Changes In Game Performance Of NCAA Division I Women Soccer Players Across A Competitive Season

2015 ◽  
Vol 47 ◽  
pp. 967
Author(s):  
Adam J. Wells ◽  
Jay R. Hoffman ◽  
Kyle S. Beyer ◽  
Mattan W. Hoffman ◽  
David H. Fukuda ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
Division I ◽  
Soccer Players ◽  
Competitive Season ◽  
Game Performance

Reduced High-Intensity-Running Rate in College Women’s Soccer When Games Are Separated by 42 Hours

2015 ◽  
Vol 10 (4) ◽  
pp. 436-439 ◽  
Author(s):  
William P. McCormack ◽  
Jay R. Hoffman ◽  
Gabriel J. Pruna ◽  
Tyler C. Scanlon ◽  
Jonathan D. Bohner ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Ncaa Division I ◽  
High Intensity ◽  
Recovery Period ◽  
Division I ◽  
Soccer Players ◽  
Glycogen Depletion ◽  
Total Distance ◽  
Competitive Season ◽  
Gps Devices

Purpose:During the competitive soccer season, women’s intercollegiate matches are typically played on Friday evenings and Sunday afternoons. The efficacy of a 42-h recovery period is not well understood. This investigation was conducted to determine performance differences between Friday and Sunday matches during a competitive season.Methods:Ten NCAA Division I female soccer players (20.5 ± 1.0 y, 166.6 ± 5.1 cm, 61.1 ± 5.8 kg) were monitored with 10-Hz GPS devices across 8 weekends with matches played on Friday evenings and Sunday afternoons. The players were outside backs, midfielders, and forwards. All players had to participate in a minimum of 45 min/match to be included in the study. Average minutes played, total distance covered, total distance of high-intensity running (HIR) (defined as running at a velocity equal to or exceeding 3.61 m/s for longer than 1 s), the number of HIR efforts, and the number of sprints were calculated for each match. Data for Friday vs Sunday matches were averaged and then compared using dependent t tests.Results:No differences were seen in minutes played, distance rate, or number of sprints between Friday and Sunday matches. A significant (P = .017) decrease in rate of HIR between Friday (25.37 ± 7.22 m/min) and Sunday matches (22.90 ± 5.70 m/min) was seen. In addition, there was a trend toward a difference (P = .073) in the number of efforts of HIR between Friday (138.41 ± 36.43) and Sunday (126.92 ± 31.31).Conclusions:NCAA Division I female soccer players cover less distance of HIR in games played less than 48 h after another game. This could be due to various factors such as dehydration, glycogen depletion, or muscle damage.

LAX-Score

2021 ◽  
Vol 5 (3) ◽  
pp. 1-28
Author(s):  
Woosub Jung ◽  
Amanda Watson ◽  
Scott Kuehn ◽  
Erik Korem ◽  
Ken Koltermann ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
Athletic Performance ◽  
High Performance ◽  
Performance Enhancement ◽  
Ground Truth ◽  
Division I ◽  
Sports Science ◽  
Player Performance ◽  
The Relationship ◽  
Game Performance

For the past several decades, machine learning has played an important role in sports science with regard to player performance and result prediction. However, it is still challenging to quantify team-level game performance because there is no strong ground truth. Thus, a team cannot receive feedback in a standardized way. The aim of this study was twofold. First, we designed a metric called LAX-Score to quantify a collegiate lacrosse team's athletic performance. Next, we explored the relationship between our proposed metric and practice sensing features for performance enhancement. To derive the metric, we utilized feature selection and weighted regression. Then, the proposed metric was statistically validated on over 700 games from the last three seasons of NCAA Division I women's lacrosse. We also explored our biometric sensing dataset obtained from a collegiate team's athletes over the course of a season. We then identified the practice features that are most correlated with high-performance games. Our results indicate that LAX-Score provides insight into athletic performance beyond wins and losses. Moreover, though COVID-19 has stalled implementation, the collegiate team studied applied our feature outcomes to their practices, and the initial results look promising with regard to better performance.

scholarly journals Biomarker Response to a Competitive Season in Division I Female Soccer Players

2019 ◽  
Vol 33 (10) ◽  
pp. 2622-2628 ◽  
Author(s):  
Alan J. Walker ◽  
Bridget A. McFadden ◽  
David J. Sanders ◽  
Meaghan M. Rabideau ◽  
Morgan L. Hofacker ◽  
...  
Keyword(s):  
Division I ◽  
Soccer Players ◽  
Competitive Season ◽  
Biomarker Response

Fitness Characteristics of NCAA Division I Ice Hockey Players and Their Relation to Game Performance

2010 ◽  
Vol 42 ◽  
pp. 158
Author(s):  
Karissa Peyer ◽  
James M. Pivarnik ◽  
Joey C. Eisenmann ◽  
Mike Vorkapich
Keyword(s):  
Ncaa Division I ◽  
Ice Hockey ◽  
Division I ◽  
Hockey Players ◽  
Game Performance

