Effects of isokinetic ankle fatigue on the maintenance of balance and postural limits  James A. Yaggie, PhD, RKT, Stephen J. McGregor, PhD  Archives of Physical Medicine and Rehabilitation  Volume 83, Issue 2, Pages 224-228 (February 2002) DOI: 10.1053/apmr.2002.28032 Copyright © 2002 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig. 1 Quiet stance parameters. Subjects performed a 25-second unilateral quiet stance on the force platform with the dominant foot placed along the anteroposterior axis of the plate. The nonsupporting limb was flexed 45° at the knee, and the arms were placed across the chest eyes fixed on a target 10m in front. Three tests were collected for each condition. (A) ML sway, FA sway, vector displacement and (B) total sway. Legend: ■, ML sway; □, FA sway; ▩, vector displacement. *Denotes significant difference from PF condition (α <.05). Archives of Physical Medicine and Rehabilitation 2002 83, 224-228DOI: (10.1053/apmr.2002.28032) Copyright © 2002 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig. 2 Lean test parameters. Subjects leaned forward at the dominant ankle for 10 seconds while in a unilateral stance. The nonsupporting limb was flexed 45° at the knee, and the arms were placed across the chest, eyes fixed on a target 10m in front. Three tests were collected for each condition. (A) ML sway, FA sway, vector displacement and (B) total sway. Legend: ■, ML sway; □, FA sway; ▩, vector displacement; *Denotes significant difference from PF condition (α <.05). Archives of Physical Medicine and Rehabilitation 2002 83, 224-228DOI: (10.1053/apmr.2002.28032) Copyright © 2002 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig. 3 Mean FA and ML displacement across time series (cm). □; FA displacement; ■, ML displacement. *Denotes significant difference from PF condition (α <.05). Archives of Physical Medicine and Rehabilitation 2002 83, 224-228DOI: (10.1053/apmr.2002.28032) Copyright © 2002 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions