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The purpose of the study was to establish the normative values for vertical ground reaction forces during the most basic step of Bharatanatyam dance. Bharatanatyam involves rthymic tapping of the feet with varying trunk, upper extremity, and hand movements. These dancers are prone to lower extremity injuries. However, there is very little insight into the physical demands of the dance form. Seven experienced Bharatanatyam dancers performed the tatta adavu by tapping their feet repeatedly on a force plate at 2 speeds. Peak ground reaction force was found to be 4 to 5 times the body weight. These high forces repeatedly experienced by the lower extremities could contribute to the higher incidence of lower extremity injuries. Further biomechanical analysis of these dance movements must be undertaken to understand the complexities of the dance form.

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