The Effects of Task Complexity on Brake Response Time Before and After Primary Right Total Knee Arthroplasty Carlos J. Marques, MSc, PT, Jan Cabri, PhD,

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The Effects of Task Complexity on Brake Response Time Before and After Primary Right Total Knee Arthroplasty Carlos J. Marques, MSc, PT, Jan Cabri, PhD, João Barreiros, PhD, Ana I. Carita, PhD, Christian Friesecke, MD, Jochen F. Loehr, MD Archives of Physical Medicine and Rehabilitation Volume 89, Issue 5, Pages 851-855 (May 2008) DOI: 10.1016/j.apmr.2007.10.025 Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 1 Car simulator with the Biopac measurement system. Archives of Physical Medicine and Rehabilitation 2008 89, 851-855DOI: (10.1016/j.apmr.2007.10.025) Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 2 Pedal layout: front view (I) with (A) the accelerator and (B) the brake pedal sizes and lateral separation. Side view (II) with the inclination of the pedals and the positive perpendicular separation of the brake pedal. Archives of Physical Medicine and Rehabilitation 2008 89, 851-855DOI: (10.1016/j.apmr.2007.10.025) Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 3 Overview of the pedal with (A) the right foot pressing the accelerator and (B) the foot pressing the brake pedal. Archives of Physical Medicine and Rehabilitation 2008 89, 851-855DOI: (10.1016/j.apmr.2007.10.025) Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 4 Steering wheel positions in the complex task: (A) start position and (B) end position. Archives of Physical Medicine and Rehabilitation 2008 89, 851-855DOI: (10.1016/j.apmr.2007.10.025) Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 5 Mean BRT values across the 3 measurements: simple versus complex task. *Significant difference. Archives of Physical Medicine and Rehabilitation 2008 89, 851-855DOI: (10.1016/j.apmr.2007.10.025) Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 6 Mean RT values across the 3 measurements: simple versus complex task. *Significant difference. Archives of Physical Medicine and Rehabilitation 2008 89, 851-855DOI: (10.1016/j.apmr.2007.10.025) Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 7 Mean movement time (MT) values across the 3 measurements: simple versus complex task. *Significant difference. Archives of Physical Medicine and Rehabilitation 2008 89, 851-855DOI: (10.1016/j.apmr.2007.10.025) Copyright © 2008 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions