Basketball Players

The purpose of this study was to investigate the relationship between isokinetic knee strength, anaerobic performance, sprinting ability, agility and vertical jump performance in first division basketball player;. Twelve male first division basketball players participated in this study. The mean age was 25.1 +/- 1.7 yrs; mean body height 194.8 +/- 5.7 cm; mean body mass 92.3 +/- 9.8 kg; mean PBF 10.1 +/- 5.1; and mean VO2max 50.55 +/- 6.7 ml/kg/min. Knee extension and flexion strengths were measured at 60 degrees and 180 degrees/s, anaerobic performance was evaluated using the Wingate anaerobic power test, sprint ability was determined by single sprint performance (10-30 m), jump performance was evaluated by countermovement (CMJ) and squat jump (SJ) tests and agility performance was measured using the T drill agility test. Extension strength was significantly correlated with peak power at all contraction velocities. However, for mean power, significant correlation was only found between the 600 left and 180 right knee extension strength measurements. No measure of strength was significantly related to the measurements from/results of field tests. Moreover, strong relations were found between the performance of athletes in different field tests (p<0.05). A limitation of the current study is the use of correlation analysis. Correlations do not prove causation, rather that two variables are related in some way. Within these limitations, the current results highlight the need for a comprehensive battery of field tests to evaluate performance in basketball players

Basketball Players

The purpose of this study was to investigate the relationship between isokinetic knee strength, anaerobic performance, sprinting ability, agility and vertical jump performance in first division basketball player;. Twelve male first division basketball players participated in this study. The mean age was 25.1 +/- 1.7 yrs; mean body height 194.8 +/- 5.7 cm; mean body mass 92.3 +/- 9.8 kg; mean PBF 10.1 +/- 5.1; and mean VO2max 50.55 +/- 6.7 ml/kg/min. Knee extension and flexion strengths were measured at 60 degrees and 180 degrees/s, anaerobic performance was evaluated using the Wingate anaerobic power test, sprint ability was determined by single sprint performance (10-30 m), jump performance was evaluated by countermovement (CMJ) and squat jump (SJ) tests and agility performance was measured using the T drill agility test. Extension strength was significantly correlated with peak power at all contraction velocities. However, for mean power, significant correlation was only found between the 600 left and 180 right knee extension strength measurements. No measure of strength was significantly related to the measurements from/results of field tests. Moreover, strong relations were found between the performance of athletes in different field tests (p<0.05). A limitation of the current study is the use of correlation analysis. Correlations do not prove causation, rather that two variables are related in some way. Within these limitations, the current results highlight the need for a comprehensive battery of field tests to evaluate performance in basketball players

A RARE ANOMALY: IDIOPATHIC PULMONARY ARTERY ANEURISM

WOS: 00034453130026

Small Sided Games in Young Soccer Players

The purpose of this study was to compare the percentage of maximum heart rate (%HRmax), blood lactate (La-), and rating of perceived exertion (RPE, CR-10) responses across different formats of small-sided games (SSG) in elite young soccer players. Fourteen players (average age 16.7 +/- 0.6 years; height 177.6 +/- 4.1 cm; body mass 66.3 +/- 4.7 kg; average training age 6.7 +/- 1.6 years; percentage of body fat 8.4 +/- 2.6%) volunteered to perform the YoYo intermittent recovery test (level 1) and eight bouts of soccer drills including 2-a-side, 3-a-side, and 4-a-side games without goalkeepers in random order at two-day intervals. Heart rates were monitored throughout the SSGs, whereas the RPE and venous blood lactate were determined at the end of the last bout of each SSG. The differences in La-, %HRmax, and RPE either across the different SSGs or between the bouts were identified using 3 x 8 (games x exercise bouts) two-way analysis of variance with repeated measures. Significant differences were found in terms of La-, RPE, and %HRmax among the different types of SSG (p 0.05). 3-a-side and 4-a-side games elicited significantly higher responses than 2-a-side games in terms of %HRmax (p 0.05), whereas 4-a-side games resulted in significantly lower La- and RPE responses compared to 2-a-side and 3-a-side games. The results of this study show that physiological responses differ according to the numbers of players involved in small-sided games. Therefore, it can be concluded that 3-a-side and 4-a-side games could be more effective in improving high intensity aerobic performance than 2-a-side games, which in turn are more appropriate for developing anaerobic performance

in taekwondo practitioners

BACKGROUND: The purpose of this study was to compare the acute effects of different stretching types on sprint performance in taekwondo practitioners

Evaluation of Aerobic Capacity In Soccer Players: Comparison of Field and Laboratory Tests

The purpose of this study was to evaluate the maximal oxygen uptake ( .VO 2max) values in soccer players as assessed by field and laboratory tests. Fourteen amateur soccer players (mean age: 21.9 ± 2.5) performed 2 maximal field tests: the Yo-Yo intermittent recovery test level 1 (YIRT), and the 20-m multi-stage shuttle run test (MST), as well as 1 maximal test on the treadmill with the Bruce treadmill test (BTRT) protocol. A portable telemetric ergospirometry device was used during all the tests to determine .VO 2max. In addition, an estimated .VO 2max value was calculated for players after all the tests. At the end of the study, no significant differences were found between field and laboratory tests in terms of measured .VO 2max, HRmax and respiratory exchange ratio (RER) (p&gt;0.05), whereas significant differences were found between field and laboratory tests in terms of estimated .VO 2max (p&lt;0.05). In addition, there were no significant differences between measured .VO 2 and estimated .VO 2max in BTRT, whereas significant differences were found between measured .VO 2max and estimated .VO 2max in both YIRT and MST. Finally, while there was a strong relationship between .VO 2max and both MST and BTRT performance (distance covered), there was a moderate correlation between .VO 2max and YIRT performance. This study results suggest that it is necessary to use ergospirometry to accurately estimate aerobic capacity in soccer players. In addition, both MST and YIRT could be used to determine HRmax of players, and MST has a strong relationship with .VO 2max. Thus MST may also be a more favourable field-based assessment of soccer players' endurance performance.Scopu

EVIDENCE OF THE RELATIVE AGE EFFECT IN YOUTH SOCCER PLAYERS FROM TURKEY

The main purpose of this study was to ascertain whether the relative age effect (RAE) exists in development teams of soccer clubs across different professional leagues in Turkey. The players were allocated to one of six age subgroups (U14, U15, U16, U17, U19, U21) and league level was also considered as a factor; data on 8600 players in 408 professional teams were analyzed. Birth data and registration dates were collected by accessing the Turkish Football Federation's official website. The results showed that the RAE is strong and significant for each lower league and per age category (p0.05). An independent samples t-test on U21 soccer players' TE means also yielded no significant difference (p>0.05). In conclusion, amongst soccer players in development teams of professional clubs in Turkey, players born in the later months of the year are less likely to be selected than those born in the earlier months. It is also concluded that there is no association between TE and a player's league level

comparative study

OBJECTIVE: To compare the order effect of a combination of plyometric and resistance training sessions on isokinetic leg strength and vertical jump performance in undergraduate students over the course of a 6-week training program