Strain energy in human tibia during different exercises with adjustable leg weights: a subject-specific computational...

Area of Science:

• Biomechanics
• Computational modeling
• Exercise physiology

Background:

• Tibia strength is crucial for preventing stress injuries.
• Identifying optimal exercise regimens for tibial health remains a challenge.

Purpose of the Study:

• To investigate tibial responses to varied exercise regimens using subject-specific computational modeling.
• To assess the effects of different exercises and adjustable leg weights on tibial strain energy density (SED).

Main Methods:

• Combined subject-specific neuro-musculoskeletal and finite element models.
• Analyzed tibial SED under jumping, landing, squatting, and walking exercises.
• Evaluated impact of adjustable leg weights at shank versus thigh sites.

Main Results:

• A non-linear relationship between load weight and SED increase was observed, with 4% body weight identified as optimal.
• Load carriage sites significantly influenced SED levels, highlighting the need for individualized regimens.
• Gastrocnemius, soleus, and peroneal muscles were key contributors to tibial SED.

Conclusions:

• Subject-specific computational models are useful for assessing biomechanical impacts of exercise variations.
• Customizing exercise programs based on individual biomechanical properties can maximize benefits and reduce injury risks.