- http://sportsmedicine.about.com/od/fitnessevalandassessment/a/Body_Fat_Comp.htm http://generalfitness.tripod.com/id4.html
- http://weightloss.about.com/od/backtobasics/f/bodycomp.htm
- http://www.topendsports.com/testing/bodycomp.htm
- http://www.healthyflesh.com/cardiovascular-endurance/
- http://www.getfit.com/goals/conditioning/endurance/cardiovascular.htm
- http://www.physicallytrained.com/fm21-20/physical-fitness-training/muscular-endurance-and-strength.shtml