Research Article
Offensive Patterns Analysis of Thai Nation Team in Volleyball Women’s Nations League 2022
Issue:
Volume 12, Issue 2, June 2024
Pages:
12-19
Received:
28 March 2024
Accepted:
11 April 2024
Published:
29 April 2024
Abstract: Effective offensive patterns are crucial for volleyball athletes, enabling quick and forceful attacks to strategically place the ball and impact the game. This study aimed to analyze the offensive strategies and outcomes of the Thai national team during the 2022 Women's Volleyball Nations League (VNL), comparing them with the opposing teams. Using a specific match model from the 13 matches and 51 sets held between May 31 and July 14, 2022, a total of 3,151 attack results were examined. Results were reported through means, standard deviations, percentages, and independent sample t-test statistical analysis for inter-group differences. The findings revealed that the Thai team predominantly utilized the curve ball spike (C) as the most aggressive offensive pattern (10.31±3.43), constituting 37.44% per match. The team's offensive performance showed a high score for successful attacks (ACE) at 35.08±10.75, equivalent to 28.79% per match. Comparative analysis indicated statistically significant differences in three offensive patterns at a 0.05 significance level. Notably, the Thai team excelled in the 3-meter ball spike (3M) at 24.38±8.00 (20.01% per match), fast spike (A) at 10.31±3.43 (8.46% per match), and dummy (X) at 6.23±3.81 (5.11% per match). However, there was no statistical difference in attack outcomes between the Thai team and the opponents. The Thai team's preference for the curve ball spike (C) constituted 37.44% per match, with a corresponding 28.79% success rate in attack scores (ACE). Notably, the 3M, A, and X offensive patterns exhibited significant differences between the Thai team and their opponents, while attack results showed no statistical variance.
Abstract: Effective offensive patterns are crucial for volleyball athletes, enabling quick and forceful attacks to strategically place the ball and impact the game. This study aimed to analyze the offensive strategies and outcomes of the Thai national team during the 2022 Women's Volleyball Nations League (VNL), comparing them with the opposing teams. Using ...
Show More
Research Article
Metabolic Equivalent Distance Across Game Quarters and Athlete Position in Female Collegiate Lacrosse Players
Brock Symons*
,
Jennifer Bunn
Issue:
Volume 12, Issue 2, June 2024
Pages:
20-27
Received:
22 March 2024
Accepted:
7 April 2024
Published:
29 April 2024
Abstract: As a sport, field lacrosse requires seamless transitions between acceleration and deceleration. Unfortunately, linear displacement variables at a constant speed underestimate the energy demand in team sports, as they fail to account for the additional energy expended during acceleration and deceleration. In order to address these additional energy costs and offer a more precise measure of an athlete's workload, the metric called metabolic equivalent distance (MED) was developed. The purpose of the study was to assess the differences in MED across game quarters and athlete positions among female collegiate lacrosse players and determine potential relationships between MED and other workload variables. Seventeen female collegiate lacrosse players wore global positioning systems units, and data were collected over the course of 17 games. Performance variables were analyzed per minute played (min PT) and included: MED (m), total distance (m), accelerations (count), decelerations (count), total sprints (count), metabolic peak power (J), metabolic energy cost (J/kg/m), and equivalent distance index (%). No difference was found between athlete position. Performance variables did not differ between game quarters, except for playing time (p < .001). Athlete playing time was reduced in the 3rd and 4th quarters compared to quarter 1 (p < .001). MED showed a perfect correlation with total distance and metabolic energy cost (r = 1; p < .001) and a near-perfect correlation with accelerations and total sprints (r = .93; p < .001). Decelerations exhibited a strong correlation with MED (r = .86; p < .001). MED was moderately correlated with metabolic peak power (r = .34; p < .001); whereas equivalent distance index displayed a small correlation (r = .15; p = .02). Athletes exhibited a consistent output in metabolic workload variables across position and game per minute of play. MED could serve as a surrogate workload variable to better understand the athlete’s energy expenditure during high-intensity training and game play.
Abstract: As a sport, field lacrosse requires seamless transitions between acceleration and deceleration. Unfortunately, linear displacement variables at a constant speed underestimate the energy demand in team sports, as they fail to account for the additional energy expended during acceleration and deceleration. In order to address these additional energy ...
Show More
