title: Do bilateral power deficits influence direction-specific movement patterns?
abstract: This study examined the effect of bilateral power differences on direction-specific movement patterns in American collegiate football players. Sixty-two college football players performed unilateral vertical jump testing prior to agility testing (3-cone drill). Three trials were performed on the subjects' dominant and nondominant sides. A significant difference (9.7 +/- 6.9%) in unilateral jump power was observed between dominant and nondominant legs. No difference (p>0.05) was seen, however, in agility performance between dominant (8.02 +/- 0.51 s) and nondominant (7.97 +/- 0.51 s) sides. Unilateral power in the nondominant leg had a low-to-moderate, correlation-to-agility sprint times performed on the subject's dominant (r=-0.36, p<0.05) and nondominant (r=-0.37, p<0.05) sides. Although power performance in the nondominant leg appears to correlate to agility performance, bilateral power deficits do not appear to relate to performance differences during direction-specific agility tests.
authors.affiliation: Department of Health and Exercise Science, The College of New Jersey, Ewing, New Jersey 08628, USA. hoffmanj@tcnj.edu
authors.forename: Jay R
authors.initials: JR
authors.lastname: Hoffman
authors.forename: Nicholas A
authors.initials: NA
authors.lastname: Ratamess
authors.forename: Marc
authors.initials: M
authors.lastname: Klatt
authors.forename: Avery D
authors.initials: AD
authors.lastname: Faigenbaum
authors.forename: Jie
authors.initials: J
authors.lastname: Kang
mesh_terms: D000293:Adolescent; D000328:Adult; D005080:Exercise Test; D005538:Football; D006801:Humans; D007866:Leg / Q000503:physiopathology*; D008297:Male; D009038:Motion; D053580:Muscle Strength; D013647:Task Performance and Analysis