Regular- and postseason comparisons of playing time and measures of running performance in NCAA Division I women soccer players

2015 ◽  
Vol 40 (9) ◽  
pp. 907-917 ◽  
Author(s):  
Adam J. Wells ◽  
Jay R. Hoffman ◽  
Kyle S. Beyer ◽  
Mattan W. Hoffman ◽  
Adam R. Jajtner ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
High Intensity ◽  
High Speed ◽  
Division I ◽  
Soccer Players ◽  
Running Performance ◽  
Transient Motion ◽  
Absolute Time ◽  
Low Intensity ◽  
Playing Time

The management of playing time in National Collegiate Athletic Association (NCAA) soccer athletes may be a key factor affecting running performance during competition. This study compared playing time and running performance between regular-season and postseason competitions during a competitive women’s soccer season. Nine NCAA Division I women soccer players (age, 21.3 ± 0.9 years; height, 170.3 ± 5.7 cm; body mass, 64.0 ± 5.8 kg) were tracked using portable GPS devices across 21 games during a competitive season (regular season (n = 17); postseason (n = 4)). Movements on the field were divided into operationally distinct thresholds defined as standing/transient motion, walking, jogging, low-speed running, moderate-speed running, high-speed running, sprinting, low-intensity running, and high-intensity running. A significant increase in minutes played (+17%, p = 0.010) was observed at postseason compared with the regular season. Concomitant increases in time spent engaged in low-intensity running (LIR: +18%, p = 0.011), standing/transient motion (+35%, p = 0.004), walking (+17%, p = 0.022), distance covered while walking (+14%, p = 0.036), and at low intensity (+11%, p = 0.048) were observed. Performance comparisons between the first and second half within games revealed a significant decrease (p ≤ 0.05) in high-speed and high-intensity runs during the second half of the postseason compared with the regular season. Changes in minutes played correlated significantly with changes in absolute time spent engaged in LIR (r = 0.999, p < 0.001), standing/transient motion (r = 0.791, p = 0.011), walking (r = 0.975, p = 0.001), jogging (r = 0.733, p = 0.025), distance covered while walking (r = 0.898, p < 0.001) and low-intensity activity (r = 0.945, p < 0.001). Negative correlations were observed between minutes played and absolute time sprinting (r = −0.698, p = 0.037) and distance covered sprinting (r = −0.689, p = 0.040). Results indicate that additional minutes played during the postseason were primarily performed at lower intensity thresholds, suggesting running performance during postseason competitions may be compromised with greater playing time in intercollegiate women’s soccer.

scholarly journals Contextual Variation in External and Internal Workloads across the Competitive Season of a Collegiate Women’s Soccer Team

Sports ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 165
Author(s):  
Lauren E. Rentz ◽  
William Guy Hornsby ◽  
Wesley J. Gawel ◽  
Bobby G. Rawls ◽  
Jad Ramadan ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
Division I ◽  
Positioning Systems ◽  
Contextual Variation ◽  
Competitive Season ◽  
Team Success ◽  
Final Score ◽  
Soccer Team ◽  
Game Context ◽  
Women's Soccer

As sports technology has continued to develop, monitoring athlete workloads, performance, and recovery has demonstrated boundless benefits for athlete and team success. Specifically, technologies such as global positioning systems (GPS) and heart rate (HR) monitors have granted the opportunity to delve deeper into performance contributors, and how variations may exist based upon context. A team of NCAA Division I women’s soccer athletes were monitored during games throughout one competitive season. Individual athlete, positional groups, and team external and internal workloads were explored for differences based upon game location, opponent ranking, game result, and the final score differential. Game location and opponent ranking were found to have no effect on team-wide absolute or relative external workloads, whereas game result and score differential did. Internal workloads across the team tended to only vary by game half, independent of game context; however, the HR of defenders was determined to be higher during losses as compared to wins (p = 0.0256). Notably, the games that resulted in losses also represented the games with the fewest number of substitutions. These findings suggest high value in monitoring performance and workloads that are characteristic of varying, often multifaceted, contexts. It is hoped that this information can lead to more informed approaches to vital game-time and coaching decisions.

scholarly journals Body Composition and Power Output In NCAA Division I American Football Linebackers Throughout a Competitive Season

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Kurt McDowell
Keyword(s):  
Body Composition ◽  
Ncaa Division I ◽  
Athletic Performance ◽  
Past Research ◽  
American Football ◽  
Division I ◽  
Competitive Season ◽  
Optimal Programming ◽  
Division I Football ◽  
Squat Jumps

