The aim of this study was to determine the effect of two arm swing techniques, the simultaneous arm swing and the early arm swing, on vertical countermovement jump performance and on the contribution of the arms to vertical movement at the centre of mass (CM) during the propulsion phase. Participants were 28 athletes practicing sports in which the vertical jump constitutes a basic ability. Ground reaction forces were recorded by a force platform and the sagittal plane motion was recorded by a video camera. Although at take-off the vertical velocity (2.7 +/- 0.2m/s for simultaneous technique vs. 2.8 +/- 0.2m/s for early technique; p = 0.040) and position (1.18 +/- 0.06m for simultaneous vs. 1.17 +/- 0.05m for early; p = 0.033) of the CM were significantly different, no difference was observed in jump height (1.56 +/- 0.01m in both techniques). The arm action differed during the initial and final propulsion phases in both styles but the accumulated vertical contribution was similar. The practical implication in sports is that the use of the arm-swing technique to reach the maximum jump height should be determined by tactical demands instead of the technical execution of the arms.
Abstracts / Rev Andal Med Deporte. 2015;8(1):20-47 27 and centre. These associations were attenuated after adjustment for energy intake and disappeared when CRF was considered. Adolescents with high CRF had lower fatness, a healthier profile in most CMR factors and cardio-metabolic scores independently of their MDS (all P≤0.044). Results persisted after further adjusting for energy intake and PA (except for systolic blood pressure, total cholesterol and triglycerides).Conclusion. Adherence to the Mediterranean diet alone is an insufficient fundament for lower adiposity and better cardiometabolic health in adolescents. A combination of a Mediterranean diet with an active lifestyle and high cardiorespiratory fitness seems to be most effective with an active. http://dx.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.