Metabolic and Biomechanical Effects of Velocity and Weight Support Using a Lower- Body Positive Pressure Device During Walking  Alena M. Grabowski, PhD  Archives of Physical Medicine and Rehabilitation  Volume 91, Issue 6, Pages 951-957 (June 2010) DOI: 10.1016/j.apmr.2010.02.007 Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 1 (A) Schematic depiction of the LBPP device, (B) LBPP device. Archives of Physical Medicine and Rehabilitation 2010 91, 951-957DOI: (10.1016/j.apmr.2010.02.007) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 2 Net metabolic power for 1.00, 1.25, and 1.50m/s at different fractions of BW. Values are mean ± SEM. Abbreviation: SEM, standard error of the mean. Archives of Physical Medicine and Rehabilitation 2010 91, 951-957DOI: (10.1016/j.apmr.2010.02.007) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 3 Net metabolic power for 1.00, 1.25, and 1.50m/s at different fractions of BW. Values are mean ± SEM. The linear regression equations that describe NMP in terms of BW at each velocity are as follows: 1.00m/s: NMP=(1.36 × BW)+.996, (R2=.46); 1.25m/s: NMP=(1.58 × BW)+1.28, (R2=.47); 1.50m/s: NMP=(1.74 × BW)+1.56, (R2=.43). Abbreviation: SEM, standard error of the mean. Archives of Physical Medicine and Rehabilitation 2010 91, 951-957DOI: (10.1016/j.apmr.2010.02.007) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 4 Contour plot of NMP in W/kg as a function of v and the fraction of BW. The plot represents mean NMP described by the multiple linear regression equation NMP=(1.59 × v) + (1.59 × BW) – .72. Archives of Physical Medicine and Rehabilitation 2010 91, 951-957DOI: (10.1016/j.apmr.2010.02.007) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 5 (A) First (P1) and (B) second (P2) peak vertical GRFs for 1.00, 1.25, and 1.50m/s at different fractions of BW. Values are mean ± SEM. Inset shows a typical GRF trace during the stance phase with P1 and P2 indicated. The linear regression equations that describe the peak vertical GRFs in terms of BW at each velocity are as follows: 1.00m/s: P1=(610 × BW)+62, (R2=.76), P2=(697 × BW)+21, (R2=.72); 1.25m/s: P1=(608 · BW)+107, (R2=.74), P2=(717 × BW)+18, (R2=.74); 1.50m/s: P1=(632 × BW)+153, (R2=.73), P2=(706 × BW)+22, (R2=.70). Abbreviation: SEM, standard error of the mean. Archives of Physical Medicine and Rehabilitation 2010 91, 951-957DOI: (10.1016/j.apmr.2010.02.007) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions

Fig 6 Contour plot of the first peak vertical ground reaction force (P1) in N as a function of v and the fraction of BW. The plot represents mean P1 force described by the multiple linear regression equation P1=(202.9 × v)+(619.5 × BW)–145.9, (R2=.75). Archives of Physical Medicine and Rehabilitation 2010 91, 951-957DOI: (10.1016/j.apmr.2010.02.007) Copyright © 2010 American Congress of Rehabilitation Medicine Terms and Conditions