The location of the tibial accelerometer does influence impact acceleration parameters during running

Area of Science:

• Biomechanics
• Sports Medicine
• Running Injury Research

Background:

• Tibial accelerations are linked to running injuries.
• Current research inconsistently places tibial accelerometers proximally or distally.
• This inconsistency may affect data comparability.

Purpose of the Study:

• To determine if accelerometer location on the tibia influences measured acceleration parameters.
• To compare time-domain and frequency-domain parameters between proximal and distal tibial placements.
• To inform standardized accelerometer placement in running studies.

Main Methods:

• Thirty athletes ran at three different speeds (2.22, 2.78, 3.33 m/s).
• Accelerometers were attached to the forehead, proximal tibia, and distal tibia.
• Time-domain (peak acceleration, shock attenuation) and frequency-domain parameters were analyzed.

Main Results:

• The distal tibial accelerometer recorded significantly higher peak acceleration and shock attenuation than the proximal placement.
• Distal placement yielded greater low-frequency domain parameters (peak frequency, peak power, signal magnitude).
• No significant differences were found in high-frequency domain parameters between locations.

Conclusions:

• Tibial accelerometer location demonstrably influences measured acceleration parameters.
• Distal tibial placement provides higher values for key running impact metrics.
• Standardized accelerometer placement is crucial for consistent and comparable running injury research.