Effect of two different creatine supplementation products on muscular strength and power

Abstract

To compare different types of creatine supplements on indices of strength and endurance, 48 males (22.3 ± 0.6 y) participated in a 21d study. Subjects consumed creatine in a powder (CRp), in a solid form of gelled candy (CRs) or a carbohydrate placebo was taken in a solid, gelled candy (PLBs) or in powder form (PLBp). All supplements and placebo were fed in a double blind regime at a dose of 20 g/day for 5 days followed by lOg/day for 16 days. Pre‐testing on day 1 included body composition (hydrostatic weighing) and 5, 10‐s sprints on a Monark cycle ergometer. Subjects pedaled against an opposing force of 0.834 N per kg body mass (0.085 kp • kg−1) with a 40‐s rest between each sprint (SPR). On day 2, subjects performed a 1 repetition maximum (1RM) lift on a leg press and 5 sets of 30 maximal voluntary contractions (total = extension + flexion) on a Kin Com Isokinetic Dynamometer at 180°/s with a 45‐s rest between each bout. Statistical analysis showed that CRp and CRs group supplementation resulted in a s...