JH (R2 = .992 ± .005) and the jump decrease (JD) that each load produced with respect to the unloaded countermovement jump (CMJ) (R2 = .992 ± 0.007) are highly correlated with the full-squat %1-RM, which means that training intensities can be prescribed using JH and JD values. The authors also found that the load that maximizes JS's power output was 0%RM (ie, unloaded CMJ).
  
  
  
  These results highlight the close relationship between JS performance and relative training intensity in terms of %1-RM. The authors also observed that the load that maximizes power output was 0%1-RM. Monitoring jump height during JS training could help coaches and athletes determine and optimize their training loads.
authors.affiliation: Dept of Physical Activity and Sports Science, St. Anthony Catholic University, Murcia, Spain.
authors.forename: Pedro
authors.initials: P
authors.lastname: Jiménez-Reyes
authors.forename: Fernando
authors.initials: F
authors.lastname: Pareja-Blanco
authors.forename: Carlos
authors.initials: C
authors.lastname: Balsalobre-Fernández
authors.forename: Víctor
authors.initials: V
authors.lastname: Cuadrado-Peñafiel
authors.forename: Manuel A
authors.initials: MA
authors.lastname: Ortega-Becerra
authors.forename: Juan J
authors.initials: JJ
authors.lastname: González-Badillo
mesh_terms: D000328:Adult; D054874:Athletic Performance / Q000502:physiology*; D001823:Body Composition; D003430:Cross-Sectional Studies; D006801:Humans; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D059385:Plyometric Exercise; D055070:Resistance Training / Q000379:methods*; D014142:Track and Field / Q000502:physiology*; D055815:Young Adult