1. Tightness or stiffness in the muscles of the lower back region, often causing discomfort or pain
She experienced lumbar muscle tension after sitting at her desk all day.
Ela experimentou tensão muscular lombar depois de ficar sentada na sua mesa o dia todo.
2. A condition characterized by involuntary contraction or rigidity of the lumbar muscles
The physiotherapist recommended stretches to relieve his lumbar muscle tension.
O fisioterapeuta recomendou alongamentos para aliviar sua tensão muscular lombar.