Labels:bench | book | hakham | lodestone | person | plaything | reckoner | sculpture | sky | television receiver OCR: 540 SECTION CHAPTER BACK PAIN How can computer use affect my back and spine? Back pain can FIGURE 9.56 be caused by many factors including poor posture and careless lifting of Bad posture can lead to back heavy objects pain What about posture? Doctors and physical therapists commonly use the term flex- forward posture to describe the sitting posture shared by many computer users The layman's term computer slump refers to the same thing: sitting hunched over computer keyboard with your neck craned for- ward (Figure 9-56 Habitual slouching can lead to stiffness and muscle tenderness Left uncor- rected the problem can cause nerve irritation that spreads down the arms and back. Back problems caused by habitual flex- forward posture are sometimes referred as T4 syndrome named after the fourth c ...
