The effect of a forearm strap on wrist - extensor strength*

Area of Science:

• Orthopedics
• Sports Medicine
• Biomechanics

Background:

• Wrist extensor strength is crucial for many athletic activities.
• The use of external supports, like forearm straps, is common in sports to enhance performance or provide stability.
• The specific effects of forearm straps on wrist extensor strength, particularly at varying speeds, require further investigation.

Purpose of the Study:

• To investigate the effect of a forearm strap on wrist extensor strength.
• To determine if forearm strap use influences strength differently at varying angular velocities.
• To explore potential mechanisms behind any observed strength changes.

Main Methods:

• Thirty healthy subjects without elbow pathology participated.
• Isokinetic dynamometry was used to measure wrist extensor strength at 30 and 120 degrees/sec.
• Subjects were tested under both control (no strap) and experimental (with strap) conditions.

Main Results:

• No significant difference in wrist extensor strength was found at the slower speed (30 degrees/sec).
• A statistically significant increase in wrist extensor strength was observed at the faster speed (120 degrees/sec) when using the forearm strap.
• Sequential trials method was used for data plotting and analysis.

Conclusions:

• The forearm strap did not affect wrist extensor strength at slower speeds.
• The forearm strap significantly enhanced wrist extensor strength at faster speeds.
• Sensory stimulation and pressure from the strap may facilitate strength gains at higher velocities, warranting further research.