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    Université de Fribourg

    No evidence that frontal optical flow affects perceived locomotor speed and locomotor biomechanics when running on a treadmill

    Caramenti, Martina ; Lafortuna, Claudio L. ; Mugellini, Elena ; Khaled, Omar Abou ; Bresciani, Jean-Pierre ; Dubois, Amandine

    In: Applied Sciences, 2019, vol. 9, no. 21, p. 4589

    We investigated how the presentation and the manipulation of an optical flow while running on a treadmill affect perceived locomotor speed (Experiment 1) and gait parameters (Experiment 2). In Experiment 1, 12 healthy participants were instructed to run at an imposed speed and to focus on their sensorimotor sensations to be able to reproduce this running speed later. After a pause, they had...

    Université de Fribourg

    Regular physical activity modulates perceived visual speed when running in treadmill-mediated virtual environments

    Caramenti, Martina ; Lafortuna, Claudio L. ; Mugellini, Elena ; Khaled, Omar Abou ; Bresciani, Jean-Pierre ; Dubois, Amandine

    In: PLOS ONE, 2019, vol. 14, no. 6, p. e0219017

    In virtual reality, visual speed is usually underestimated relative to locomotor speed. Here we investigated how physical activity and fitness affect perceived visual speed when running in a treadmill-mediated virtual environment. Thirty healthy participants (ten sedentary individuals, ten team sport players and ten expert runners) ran on a treadmill at two different speeds (8, 12km/h) in...

    Université de Fribourg

    Matching optical flow to motor speed in virtual reality while running on a treadmill

    Caramenti, Martina ; Lafortuna, Claudio L. ; Mugellini, Elena ; Abou Khaled, Omar ; Bresciani, Jean-Pierre ; Dubois, Amandine

    In: PLOS ONE, 2018, vol. 13, no. 4, p. e0195781

    We investigated how visual and kinaesthetic/efferent information is integrated for speed perception in running. Twelve moderately trained to trained subjects ran on a treadmill at three different speeds (8, 10, 12 km/h) in front of a moving virtual scene. They were asked to match the visual speed of the scene to their running speed–i.e., treadmill’s speed. For each trial, participants...