Body composition and power are impactful variables of athletic performance. However, few studies have assessed power and body composition changes from pre-, to mid-, to end-of-season in American Football linebackers. The purpose of this study was to determine how power and body composition respond to a competitive season in Division I Football Championship Series (FCS) American football linebackers. Participants (n=9; Age=19.7 ± 1.5 years; Weight=101.5±11.6 kg; Height=183.3±5.2 cm; [Body Fat percent (BF %) =21.31 ± 6.02%)] performed a Dual-Energy X-ray Absorptiometry (DXA) scan, and power was assessed via three vertical jumps and squat jumps at 40, 60, 80, and 100 kg at three time points: a) 1 week prior to their regular season, b) 2 days after the bye week in the middle of the season, and c) 1 week prior to the completion of the season. An Analysis of Variance (ANOVA) revealed no significant differences (p ≤ 0.05) in power or body composition. These results support past research, indicating power and body composition can be maintained throughout a competitive season. However, more research is needed to determine the optimal programming methods to maintain or improve athletic performance via optimization of body composition and power during a competitive season.

scholarly journals Effects of NCAA Division I Cross-Country Training on Serum Ferritin, Monocytes, TNF-α and DKK1 (P18-126-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Chandler McDonald ◽  
Noah John Erb ◽  
David Aguilar-Alvarez
Keyword(s):  
Serum Ferritin ◽  
Ncaa Division I ◽  
Complete Blood Count ◽  
Iron Status ◽  
Division I ◽  
Bone Biomarkers ◽  
Mineral Density ◽  
Competitive Season ◽  
Tnf Α ◽  
Cross Country

Abstract Objectives Inflammatory cytokine and immune cell production is modulated by iron status including storage measured by ferritin levels. Cross-country athletes have an elevated risk of iron depletion and stress fractures; the effects of a competitive season on inflammation, iron stores, and bone biomarkers have yet to be elucidated. The purpose of this study is to determine the influence of one season of NCAA Division I (D-I) cross-country competition has on TNF-α, serum ferritin (sFer), complete blood count (CBC), and various bone biomarkers to identify potential relationships. Methods Twelve D-I cross-country athletes, ages 19 to 25 years old, were followed for one year. Blood was collected at the beginning of each season and analyzed for CBC and sFer levels through enzymatic spectrophotometry. TNF-α, OPG, OPN, DKK1, SOST, PTH, FGF23, Insulin, and Leptin were measured through Luminex® MAGPIX® multiplex assays. Paired-samples t-test compared the 2017 preseason and 2018 preseason baselines, while Pearson correlations included both seasons. Statistical analyses were performed using IBM® SPSS Statistics 25 software. Results TNF-α levels increased significantly from 2017 to 2018 (9.5 ± 4.6 vs. 12.2 ± 4.9 pg/mL, P = 0.005) as well as DKK1 (544.4 ± 223.6 vs. 1167.0 ± 212.1 pg/mL, P < 0.001), while % Monocytes decreased significantly from 2017 to 2018 (10.7 ± 2.6 vs. 8.6 ± 1.9%, P = 0.003). sFer showed to have a moderate positive-correlation with TNF-α and OPG (r = 0.619, P = 0.002; r = 0.640, P = 0.001) throughout both preseason intervals. Conclusions Given TNF-α has shown to induce DKK1, both bone mineral density and bone biomarkers of the cross-country athlete needs to be continually assessed throughout multiple stages of their competitive season to insure proper bone health. Further investigation is needed into the potential causes for the increases of TNF-α and DKK1 observed in cross-country athletes. Funding Sources Weber State University's Office of Undergraduate Research Grant. Supporting Tables, Images and/or Graphs

Pre- and Post-season Dietary Intake, Body Composition, and Performance Indices of NCAA Division I Female Soccer Players

2003 ◽  
Vol 13 (3) ◽  
pp. 303-319 ◽  
Author(s):  
Mandy Clark ◽  
Debra B. Reed ◽  
Stephen F. Crouse ◽  
Robert B. Armstrong
Keyword(s):  
Ncaa Division I ◽  
Division I ◽  
Soccer Players ◽  
Published Data ◽  
Performance Indices ◽  
Diet Records ◽  
Physical Tests ◽  
Physiological Profiles ◽  
Glycogen Repletion ◽  
And Performance

Little published data describe the dietary and physiological profiles of intercollegiate female soccer players; therefore, the purpose of this investigation was to report baseline dietary data, anthropometrics, and performance indices of soccer women during rigorous pre-season training (2 sessions/day) and then during the post-competitive season. Members of a NCAA Division I women’s soccer squad completed 3-day diet records, anthropometrics, and physical tests, including VO2peak. Average body mass was 62 kg with 16% body fat, and no significant pre to post differences were observed. Total energy, carbohydrate (CHO), protein, and fat intakes were significantly greater during the pre-sea-son. Pre-season energy intake met the DRI for females with an “active” lifestyle (37 kcal/kg). While CHO intake failed to meet minimum recommendations to promote glycogen repletion (7–10 g/kg), protein and fat intakes were above minimum recommendations. Pre- and post-season intakes of several micronu-trients were marginal (<75% of the DRI) including vitamin E, folate, copper, and magnesium. VO2peak significantly improved from pre- to post-season (42 and 50 ml/kg/min). In this study female soccer players appeared to meet caloric needs during periods of training but failed to meet minimum CHO and micronu-trient recommendations. Foods higher in protein and fat displaced more CHOrich and nutrient-dense foods within athletes’ energy requirements and satiety limits.

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