Biomechanical mechanisms of jumping performance in youth elite female soccer players.

We aimed to determine key biomechanical parameters explaining age-related jumping performance differences in youth elite female soccer players. Multiple biomechanical parameters from countermovement (CMJ) squat (SJ) and drop (DJ) jump testing of elite female soccer players (n = 60) within the same national training centre were analysed across ages 9-11y, 12-14y and 15-19y. Effects of age group and jump type on jump height were found, with the older jumping higher than the younger groups in all jumps (P < 0.

The Magnitude and Time Course of Muscle Cross-section Decrease in Intensive Care Unit Patients.

Objective: Bedriddenness and immobilization of patients at an intensive care unit may result in muscle atrophy and devaluation in quality of life. The exact effect of immobilization on intensive care unit patients is not known. The aim of this study was to investigate the magnitude and time course of muscle cross-section decrease in acute critically ill patients admitted to the intensive care unit.

Switch hands! Mapping proactive and reactive cognitive control across the life span.

We investigated the effects of age on proactive and reactive cognitive control in a large population sample of 809 individuals, ranging in age between 5 and 97 years. For that purpose, we used an anticue paradigm, which required a consistent remapping of cue location and response hand: Left-sided cues required right-hand responses and vice versa. After a random preparation interval of 100-850 ms, these anticues were followed by a target stimulus, which prompted a response with the index or middle finger of 1 of 2 hands.

Screening Poststroke Fatigue; Feasibility and Validation of an Instrument for the Screening of Poststroke Fatigue throughout the Rehabilitation Process.

Objective: Our objective is to investigate the feasibility and validity of a new instrument to screen for determinants of poststroke fatigue during the rehabilitation process.

Design And Setting: This prospective cohort study was conducted within the stroke department of a rehabilitation center.

Participants: The participants in the study were postacute adult stroke patients.

Allocentric coding in ventral and dorsal routes during real-time reaching: Evidence from imaging-guided multi-site brain stimulation.

Recent evidence has revealed an advantage for movements to last target positions in a structured visual display, suggesting a mediating role of allocentric, in addition to egocentric, information in goal-directed reaching. This notion is accommodated by the recently updated perception-action model (Milner and Goodale, 2008), which postulates functional roles of ventral and dorsal neural areas in allocentric coding. In the present study, we used imaging-guided multi-site continuous theta burst stimulation (cTBS) over regions of the ventral and dorsal processing streams to unravel their functional contribution on visually guided reaching in two display conditions: the "egocentric" condition where the target appeared in an empty display and the "allocentric" condition where the target appeared in a structured display with placeholders marking possible target locations.