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  • Title: Hitting weighted baseball enhances the experience of bat-ball contacts.
    Author: Yang WW, Liu YC, Chen WH, Tai HH, Sato K, Ma HP, Liu C.
    Journal: Sports Biomech; 2024 Jun; 23(6):728-739. PubMed ID: 33663343.
    Abstract:
    Bat-ball contacts are critical in the baseball hitting process. However, an effective training method for increasing the impact perception of a bat-ball contact is currently unavailable. Although not widely used, hitting a stationary weighted baseball can be an appropriate method for batters to simulate the perception of hitting a moving baseball. Therefore, swing velocity, wrist vibration, and forearm muscle activation for hitting stationary weighted, stationary regulation, and pitched baseballs were investigated in this study. Twelve position players hit a stationary weighted, stationary regulation, and pitched baseball at a speed of 70.28 ± 3.84 km/h in a random order. The swing velocity, wrist vibration, forearm muscle activation, and co-contraction ratio during hitting phases were analysed. The results indicated that the swing velocity during each specific phase demonstrated no significant differences between the different conditions. Hitting weighted and pitched baseballs caused higher wrist vibration, muscle activation, and co-contraction ratio during the contact phase than hitting regulation balls (p < 0.05). The conclusion was that hitting weighted baseballs could mimic the impact condition of hitting pitched baseballs without changing the pattern of swing velocity, which suggested that this method has potential as a hitting drill for improving hitting perception at bat-ball contact.
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