The Effect of Creatine Loading on Body Mass and Vertical Jump of Female Athletes

Effects of Creatine Monohydrate Supplementation on Simulated Soccer Performance

“…In the present study, explosive leg power, as measured by the VJ test during the BEAST protocol, was not enhanced by acute Cr supplementation. These findings are in agreement with Miszko et al 42 and Mujika et al 16 , who found no change in VJ or counter movement jumps (CMJ) respectively, after acute short-term Cr ingestion. In contrast, Ostojic 17 reported a 10.8% increase in VJ performance after 7 days of Cr supplementation in young soccer players.…”

“…However, following Cr supplementation, there were no significant Group*Trial or Group*Trial*Interval interactions for any of the four BEAST performance measures (mean circuit time, 12 m sprint, 20 m sprint and VJ), body-mass or HR values, suggesting that Cr had no physical performance enhancing effect during the 90 minute BEAST protocol. Although most previous soccer-related Cr studies have not used soccer-specific (jumps, turns, walking, running, sprinting etc) protocols of sufficient duration (90 mins), the results of the present study are in agreement with previous Cr studies that have utilised isolated physical tasks involving soccer players 18 or other team sport athletes 8,36,41,42 . However, the present results oppose the reported enhancement in sprint performance seen in other soccer-related [15][16][17]32 and team sport studies 8,32 .…”

The effects of creatine supplementation: A review with special regards to ballgames

“…The majority of the authors recorded performance enhancements in various intermittent sprint tests (1,28,58,60,88,95). Others, however, did not find any evidence for short-term effects on sprint performance (94,101), vertical jump performance (83), or stroke performance and sprint power in tennis (121). The body mass increased significantly in all studies during the 5-7-day loading phase (0.6-1.9 kg).…”

“…As supplements, the testers primarily applied various compounds mixed out of creatinmonohydrate and carbohydrates. The duration of supplementation in the studies mentioned turned out to be very heterogeneous and was confined to a loading phase of 3 to 7 days in half the studies (28,29,58,83,87,91,94,95,101). During this loading phase, the dosage varied between 15 and 25 g creatine monohydrate per day.…”

“…With regards to the test substance and measurement details, the studies display a relatively heterogeneous picture. Some restrict themselves to only measuring basic dimensions such as strength (squat and bench press), jumping force, body composition (body mass, skinfold thickness, intracellular water), cycle power, blood lactate, and other blood chemistry measurements (e.g., 65), whose relation to the specific workload profile of the sport games can be described only as limited (13,29,83,110). Others to some extent include semi-specific tests, such as intermittent short sprint running over distances of 15 to 60 m, with 6 to 30 repetitions and 25-60s rest periods (1,40,58,60,65,69,88,94,101).…”