Isokinetic profiling of elite youth footballers: informing selection of a practicable and efficacious isokinetic screening test.

Isokinetic dynamometry represents the clinical gold standard for strength assessment but testing lack consensus. Elite youth football players (n = 28) completed 20 repetitions (analysed as four epochs) of eccentric knee flexor (eccKF) and concentric knee extensor (conKE) trials at 60, 180 and 270°∙s, quantifying peak torque (PT) and functional range (FR). There was a significant (P < 0.

Within- and between-day loading response to ballet choreography.

Overuse pathologies are prevalent in ballet injury. Ten amateur ballet dancers (age: 23.20 ± 3.

Effect of Kinesiology Tape on Tri-Axial Accelerometry During the Dance Aerobic Fitness Test.

Kinesiology tape (KT) is thought to provide greater mechanical support during physical activity, however, there is a paucity of research investigating its application in dance. The study aimed to determine whether KT reduces PlayerLoad (PL) during the Dance Aerobic Fitness Test (DAFT) in addition to examining the relative sensitivity of accelerometer site locations.
Methods: University-level dancers (N = 11; age 18 ± 0.

Isokinetic ankle eversion and inversion strength profiling of female ballet dancers.

Ankle injuries are highly prevalent in ballet, with strength highlighted as a primary risk factor. To profile ankle strength, fourteen female ballet dancers (age: 19.29 ± 1.

The Influence of Soccer Playing Surface on the Loading Response to Ankle (P)Rehabilitation Exercises.

Context: Contemporary synthetic playing surfaces have been associated with an increased risk of ankle injury in the various types of football. Triaxial accelerometers facilitate in vivo assessment of planar mechanical loading on the player.

Objective: To quantify the influence of playing surface on the PlayerLoad elicited during footwork and plyometric drills focused on the mechanism of ankle injury.

The Influence of Playing Surface on the Loading Response to Soccer-Specific Activity.

Context: The influence of playing surface on injury risk in soccer is contentious, and contemporary technologies permit an in vivo assessment of mechanical loading on the player.

Objective: To quantify the influence of playing surface on the PlayerLoad elicited during soccer-specific activity.

Design: Repeated measures, field-based design.

Use of Triaxial Accelerometry During the Dance Aerobic Fitness Test: Considerations for Unit Positioning and Implications for Injury Risk and Performance.

Injury incidence in dance is high, in large part due to the frequency of repetitive and complex movements that require the lower limb to absorb and utilize extreme forces. The aim of this study was to quantify the biomechanical demands of the Dance Aerobic Fitness Test (DAFT) via triaxial accelerometry and utilize it to compare loading at the cervical spine and distal aspect of the lower limb. University dancers (N = 26; age: 20.

The Influence of Circadian Variation on Etiological Markers of Ankle Injury.

Clinical and functional assessments are performed regularly in sporting environments to screen for performance deficits and injury risk. Circadian rhythms have been demonstrated to affect human performance; however, the influence of time of day on a battery of multiple ankle injury risk factors has yet to be established within athletic populations. To investigate the influence of circadian variation on a battery of tests used to screen for ankle etiological risk factors.

Physical Response to a Simulated Period of Soccer-Specific Fixture Congestion.

Page, RM, Marrin, K, Brogden, CM, and Greig, M. Physical response to a simulated period of soccer-specific fixture congestion. J Strength Cond Res 33(4): 1075-1085, 2019-The aim of this study was to assess the physiological, perceptual, and mechanical measures associated with the completion of a simulated period of short-term soccer-specific fixture congestion.

The biomechanical and physiological response to repeated soccer-specific simulations interspersed by 48 or 72 hours recovery.

Purpose: To assess the residual fatigue response associated with the completion of two successive soccer-specific exercise protocols (SSEP).

Methods: Twenty male soccer players were pair-matched before completing SSEPs, interspersed by either 48 or 72 h. Outcome variables were measured every 15 min, and comprised uni-axial measures of PlayerLoad, mean (HR) and peak heart rate (HR), blood lactate concentration, mean and peak (V˙O) oxygen consumption, and rating of perceived exertion (RPE).

Biomechanical and Physiological Response to a Contemporary Soccer Match-Play Simulation.

The intermittent activity profile of soccer match play increases the complexity of the physical demands. Laboratory models of soccer match play have value in controlled intervention studies, developed around manipulations of the activity profile to elicit a desired physiological or biomechanical response. Contemporary notational analyses suggest a profile comprising clusters of repeat sprint efforts, with implications for both biomechanical and physiological load.