"But on a scale of 0 to 10, how do you rate your pain?" asked the nurse. My daughter's tear-streaked face creased with confusion. "What does 10 mean?" "10 is the worst pain you can imagine." ...

Methods Thirty-six adolescent male rowers reporting LBP participated ... The primary outcome of the study was pain intensity as measured by the Numeric Pain Rating Scale during a 15 min ergometer ...