scholarly journals Estimation of Prepractice Hydration Status of National Collegiate Athletic Association Division I Athletes

2009 ◽  
Vol 44 (6) ◽  
pp. 624-629 ◽  
Author(s):  
Stella L. Volpe ◽  
Kristen A. Poule ◽  
Erica G. Bland
Keyword(s):  
Menstrual Cycle ◽  
Specific Gravity ◽  
Ncaa Division I ◽  
National Collegiate Athletic Association ◽  
Division I ◽  
Urine Specific Gravity ◽  
Cycle Phase ◽  
Hydration Status ◽  
Menstrual Cycle Phase ◽  
Division I Athletes

Abstract Context: To our knowledge, no one has compared the prepractice hydration status of male and female National Collegiate Athletic Association (NCAA) Division I athletes or has studied the effects of the menstrual cycle phase on women's prepractice hydration status. Objective: To report prepractice hydration status of collegiate athletes and determine the factors that might influence that status. Design: Cross-sectional, descriptive study. Setting: University sports team practices. Patients or Other Participants: Participants included 138 male and 125 female athletes (age  =  19.9 ± 1.3 years, height  =  165.8 ± 42.9 cm, mass  =  77.4 ± 17.5 kg) from an NCAA Division I New England university. Intervention(s): One spontaneously voided (spot) urine sample was collected from each participant before his or her team practice and was measured 2 times. Main Outcome Measure(s): A refractometer was used to analyze the amount of light that passed through a small drop of urine and assess urine specific gravity. Fluid intake and menstrual history for women were also collected. Three hydration-status groups were defined based on the American College of Sports Medicine and National Athletic Trainers' Association criteria: (1) euhydrated, which was urine specific gravity less than 1.020; (2) hypohydrated, from 1.020 to 1.029; and (3) significantly hypohydrated, equal to or more than 1.030. Results: Thirteen percent of student-athletes appeared significantly hypohydrated, with a mean urine specific gravity of 1.031 ± 0.002 (χ2  =  12.12, P < .05); 53% appeared hypohydrated, with a mean urine specific gravity of 1.024 ± 0.003 (χ2  =  12.12, P < .05); and 34% appeared euhydrated, with a mean urine specific gravity of 1.012 ± 0.005 (χ2  =  0.03, P > .05). A greater percentage of men (47%) than women (28%) were hypohydrated (χ2  =  8.33, P < .05). In women, no difference was evident between the luteal and follicular phases of their menstrual cycles (χ2  =  0.02, P > .05). Conclusions: Before activity, athletes were hypohydrated at different levels. A greater percentage of men than women were hypohydrated. Menstrual cycle phase did not appear to affect hydration in women.

scholarly journals NCAA Division I American football players with sickle cell trait have altered hematological responses and hydration status

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Haoyan Wang ◽  
Matt Martone ◽  
Michael E. Owens ◽  
Nathan P. Lemoine ◽  
Jack Marucci ◽  
...  
Keyword(s):  
Uric Acid ◽  
Specific Gravity ◽  
Sickle Cell ◽  
Ncaa Division I ◽  
Sickle Cell Trait ◽  
American Football ◽  
Division I ◽  
Urine Specific Gravity ◽  
Hydration Status ◽  
Football Players

AbstractSickle cell trait (SCT) is a risk factor of collapse and sudden death in athletes. We conducted a longitudinal study to determine the hematological responses and hydration status in NCAA Division I American football players with SCT. The study took place over 2 years with 6 SCT and 6 position-matched controls (CON) in year 1; and 4 SCT and 4 CON in year 2. In year 2, three of the four SCT players were recruited and re-enrolled with new position-matched controls (total sample data = 10 SCT and 10 CON). Blood samples were taken at three visits: pre-camp, post-camp, and post-season to examine hemoglobin variants, complete blood counts, and chemistry panel 26. Hydration status was assessed by measuring body weight change, urine specific gravity, and urine and sweat electrolyte concentrations during the pre-season training camp. All SCT players were confirmed to have SCT (HbS = 37.9 ± 2.4%) and had greater red cell distribution width (RDW) compared to CON across all visits. Serum uric acid was higher in SCT (7.3 ± 1.0 mg/dL) compared to CON (6.1 ± 0.6 mg/dL; p = 0.001). Furthermore, serum creatine kinase levels were greater in SCT (1617.0 ± 1034.8 IU/L) at pre-camp compared to CON (1037.4 ± 602.8 IU/L; p = 0.03). SCT players exhibited lower pre- and post-practice urine electrolytes and urine specific gravity (SCT pre: 1.019 ± 0.005 vs. CON pre: 1.026 ± 0.008 p < 0.001; SCT post: 1.020 ± 0.005 vs. CON post: 1.030 ± 0.008 p < 0.01), whereas sweat sodium concentrations were higher in SCT players (55.4 ± 13.6 mmol/L) compared to CON (45.5 ± 10.6 mmol/L; p < 0.001). Given the evidence, greater uric acid and CPK levels in SCT players compared to CON may be an early indicator of altered kidney function and muscle damage, which could be added into NCAA guidelines for surveillance among SCT players. Consistent education and reinforcement of the importance of adequate fluid balance during exercise are critical for both SCT and CON players.

