Loading...
Please wait, while we are loading the content...
Similar Documents
Universidade Federal De Santa Catarina Centro De Desportos Programa De Pós-graduação Em Educação Física
| Content Provider | Semantic Scholar |
|---|---|
| Author | Santos, Luciene Neves |
| Copyright Year | 2008 |
| Abstract | The aim of the present study, with pre-experimental design, was to analyze the effects of two high-intensity interval training models (HIT) applied during five weeks in game performance, physiological and neuromuscular indices in female futsal elite athletes. Took part of the study 16 professional players from U-20 and U-17 categories (age = 19 ± 2 years, height = 161.5 ± 4.6 cm; body mass = 58.7 ± 7.9 kg). The HIT7,5x7,5 model (n = 7), consisted of four series of four minutes of effort and three minutes of passive recovery, characterizing an exercise rest ratio of 1: 1 (7.5 x 7.5 seconds). On the other hand, the HIT15x15 (n = 9) consisted of four series of four minutes of effort with three minutes of passive recovery between them and have an exercise rest ratio of 1: 1 (15 x 15 sec). The distances (3.75 seconds of time between each beep) of the both training model were individualized by the peak velocity obtained in Futsal Intermittent Endurance Test (PVFIET). Preand post-tests were composed of lab and field evaluations and performance in a simulated game that was performed by the kinematic analysis of movements by computer tracking system. The laboratory assessments were performed as follows: 1) anthropometric measurements; 2) submaximal protocol in a treadmill to determine the running economy (RE); 3) incremental test on a treadmill to determine the maximal oxygen consumption (VO2max), the speed at VO2max (vVO2max), peak velocity on treadmill (PVTRE) and the speed corresponding to the second physiological transition threshold (vLTF2); 4) tests on the force platform for the determination of vertical jumps: squat jump (SJ) and counter movement jump (CMJ); 5) maximum tests at the isokinetic dynamometer to determine the concentric and eccentric maximum torque of the extensor and flexor muscles of the knee (PT). The field evaluations were performed as follows: 1) Futsal Intermittent Endurance Test to determine the peak velocity (PVFIET); 2) Maximal shuttle run test (40-m MST) to determine the best time (BT), average time (AT) and fatigue index (FI). The ANOVA mixed model analysis of variance (group x time) was used to analyze differences between groups (HIT7,5x7,5 vs. HIT15x15) and between the pre and post intervention, as well as the interaction between these factors. The post-hoc Bonferroni test was applied when necessary. Statistical significance was set at p<0.05 for all analyses. In addition, the Effect Size (ES) was used to analyze the magnitude of the differences induced by the training programs. In relation to the game performance, the time spent in form of sprint, was higher for HIT15x15 group (ES = large) that for HIT7,5x7,5 (ES = small). Regarding aerobic power values, only PVFIET and PVTRE results showed significant increases over time (F = 24.735; P ≤ 0.001 and F = 24.945, P ≤ 0.001, respectively) for both groups. The vLTF2 was the only aerobic capacity index that presented significant difference (F = 90.363, P ≤ 0.001) with respect to time for both HIT models, and the RE presented practical improvements only for HIT15x15 group (ES = 0.68; moderate). Concerning the anaerobic performance, the AT significantly reduced (F = 6.815, p = 0.002) only for HIT15x15 group. The muscle power indexes of the lower limbs (CMJ and SJ) showed a significant increase (F = 19.387, p ≤ 0.001 and F = 11.499, p = 0.004, respectively) with respect to time for the two HIT models. Regarding torque variables of the knee extensor muscles, the o PTECC-EXT showed significant increase (F = 5.962, p = 0.028) with respect to time (pre vs. post) only for HIT15x15 group. Based on the results of the present study, it can be concluded that a short period of HIT can induce improvements in capacity and aerobic and anaerobic power, muscle power of lower limbs and in the maximum force eccentric and concentric values of the knee extensor muscles in female futsal players. However, it is emphasized that the HIT15x15 model was more efficient to induce practical changes over the neuromuscular (CMJ, PTCON-EXT, PTECC-EXT, PTCON-FLE), and anaerobic (MT) variables, which may have reflected in the improvement of the RE, PV, and mainly in high intensity (15.5 18.4 km h-1) performance recorded during the simulated futsal game. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.pmf.sc.gov.br/arquivos/arquivos/pdf/20_10_2014_19.59.40.421870ae25208d125033bef646c247f5.pdf |
| Alternate Webpage(s) | https://repositorio.ufsc.br/bitstream/handle/123456789/92192/274179.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://repositorio.ufsc.br/bitstream/handle/123456789/93226/264412.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://repositorio.ufsc.br/bitstream/handle/123456789/92733/266103.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | https://core.ac.uk/download/pdf/30405046.pdf |
| Alternate Webpage(s) | https://repositorio.ufsc.br/xmlui/bitstream/handle/123456789/99337/305531.pdf?isAllowed=y&sequence=1 |
| Alternate Webpage(s) | http://cev.org.br/arquivo/biblioteca/4016726.pdf |
| Alternate Webpage(s) | https://repositorio.ufsc.br/bitstream/handle/123456789/132482/333186.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
