The Deep Longitudinal Sub-system (DLS) Is a group of muscles that work together to help stabilize the foot and pelvis during the gait cycle. Dysfunction of this system can lead to many different running-related injuries such as peroneal tendonitis, hamstrings strains, plantar fasciitis, shin splints, IT-band syndrome, knee pain, sacro-iliac joint dysfunction and even lower back pain. Is YOUR DLS functioning properly?
