Effects of 10k distance running on lower limb biomechanics and plantar pressure distribution.

After a 10 km treadmill run, bilateral hip and knee adduction-abduction range of motion increased significantly.

• Twenty healthy male recreational runners completed a 10 km treadmill run at 12 km/h.
• Kinematics were collected pre- and post-run with a Vicon motion capture system.
• Joint ROM was compared pre vs post with paired t-tests.

Left hip internal-external rotation ROM decreased after the 10 km run.

• This contrasted with the increased adduction-abduction ROM at the hip and knee.
• Paired t-tests were used to analyze ROM changes in 20 male recreational runners.

Hip joint moments changed after the run, with different patterns on the right and left sides.

• Right hip extension, abduction, and internal rotation moments increased.
• Left hip extension moment increased, but left hip abduction and internal rotation moments decreased.
• Moments were derived using a Kistler force platform with kinematic data and analyzed with paired t-tests and SPM1d.

Knee joint moments changed after the 10 km run, with increased abduction moments bilaterally.

• Right knee flexion moment decreased and right knee abduction moment increased.
• Left knee abduction moment increased.

Right ankle plantarflexion moment increased significantly after the run.

• This was the ankle moment change reported in the abstract.
• Time-series differences were examined using Statistical Parametric Mapping (SPM1d).

Plantar loading shifted after the 10 km run, with higher total pressure in early stance and higher medial heel pressure.

• Plantar pressure was measured with a Footscan pressure plate pre- and post-run.
• Total pressure increased during early stance.
• Medial heel pressure was elevated.

Pressure decreased in the first metatarsal and other toe regions after the run.

• This forefoot/toe unloading occurred alongside increased medial heel and early-stance loading.
• Findings are from 20 healthy male recreational runners.

The authors conclude that the fatigue-related biomechanical changes may be associated with increased injury risk and should inform training and injury prevention.

• A 10k run led to significant alterations in lower limb joint control, moment distribution, and plantar pressure patterns.
• The study aimed to provide a theoretical basis for injury prevention.
• Injury risk was not directly measured; the link is described as possible association.