single-leg static and dynamic postural stability of male and female soldiers who currently occupy MOS with similar physical demand ratings. Based on the previous literature, we hypothesized that females would have better static postural stability and that males would have better dynamic postural
Timothy C. Sell, Mita T. Lovalekar, Takashi Nagai, Michael D. Wirt, John P. Abt and Scott M. Lephart
Laura C. Reid, Jason R. Cowman, Brian S. Green and Garrett F. Coughlan
Global positioning systems (GPS) are widely used in sport settings to evaluate the physical demands on players in training and competition. The use of these systems in the design and implementation of rehabilitation and return-to-running programs has not yet been elucidated.
To demonstrate the application of GPS technology in the management of return to play in elite-club Rugby Union.
Professional Rugby Union club team.
8 elite Rugby Union players (age 27.86 ± 4.78 y, height 1.85 ± 0.08 m, weight 99.14 ± 9.96 kg).
Players wore GPS devices for the entire duration of a club game.
Main Outcome Measures:
Variables of locomotion speed and distance were measured.
Differences in physical demands between playing positions were observed for all variables.
An analysis of the position-specific physical demands measured by GPS provides key information regarding the level and volume of loads sustained by a player in a game environment. Using this information, sports-medicine practitioners can develop rehabilitation and return-to-running protocols specific to the player position to optimize safe return to play.
Brock Laschowski, Naser Mehrabi and John McPhee
wheelchair curling. These investigations would provide unprecedented insights into the physical demands of this Paralympic sport. One of the main objectives of biomechanists is to evaluate the dynamics (ie, forces and moments) associated with human movements. Experimentally measuring the forces of individual
Charlie Bowen, Kristian Weaver, Nicola Relph and Matt Greig
prevalence in elite youth players has been shown to be higher than that observed in their senior peers, attributed to training exposure in young elite players who lack the skeletal maturity to tolerate the physical demands imposed. 2 Lower-limb musculoskeletal abnormalities, malalignment, and a reduced
Logan A. Lucas, Benjamin S. England, Travis W. Mason, Christopher R. Lanning, Taylor M. Miller, Alexander M. Morgan and Thomas Gus Almonroeder
prevention is developing a thorough understanding of potential contributing factors. 6 The high rate of lower-extremity musculoskeletal injuries in athletes is not surprising considering the physical demands of sports. Even a routine maneuver such as a plant-and-cut can result in impact forces that are over
Kristina Amrani, Andrew Gallucci and Marshall Magnusen
, agility, and flexibility, and a balance between anaerobic and aerobic capacities. The physical demands of tennis often lead to both acute and chronic injuries of the upper and lower extremities. Among tennis players, injuries to the lower extremity are most prevalent, followed by the upper extremity, then
Matt Greig, Hannah Emmerson and John McCreadie
:10.1519/JSC.0b013e318267a35c 22820211 10.1519/JSC.0b013e318267a35c 15. Castellano J , Casamichana D , Dellal A . Influence of game format and number of players on heart rate responses and physical demands in small-sided soccer games . J Strength Cond Res . 2013 ; 27 : 1295 – 1303 . PubMed
Catherine Mason and Matt Greig
pace across elements classified as walk, rising trot, sitting trot, and canter. Furthermore, Kraft et al 4 reported that it was only in the dressage discipline where riders exhibited signal alterations of the lumbar disks, attributed to the greater physical demands and intensity of daily training for
Jill L. McNitt-Gray
understand the problem, listen to all involved, and investigate what individuals are currently doing (Figure 1 ). When preparing an athlete for play, it is important to recognize that competitive athletes play to win. Champions will endure extraordinary physical demands to exploit their own strengths and
Javier Raya-González, Luis Suárez-Arrones, Archit Navandar, Carlos Balsalobre-Fernández and Eduardo Sáez de Villarreal
revealed by the high number of injuries in comparison with other activities, such as volleyball or basketball 2 ; in fact, research has shown that the injury rate in soccer is more than 1000 times greater than in high-risk occupations. 3 In addition, the increase in mental and physical demands during a