Description Usage Format Source Examples
One hundred and twenty apparently healthy subjects volunteered to participate in this investigation. All subjects completed pre and post-tests measuring lumbar strength, and the treatment group trained on the BackUp™ Lumbar Extension Dynamometer (1 set of 20 reps twice per week) for 10 weeks.
1 | data("BackUp")
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A matrix with 120 observations on the following 2 variables.
pre
Lumbar extension strength in Nm before 10 weeks of variable resistance lumbar extension exercise training. This is the first column of the matrix.
post
Lumbar extension strength in Nm after 10 weeks of variable resistance lumbar extension exercise training. This is the second column of the matrix.
Simulated; based on "Development of lumbar extension strength: Effect of pelvic stabilization during resistance training." Journal of Back and Musculoskeletal Rehabilitation 16 (2002) pp. 25-31, IOS Press
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