Foot Positions Affect Basketball Players With Flatfoot

Effect of Various Initial Foot Positions on Proprioception, Balance, Jump, and Electromyographical Muscle Activity in Basketball Players With Flatfoot and Chronic Ankle Instability: A Cross-sectional Study

This study investigated the effect of various initial foot positions on knee and ankle proprioception, balance, dynamic balance, vertical jump, and electromyographical muscle activity in basketball players with FF.

Objective: To investigate the effect of various initial foot positions on knee and ankle proprioception, balance, dynamic balance, vertical jump, and electromyographical muscle activity in basketball players with FF.

Methods: Eighty-four basketball players with chronic ankle instability were distributed to three groups (28 with flexible FF, 28 with rigid FF, and 28 without FF). The outcome measures will include static and dynamic balance, knee and ankle proprioception, vertical jump, and electromyography (EMG) of ankle muscles (including gastrocnemius (GE), soleus (SOL), tibialis anterior (TA), and peroneus longus (PL) muscles)

Inclusion Criteria:

• The presence of flatfoot in the dominant leg.
• The presence of chonic ankle instability

Exclusion Criteria:

• The exclusion criteria were the existence of limited hallux dorsiflexion
• previous hip, pelvis, knee, or foot surgeries within the last year; obesity or pregnancy; leg-length discrepancies;
• Had any vestibular disorder neurological disorder, brain concussion within the last 3 months that may cause balance impairment; or administering any drugs that could disturb alertness or balance