SUMMARY An investigation was carried out to determine the effect of the independent variables of sex, weight carried and distance moved on the following dependent variables for three-dimensional hand movements: (1) maximum acceleration, (2) maximum velocity, (3) ratio between maximum velocity and average velocity, (4) per cent time until maximum acceleration is reached, (5) per cent time until maximum velocity is reached. Additional objectives were to determine the pattern and shape of acceleration and velocity curves, and to develop mathematical relationships to evaluate the velocity and acceleration at any time during a three-dimensional hand movement.