2026 Volume 4 Issue 1 Pages 13-20
Purpose: The purpose of this case report was to examine the long-term relationship between peak time lag of the sternum rotation (PTS) and peak angular velocity of the sacrum rotation (PAS) during gait and lumbar symptoms in a mogul skier with low back pain.
Case: This case report describes an international-level Japanese mogul skier in his 20s with low back pain. After starting physical therapy, the low back pain decreased during the non-competition period B1 compared to the competition period A1, and PAS during gait decreased. In the subsequent competition period A2, neurological symptoms appeared, and there was an increase in PTS during gait, leading to a diagnosis of lumbar disc herniation. Later, the neurological symptoms disappeared during the non-competition period C.
Conclusions: It was suggested that PTS and PAS during gait could detect precursor signs before the onset of Lumbar disc herniation in athletes with low back pain.
