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Cybex II Isokinetic Dynamometer (Lumex Corp. Ronkonkoma, NY) tests for the upper extremity strength of eight professional baseball players, together with radar gun measurements of their individual throwing speeds, were subjected to statistical analysis. Results of simple and multiple regression analysis showed a relationship between the strength of the elbow extension and wrist extension movements and throwing speed.

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Modern car safety seats are portable and babies are commonly left strapped in them in the home while they finish their sleep or parents attend to household chores. We report on two infants who sustained head injuries when falling from a surface where they had been restrained in a car seat. There have been few reports on injuries associated with car safety seat misuse outside a vehicle. Graham and colleagues2 reported that, among children under twentyfour months presenting with trauma to the emergency department in Oklahoma, USA, 7% of injuries were caused by car safety seat misuse. Half of these (14 patients) were non-occupant injuries and all of these were in infants under one year old and were caused by falls. The car seat had been placed on the car roof or bonnet (5 cases), on a table (5 cases), or in a shopping trolley (1 case), or the car seat had been dropped (3 cases). The injuries included depressed skull fracture with epidural haematoma (1 case), linear skull fracture (3 cases), cervical vertebral fracture (1 case) and simple head injury (9 cases). There is also a report of a seven-month-old infant who fell onto the floor from the top