scholarly journals Associations of Early Sport Specialization and High Training Volume With Injury Rates in National Collegiate Athletic Association Division I Athletes

2020 ◽  
Vol 8 (3) ◽  
pp. 232596712090682 ◽  
Author(s):  
Seth Ahlquist ◽  
Brian M. Cash ◽  
Sharon L. Hame
Keyword(s):  
Ncaa Division I ◽  
Sport Participation ◽  
National Collegiate Athletic Association ◽  
Division I ◽  
Multiple Injuries ◽  
Training Volume ◽  
Level Of Evidence ◽  
Cross Sectional ◽  
Time Out ◽  
Division I Athletes

Background: There are 60 million US youth who participate in organized athletics, with large increases in both sport participation and specialization during the past 2 decades. There is some evidence that increased sport specialization and training volumes may be associated with increased injuries in adolescent populations. This study examines these variables in a population of elite college athletes. Hypothesis: Early sport specialization (ESS) and a high training volume are risk factors for injury and/or surgery in National Collegiate Athletic Association (NCAA) Division I athletes. Study Design: Cross-sectional study; Level of evidence, 3. Methods: All Division I athletes at a single institution were surveyed regarding demographics, scholarship status, reason for specialization, age at specialization, training volume, and injury history. Chi-square and Mann-Whitney U tests were performed to identify significant differences. Results: Athletes who specialized in their eventual varsity sport before age 14 years were more likely to report a history of injuries (86.9% vs 71.4%), multiple injuries (64.6% vs 48.8%), multiple college injuries (17.2% vs 6.0%), a greater number of total injuries (2.0 vs 1.0), and require more time out for an injury (15.2 vs 6.5 weeks) than those who did not. They were also more likely to be recruited (92.9% vs 82.1%) and receive a scholarship (82.8% vs 67.9%). Athletes who trained for greater than 28 hours per week in their eventual varsity sport before high school were more likely to report multiple injuries (90.0% vs 56.3%), multiple college injuries (40.0% vs 12.5%), a surgical injury (60.0% vs 22.9%), multiple surgical injuries (30.0% vs 4.7%), a greater number of total injuries (2.5 vs 2.0), and more time out for an injury (36.5 vs 11.0 weeks) than those who did not (all P < .05). However, these athletes were not more likely to be recruited (90.0% vs 89.8%) or receive a scholarship (80.0% vs 74.5%). Conclusion: NCAA Division I athletes with ESS and/or a high training volume sustained more injuries and missed more time because of an injury, but those with ESS were more likely to be recruited and receive a college scholarship. This knowledge can help inform discussions and decision making among athletes, parents, coaches, trainers, and physicians.

Psychological Skills Training in NCAA Division I Athletics: Are Athletes Ready for Change?

2015 ◽  
Vol 9 (4) ◽  
pp. 317-334 ◽  
Author(s):  
William V. Massey ◽  
Stacy L. Gnacinski ◽  
Barbara B. Meyer
Keyword(s):  
Transtheoretical Model ◽  
Ncaa Division I ◽  
National Collegiate Athletic Association ◽  
Readiness To Change ◽  
Skills Training ◽  
Decisional Balance ◽  
Division I ◽  
Psychological Skills ◽  
Psychological Skills Training ◽  
Division I Athletes

Research has demonstrated the efficacy of psychological skills training (PST), yet many athletes do not appear ready to do whatever it takes to improve the mental aspects of performance. Although the transtheoretical model of behavior change (TTM), generally, and readiness to change, specifically, have received considerable attention in a range of allied health fields, few studies have been conducted to examine this construct in applied sport psychology. The purpose of the current study was to examine National Collegiate Athletic Association (NCAA) Division I athletes’ readiness for PST as it relates to their stage of change, decisional balance, self-efficacy, and use of processes of change. The data trends observed in the current study were consistent with the theoretical underpinnings of the TTM as well as previous research on NCAA Division I athletes. The results of the current study highlight the need to consider readiness to change when designing and implementing PST interventions.

scholarly journals Preliminary Scale of Reference Values for Evaluating Reactive Strength Index-Modified in Male and Female NCAA Division I Athletes

