1. How is walking speed related to muscle strength
How is walking speed related to muscle strength? A study of healthy persons and persons with late effects of polio1 
Carin Willén, RPT, PhD, Katarina Stibrant Sunnerhagen, MD, PhD, Claes Ekman, Fil.lic., Gunnar Grimby, MD, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 85, Issue 12, Pages (December 2004)
DOI: /j.apmr

2. Fig 1
Values for muscle strength of various muscle groups in subjects with late polio in percentage of values in healthy individuals in corresponding age group and sex. NOTE. Median and 5th, 25th, 75th, and 95th percentile values are given. Abbreviations: ext, extension; flex, flexion; L, left; R, right.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )

3. Fig 2
Nonlinear regression curves for maximal walking speed and strength index in healthy individuals and subjects with late polio. The dotted line represents the 90% values of the asymptote.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )

4. Fig 3
Nonlinear regression curves for maximal walking speed and strength index in healthy subjects younger than 60 years (young; n=69) and 60 years and older (old; n=75).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )

5. Fig 4
Nonlinear regression curve for maximal walking speed and strength index in subjects with late polio walking (A) without a device (n=133) and (B) with a device (n=101).
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )