['To determine if isometric (static) strength accurately predicts dynamic lifting capacity.', '107,755 male and 23,078 female prospective workers taking part in a post-offer employment test.', 'Subjects were tested for strength three standard static lifts and attained physical maxima for four dynamic lifts.', 'The data confirms modest correlations between isometric and dynamic measures. However, the standard errors of estimate for all isometric-to-dynamic predictions make such predictions meaningless for the practical purpose for which they are most commonly used.'] Does isometric strength assessment , part I : static testing accurately predict dynamic lifting capacity?