THE EFFECTS OF SINGLE VERSUS REPEATED PLYOMETRICS ON LANDING BIOMECHANICS AND JUMPING PERFORMANCE IN MEN
Journal Title: Biology of Sport - Year 2014, Vol 31, Issue 1
Abstract
The aim of this study was to examine the chronic effects of single and repeated jumps training on vertical landing force (VGRF) and jump height in untrained men. The VGRF and jump height were compared after a six-week plyometric training programme containing single and repeated jumps, together with two additional parameters: landing time (LT) and range of the knee flexion during landing (KF). Thirty-six untrained physical education students with a plyometric training background were randomly assigned to a single jump group (SJG, n =12), repeated jumps group (RJG, n =12), and control group (CON, n =12). The SJG performed only single jumps, the RJG executed repeated (consecutive) jumps, whereas the CON did not perform any exercises at all. A countermovement jump (CMJ), repeated countermovement jumps (RCMJ), and a drop jump (DJ) were tested before and after the training. Only the RJG showed a significantly reduced VGRF (p<0.05) in all tests. Both plyometric groups significantly improved (p<0.05) their jump height in all tests. The LT was significantly greater in the RJG, compared to the SJG, in all tests. The KF was also significantly (p<0.05) greater in the RJG than in the SJG for CMJ and RCMJ. The results suggest that repeated jumps are beneficial for simultaneous landing force reduction and jumping performance enhancement.
Authors and Affiliations
Hubert Makaruk, Adam Czaplicki, Tomasz Sacewicz, Jerzy Sadowski
Keywords
Related Articles
- EP ID EP59183
- DOI -
- Views 88
- Downloads 0
EXAMINING HOW WHEELCHAIR BASKETBALL PLAYERS’ SELF-ESTEEM AND MOTIVATION LEVELS IMPACT ON THEIR STATE AND TRAIT ANXIETY LEVELS
The purpose of the study was to examine how wheelchair basketball players’ self-esteem and motivation levels impact on their state and trait anxiety levels. The Coopersmith Self-Esteem Inventory, Sport Motivation Scale a...
EXERCISE MYOPATHY: CHANGES IN MYOFIBRILS OF FAST-TWITCH MUSCLE FIBRES
The purpose of the present study was to determine the relationships between the changes of myofibrils in fast-twitch oxidative-glycolytic (type IIA) fibres and fast-twitch glycolytic (type IIB) muscle fibres, protein syn...
Kinetic analysis of the human knee joint
The pathology of the calcaneal (Achilles) tendon constitutes a serious therapeutical and social problem. Indeed, this tendon is the strongest plantar flexor of the foot that plays an important role in the humangait. Alth...
Conformity with the pattern of maleness and cognitive-motivational determinants of aspirations for success in women
The aim of the present study was to estimate differences in the cognitive-motivational parameters of women presenting with dissimilar cultural patters of “mascuality” which are associated with psychophysical costs of the...
DELAYED URIC ACID ACCUMULATION IN PLASMA PROVIDES ADDITIONAL ANTIOXIDANT PROTECTION AGAINST IRON-TRIGGERED OXIDATIVE STRESS AFTER A WINGATE TEST
Reactive oxygen species are produced during anaerobic exercise mostly by Fe ions released into plasma and endothelial/muscle xanthine oxidase activation that generates uric acid (UA) as the endpoint metabolite. Paradoxic...