1. Back Pain in Whitewater Rafting Guides
David M. Jackson, MS, Susan K. Verscheure, PhD, ATC, CAT(c) 
Wilderness & Environmental Medicine 
Volume 17, Issue 3, Pages (September 2006)
DOI: /PR13-05
Copyright © 2006 Wilderness Medical Society Terms and Conditions

2. Figure 1 Histogram of the ages of working river guides (n=390)
Wilderness & Environmental Medicine  , DOI: ( /PR13-05)
Copyright © 2006 Wilderness Medical Society Terms and Conditions

3. Figure 2
Histogram of self-reported ranking of current back pain. Subjects (n=390) were asked to mark on a continuum from “slight” to “extreme,” with numerical indications at whole-number values. The majority of marks were made directly on a whole-number indicator
Wilderness & Environmental Medicine  , DOI: ( /PR13-05)
Copyright © 2006 Wilderness Medical Society Terms and Conditions

4. Figure 3 Self-reported frequency of active recreation
Wilderness & Environmental Medicine  , DOI: ( /PR13-05)
Copyright © 2006 Wilderness Medical Society Terms and Conditions

5. Figure 4 Self-reported frequency of exercise for fitness
Wilderness & Environmental Medicine  , DOI: ( /PR13-05)
Copyright © 2006 Wilderness Medical Society Terms and Conditions

6. Figure 5 Self-reported frequency of trunk muscle exercise
Wilderness & Environmental Medicine  , DOI: ( /PR13-05)
Copyright © 2006 Wilderness Medical Society Terms and Conditions

7. Figure 6 Self-reported frequency of stretching or yoga
Wilderness & Environmental Medicine  , DOI: ( /PR13-05)
Copyright © 2006 Wilderness Medical Society Terms and Conditions