title: Fatigue does not conjointly alter postural and cognitive performance when standing in a shooting position under dual-task conditions.
abstract: This study investigated the effects of fatigue on balance control and cognitive performance in a standing shooting position. Nineteen soldiers were asked to stand while holding a rifle (single task - ST). They also had to perform this postural task while simultaneously completing a cognitive task (dual task - DT). Both the ST and DT were performed in pre- and post-fatigue conditions. In pre-fatigue, participants achieved better balance control in the DT than in the ST, thus suggesting that the increased cognitive activity associated with the DT improves balance control by shifting the attentional focus away from a highly automatised activity. In post-fatigue, balance control was degraded in both the ST and DT, while reaction time was enhanced in the first minutes following the fatiguing exercise without affecting the accuracy of response in the cognitive task, which highlights the relative independent effects of fatigue on balance control and cognitive performance.
authors.affiliation: a Department of physical activity and sport sciences , University of Valencia , Valencia , Spain.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Bermejo
authors.affiliation: b Department of Teaching of Musical, Visual and Corporal Expression , University of Valencia , Valencia , Spain.
authors.forename: Xavier
authors.initials: X
authors.lastname: García-Massó
authors.affiliation: c Laboratoire Mouvement, Equilibre, Performance, Santé (EA 4445) , Université de Pau et des Pays de l'Adour, Département STAPS , Tarbes , France.
authors.forename: Thierry
authors.initials: T
authors.lastname: Paillard
authors.affiliation: c Laboratoire Mouvement, Equilibre, Performance, Santé (EA 4445) , Université de Pau et des Pays de l'Adour, Département STAPS , Tarbes , France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Noé
mesh_terms: D000328:Adult; D003071:Cognition / Q000502:physiology*; D005221:Fatigue / Q000503:physiopathology*; D005389:Firearms; D006801:Humans; D008297:Male; D008889:Military Personnel / Q000523:psychology*; D004856:Postural Balance / Q000502:physiology*; D013647:Task Performance and Analysis
keywords: Physical fatigue; balance control; dual task; shooting position