Social and Behavioral Sciences Commons^™

Effect Of Concentric And Eccentric Velocity During Heavy-Load Non-Ballistic Elbow Flexion Resistance Exercise, John Sampson, Allison Donohoe, Herbert Groeller

Faculty of Social Sciences - Papers (Archive)

Objectives: The current study provided a longitudinal evaluation of the anthropometric and fitness characteristics in junior rugby league players across three annual-age categories (i.e., under 13s, 14s and 15s) considering playing position and selection level.

Design: Longitudinal design.

Methods: Eighty-one junior rugby league players selected to a talent development programme were tracked over a two year period. Anthropometric (height, sitting height, body mass and sum of four skinfolds) and fitness (lower and upper body power, speed, change of direction speed and maximal aerobic power) characteristics were measured on three occasions (i.e., under 13s, 14s and 15s). Repeated measures multivariate analysis …

Chaos In Balance: Non-Linear Measures Of Postural Control Predict Individual Variations In Visual Illusions Of Motion, Deborah Apthorp, Fintan Nagle, Stephen Palmisano

Faculty of Social Sciences - Papers (Archive)

Visually-induced illusions of self-motion (vection) can be compelling for some people, but they are subject to large individual variations in strength. Do these variations depend, at least in part, on the extent to which people rely on vision to maintain their postural stability? We investigated by comparing physical posture measures to subjective vection ratings. Using a Bertec balance plate in a brightly-lit room, we measured 13 participants' excursions of the centre of foot pressure (CoP) over a 60-second period with eyes open and with eyes closed during quiet stance. Subsequently, we collected vection strength ratings for large optic flow displays …