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Table 1 Task parameters: target versus actual (Mean ± SEM reported)

From: The interaction of force and repetition on musculoskeletal and neural tissue responses and sensorimotor behavior in a rat model of work-related musculoskeletal disorders

   LRLF   HRLF   LRHF   HRHF
  Successful reps/min (n = 12) All reps/min (n = 12) Grasp force% MPF (n = 12) Successful reps/min (n = 24) All reps/min (n = 24) Grasp force% MPF (n = 15) Successful reps/min (n = 12) All reps/min (n = 12) Grasp force% MPF (n = 12) Successful reps/min (n = 24) All reps/min (n = 24) Grasp force% MPF (n = 24)
Target values 2 2 15 ± 5% MPF (a mean of 0.23 N) 4 4 15 ± 5% MPF (a mean of 0.23 N) 2 2 53 ± 5% MPF (a mean of 1.02 N) 4 4 53 ± 5% MPF (a mean of 1.02 N)
Week 1 actual values 2.01 ± 0.33 3.03 ± 0.12 15.78 ± 4.54 2.28 ± 0.34 6.48 ± 0.47 20.07 ± 1.61 1.31 ± 0.38 9.0 ± 0.68 41.90 ± 2.61 2.31 ± 0.52 10.8 ± 0.80 39.88 ± 2.22
Week 12 actual values 1.39 ± 0.06 3.38 ± 0.31 13.68 ± 0.89 2.06 ± 0.39 5.04 ± 0.45 14.95 ± 1.03 1.46 ± 0.25 5.79 ± 0.97 46.22 ± 6.24 2.89 ± 0.46 9.27 ± 0.64 48.64 ± 0.90
  1. All Reps = all repetitions per minute, both successful and unsuccessful; Grasp Force =% maximum isometric pulling force on lever bar; HRLF = high repetition low force task: HRHF = high repetition high force task; LRLF = low repetition low force task; LRHF = low repetition high force task; MPF = average maximum isometric pulling force for these young adult rats, which was determined to be 1.93 Newtons on the last day of training by a subset of rats; n = number of rats analyzed for this data; N = Newtons. Week 1 rather than week 0 is reported as this was the first week that the rats actually performed the tasks for 2 hours/day, 3 days/week.