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Brad W. Willis, Katie Hocker, Swithin Razu, Aaron D. Gray, Marjorie Skubic, Seth L. Sherman, Samantha Kurkowski and Trent M. Guess

correlations to ACL injury risk. 3 – 5 Specifically, an excessive knee abduction angle (KAA), a measure of tibia displacement relative to the femur acquired by 3-dimensional motion capture systems, has been linked to elevated risk of injury to the ACL. 3 A bilateral jump-landing task, the drop vertical jump

Open access

Kathryn Mills, Aula Idris, Thu-An Pham, John Porte, Mark Wiggins and Manolya Kavakli

instructed to jump off a 30-cm high box and immediately perform a maximum vertical jump landing on both feet. During the jump, they were instructed to raise their arms as though they were jumping to shoot a ball. Up to 5 practice trials were granted prior to 3D motion analysis. A convenience sample of 40

Open access

Kyle Davis, Stephen Rossi, Jody Langdon and Jim McMillan

The purpose of the present investigation was to examine the relationship between jumping and sprinting among members of a regionally competitive club-level ultimate team. Twenty-two subjects (mean ± SD; 21.1±2.26 year) volunteered to participate in two testing sessions the week before the team’s regional tournament. Testing sessions included body-composition measurement, a 40-yard sprint (with a 10-yard split time recorded), a standing long jump (LJ) and a vertical jump (VJ). Pearson product-moment correlations revealed a significant negative correlation between LJ and 40-yard sprint time. Significant positive relationships were observed between VJ height and 10-yard power, VJ power and 10-yard power, VJ power and relative 10-yard power, relative VJ power and relative 10-yard power, BJ distance and 10-yard power, VJ height and 40-yard power, VJ power and 40-yard power, and relative VJ power and relative 40-yard power. BJ distance related significantly to 40-yard velocity, 40-yard power and 40-yard relative power. There appears to be a relationship between jumping ability and sprinting in this population, but more studies with this population are needed to confirm these results.

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Laura K. Fewell, Riley Nickols, Amanda Schlitzer Tierney and Cheri A. Levinson

: maximal oxygen consumption, vertical jump, grip strength, and push-ups. Body mass index was also obtained at admission and discharge. This study was approved by the Institutional Review Board at Washington University in St. Louis prior to data collection. Physical Outcome Measures Body Mass Index (BMI

Open access

Thomas M. Newman, Giampietro L. Vairo and William E. Buckley

• Another study demonstrated a statistically significant decrease in vertical jump height. 6 • No other statistically significant findings were reported among studies comparing unbraced with braced conditions. 3 – 6 ○ The following functional performance measures were used in this CAT: Sargent Chalk Jump

Open access

Christie Powell, Jody Jensen and Samantha Johnson

 = 90%) Retrospective case series Level 4 N = 16 Myer et al 23 14–19 y mean age: 16.9 y male/female ACLR NFL combine: (1) Broad jump (2) Vertical jump (3) Modified pro shuttle run (4) Modified agility-T (5) SLHD (6) SLTHD (7) SLTCHD (8) SLHT (LSI = 90%) Case control Level 4 N = 18 + 20 controls Myer et

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Sid Mitchell, E. Michael Loovis and Stephen A. Butterfield

suitable metric for analysis ( Bryk & Raudenbush, 2002 ). The aforementioned study by Butterfield et al. ( 2004 ) illustrates the efficacy of HLM. The purpose of their study was to examine growth rates in running speed and vertical jumping by middle school children. Running speed and/or vertical jumping

Open access

Erica M. Willadsen, Andrea B. Zahn and Chris J. Durall

single- and double-leg landings. Landings were followed by an aggressive single-leg jump laterally or by a bilateral maximal vertical jump. Hip adduction, knee abduction, knee flexion, and ankle eversion. Measures were calculated at initial contact and maximum joint angle during a drop vertical jump and

Open access

Kai-Yu Ho, Brenda Benson Deaver, Tyrel Nelson and Catherine Turner

reliability of the existing literature ranged from moderate to excellent, with King and Belyea 8 reported .45 to .99 during a drop jump task, whereas Herrington and Munro 7 reported .97 to 1.0 in a single-leg landing and Mizner et al 9 reported .89 during a drop vertical jump. In terms of intrarater

Open access

Douglas J. Casa, Samuel N. Cheuvront, Stuart D. Galloway and Susan M. Shirreffs

separated by 40 min or undertook vertical jumps and a 400-m sprint. Each of these sessions was undertaken twice. The body mass reductions averaged 0.8 and 1.3 kg in the 50/200-m sessions over a 2-hr period, and averaged 0.5 and 1.1 kg over 45 min in the 400 m and vertical jump session. These reductions are