The purpose of this study is to establish the efficient defensive strategy from analyzing the goalkeeper’s gaze behavior and defensive motion in both field hokey penalty corner and penalty stroke. To achieve this goal, 3 national team goalkeepers’ gaze behavior and defensive motions were analyzed, as well as the player’s visual strategies from their interview contents. For the apparatus, multi-channel integrational system were used for analyzing goalkeeper’s reaction movement and personal visual strategies. The result is as follow: First of all, In the penalty stroke, goalkeepers were tended to focus on the bottom of the shooter’s hokey stick. Second, national hokey players had quicker anticipating saccadic movement. For this reason, their visual fixation locations were arrived in targets earlier than the hockey ball. Lastly, in the interview contents, they were reported to focus just on the ball from not disturbed by other various objects(body, hockey stick). However, they actually observed various body parts of shooters. These results imply that we need to develop an effective perceptual skill training in order to anticipate the shooting performance more accurately and rapidly. These types of perceptual and cognitive skill training should be conducted with information on knowing their specific visual cues in anticipating shooting direction.
PURPOSE Using GPS data from actual field hockey matches, this study examined the effects of position and substitution time on the physical performance of elite female players. METHODS From 25 matches played in 2023, data involving 26 players were collected. Players’ positions were classified as forwards (FW), midfielders (MF), and defenders (DF). Substitution times were segmented into 5, 10, and 15 minutes, respectively. A two-way ANOVA was employed to analyze movement patterns across different exercise intensities as influenced by player position and substitution time, followed by Bonferroni post-hoc tests for further detailed analysis. RESULTS Analysis revealed that both position and substitution time significantly affected exercise intensity. Notably, at a substitution time of 5 minutes, substantial differences were observed in high-intensity movements, including the distance covered at high-intensity and the frequency of high-intensity efforts. Furthermore, the substitution time’s impact was particularly pronounced among forwards and midfielders. CONCLUSIONS Findings suggest that shorter substitution times can enhance players’ active movement, thereby supporting maintenance of tactical adjustments and positively influencing overall performance. Implementing shorter substitution times could be particularly beneficial for optimizing team performance, especially for players in forward positions.
PURPOSE This study aimed to examine the effect of acute tart cherry juice intake on recovery after intermittent exercise in female field hockey athletes. METHODS Sixteen university female field hockey athletes were studied for a total of 3 days. The cohort was divided into 2 groups, placebo group (n=8, PLA) and the tart cherry juice group (n=8, TCJ), Each supplement was consumed 5 times over 48 hours. On the first day of the study, venous blood was collected before the test, and physical fitness variables (20m sprint, 5-0-5 agility, and Countermovement jump) were performed twice before and after the Yo-Yo Intermediate recovery test 1 to determine the degree of muscle damage and recovery of physical fitness factors. After all tests on Day 1, supplements (PLA, TCJ) were taken. After 24 hours, venous blood collection was performed, and after 48 hours, venous blood collection and physical element variables were measured to verify the effectiveness of tart cherry juice. RESULTS In the TCJ group, a significant effect was found over time in the 5-0-5 ability among the fitness variable items (p<.001) In Countermovement jump (CMJ), there was a significant effect over group and time (p<.001). Second, significant effects over group and time were shown in Interlukin-6 (IL-6) among variable items related to muscle damage and inflammation through venous blood collection (p<.05) and LDH (p<.001), and CK (p<.01) showed a tendency to decrease with time. CONCLUSIONS The results of this study suggest that acute tart cherry juice intake after intermittent exercise tends to reduce muscle damage and inflammation-related variables in female field hockey players, which could help them recover quickly, especially after hectic game schedules.
The purpose of this study was performance improvement through analysis of movement in elite field hockey players regarding positions using real-time GPS monitoring for compared training game and 2014 Incheon Asian Games. Fifteen elite women field hockey players (Defender: 4, Mid-fielder: 6, and Forward: 5) participated in this study. There were 2014 Incheon Asian Games Korean national team. Real-time GPS system analysis was completed during 10 training game appearances 5 2014 Incheon Asian Games appearances. The results of this study showed that in training game mid-fielder>forward>defender for 3, 4, 5, and 6 zone at speed zone by moving distance, in 2014 Incheon Asian Games forward>mid-fielder>defender for 6 zone at speed zone by moving distance. And moving distance by quarter increased all position in 2014 Incheon Asian Game more than training game. Therefore, These data might be useful to analysis of movement in field hockey players. Moreover improved performance and individual exercise ability by feedback for players distance, heart rate, and exercise trajectory. Thus, Gold-medal won at the 2014 Incheon Asian Games in field hockey.
The purpose of this study was to analysis of moving distance during games, time and heart rate for hockey games using GPS (global positioning systems) by positions in Korea national female athletes. The subjects were Korea national female hockey players (n=13) including 4 forwards, 4 midfields, and 5 fullbacks that participated in five Korea vs. Japan international games. All subjects were wearing GPS throughout the games. The results were as follows: Firstly, the average total travel distance per game was approximately 5.7km and higher in the second half. Physical movement in the games was not different from positions where 70% of physical movement was performed at low intensity and 30% at moderate and/or vigorous intensity, suggesting that the subjects; physical movement was performed at the appropriate level of exercise intensity. Secondly, during the game, the subjects performed physical movement faster than 11km/h for 22 minutes, indicating that the subjects could maintain their physical movement at a relatively faster speed throughout the games. In particular, midfields showed a greater amount of physical movement at moderate speed. Thirdly, the average exercise heart rate was 145bpm, which was equivalent to 60% of HRmax. The subjects maintained their average exercise heart rate greater than 150bpm (above 60% of HRmax) for 40 minutes during the games, indicating that the players had an ability to maintain physical movement at high intensity throughout the games. In conclusion, in spite of the fact that Korea national female hockey players have an ability to maintain physical movement at a relatively faster speed and higher intensity, their physical movement and performance are often affected. Therefore, it is necessary to develop and apply the specific interval training program for national female hockey players that can facilitate the faster recovery from the repetitive physical movement requiring power and speed at high intensity.
