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Bio-mechanic Study

Dr. Nicole Andrews  
BOccThy(Hons), PhD
Faculty of Health and Behavioural Sciences, 
The University of Queensland
After analysing the video footage of a batter using the Power Bat and a regular cricket bat, some differences were noted in the biomechanics between the two. The most considerable that were found so far are the angles of the wrist while holding the bat and the bat angle in preparation for the swing phase. The angle from forearm to wrist was 164°(closer to 180°) the original bat was 157° indicating a 7° difference (Figure 1).

Figure 1

REGULAR BAT
POWER BAT
There is evidence to suggest alleviating the strain on the hand and wrist may be beneficial for cricket players since hand and wrist injuries are common within the sport. Most available research attributes the majority of these injuries to fielding actions (Ahearn, Bhatia, & Griffin, 2015). However, reducing strain on wrists while batting maybe beneficial for players who are already injured or fatigued from fielding in previous innings. High school cricket players were surveyed and they noted a more natural and comfortable grip while holding the Power Bat.

When the forearm is at 0°, the curve of the Power Bat allows for 11° increase in range of motion (ROM) when compared to a standard bat (Figure 2). Further study needs to be conducted to assess the effect this difference in ROM has on power generation. Studies note ROM to be vital in increasing bat swing velocity (Szymanski, DeRenne, & Spaniol, 2009). This study suggests specific weight training to improve ROM and therefore increase bat swing. If the Power Bat can provide an increased ROM, this may be advantageous in power generation. Further experimental studies are recommended to observe and document differences in force production. It would also be interesting to note differences in functional variability in novice vs skilled batsmen when using the Power Bat.

Figure 2

REGULAR BAT
POWER BAT
From initial findings it can be concluded that the Power Bat definitely has potential to provide greater power generation for a batter. There are many studies available analysing the design of a cricket bat, however these studies focus on the design of the blade portion of the bat and the materials used (Kumar Katiyar, Tariq Murtaza, & Ali, 1992), (Eftaxiopoulou, Narayanan, Dear, & Bull, 2011), (Eftaxiopoulou, Theofano, Persad & Bull, 2016). Further study on the handle design and its implications on the power production is required.

References

Ahearn, N., Bhatia, R., & Griffin, S. (2015). Hand And Wrist Injuries In Professional County Cricket. Hand Surgery, 20(01), 89–92. https://doi.org/10.1142/s0218810415500124

Eftaxiopoulou, T., Narayanan, A., Dear, J. P., & Bull, A. M. J. (2011). A Performance Comparison Between Cricket Bat Designs. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 226(1), 16–23. https://doi.org/10.1177/1754337111425629

Eftaxiopoulou, Theofano, Persad, L., & Bull, A. M. (2016). Assessment Of Performance Parameters Of A Series Of Five ‘Historical’ Cricket Bat Designs. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 231(1), 57–62. https://doi.org/10.1177/1754337116638970

Kumar Katiyar, A., Tariq Murtaza, S., & Ali, S. (1992). ETFE handles aggressive fluids. Materials & Design, 13(6), 365. https://doi.org/10.1016/0261-3069(92)90014-9 Szymanski, D. J., DeRenne, C., & Spaniol, F. J. (2009). Contributing Factors for Increased BatSwing Velocity. Journal of Strength

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