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The radar gun is a valid and practically feasible tool to measure sprinting speed and kinetics among athletes. However, its reliability in youth populations, particularly females, is unknown. Therefore, this study aimed to evaluate the intraday and inter-day reliability of sprinting kinetics using a radar gun to measure force ("Fo"), theoretical velocity ("Vo"), maximal velocity ("Vmax"), power max ("Pmax") and split times (0-30 m) in young female athletes. Twenty-nine young female athletes aged 13.7 ± 0.89 years (height 1.62 ± 0.06 m; weight 51.7 ± 8.41 kg) from sports teams at a private girl's college participated. The assessment included four sprints over 30 m (separated by 7 days) for inter-day analysis and two sprints over 30 m on the same day for intraday analysis. Moderate to strong intraclass correlation coefficient 0.74 to 0.98 with a coefficient of variation ranging from 1.70% to 12.70% across all kinetic variables were reported for both intraday and inter-day reliability. The smallest worthwhile change ranged from 1.17% to 6.89%. All tests were identified as having acceptable reliability.

The article discusses a study that examines the role of rational power and mobility on velocity of throwing and striking, conducted on 21 professional and under-19 club level cricketers. This was conducted on the basis that lack of flexibility results in decrease of performance. It was observed that external hip rotation on dominant side and bilateral thoracic rotation varies between slow and fast throwers and that faster ROM may not increase throwing velocity.