Sports ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 133 ◽  
Author(s):  
Christopher Sole ◽  
Timothy Suchomel ◽  
Michael Stone
Keyword(s):  
Reference Values ◽  
Ncaa Division I ◽  
National Collegiate Athletic Association ◽  
Collegiate Athletes ◽  
Division I ◽  
Strength Index ◽  
Male And Female ◽  
Significant Difference ◽  
Males And Females ◽  
Division I Athletes

The purpose of this analysis was to construct a preliminary scale of reference values for reactive strength index-modified (RSImod). Countermovement jump data from 151 National Collegiate Athletic Association (NCAA) Division I collegiate athletes (male n = 76; female n = 75) were analyzed. Using percentiles, scales for both male and female samples were constructed. For further analysis, athletes were separated into four performance groups based on RSImod and comparisons of jump height (JH), and time to takeoff (TTT) were performed. RSImod values ranged from 0.208 to 0.704 and 0.135 to 0.553 in males and females, respectively. Males had greater RSImod (p < 0.001, d = 1.15) and JH (p < 0.001, d = 1.41) as compared to females. No statistically significant difference was observed for TTT between males and females (p = 0.909, d = 0.02). Only JH was found to be statistically different between all performance groups. For TTT no statistical differences were observed when comparing the top two and middle two groups for males and top two, bottom two, and middle two groups for females. Similarities in TTT between sexes and across performance groups suggests JH is a primary factor contributing to differences in RSImod. The results of this analysis provide practitioners with additional insight as well as a scale of reference values for evaluating RSImod scores in collegiate athletes.

Changes of Hydration Measures in Elite National Collegiate Athletic Association Division I Wrestlers

2019 ◽  
Vol 14 (10) ◽  
pp. 1378-1381
Author(s):  
Emily C. Borden ◽  
William J. Kraemer ◽  
Bryant J. Walrod ◽  
Emily M. Post ◽  
Lydia K. Caldwell ◽  
...  
Keyword(s):  
Body Mass ◽  
National Collegiate Athletic Association ◽  
Plasma Osmolality ◽  
Division I ◽  
Urine Specific Gravity ◽  
Hydration Status ◽  
Team Members ◽  
Policies And Procedures ◽  
Highly Correlated ◽  
In The Beginning

Purpose: To evaluate the changes in the state of hydration in elite National Collegiate Athletic Association (NCAA) Division I college wrestlers during and after a season. Methods: Ohio State University wrestling team members (N = 6; mean [SD] age = 19.6 [1.1] y; height = 171.6 [2.9] cm; body mass = 69.5 [8.1] kg) gave informed consent to participate in the investigation with measurements (ie, body mass, urine-specific gravity [USG; 2 methods], Visual Analog Scale thirst scale, plasma osmolality) obtained during and after the season. Results: Measurements for USG, regardless of methods, were not significantly different between visits, but plasma osmolality was significantly (P = .001) higher at the beginning of the season—295.5 (4.9) mOsm·kg−1 compared with 279.6 (6.1) mOsm·kg−1 after the season. No changes in thirst ratings were observed, and the 2 measures of USG were highly correlated (r > .9, P = .000) at each time point, but USG and plasma osmolality were not related. Conclusions: A paradox in the clinical interpretation of euhydration in the beginning of the season was observed with the USG, indicating that the wrestlers were properly hydrated, while the plasma osmolality showed they were not. Thus, the tracking of hydration status during the season is a concern when using only NCAA policies and procedures. The wrestlers did return to normal euhydration levels after the season on both biomarkers, which is remarkable, as previous studies have indicated that this may not happen because of the reregulation of the osmol-regulatory center in the brain.

Agentic Denial: How Athletic Teams Sustain Divergent Structures During Concussion Events

2019 ◽  
Vol 51 (3) ◽  
pp. 342-374
Author(s):  
Alaina C. Zanin ◽  
Jessica K. Kamrath ◽  
Steven R. Corman
Keyword(s):  
Ncaa Division I ◽  
National Collegiate Athletic Association ◽  
Athletic Trainers ◽  
Social Systems ◽  
Division I ◽  
Certified Athletic Trainers ◽  
Team Members ◽  
Athletic Teams ◽  
Division I Athletes ◽  
Depth Interviews

This study reveals how athletic health care teams, embedded within large bureaucratic organizations and complex social systems, negotiate and sustain multiple divergent structures. An iterative analysis of 69 in-depth interviews with National Collegiate Athletic Association (NCAA) Division I athletes’ certified athletic trainers (ATCs) and coaches from four high-contact sports (i.e., women’s lacrosse, men’s wrestling, men’s soccer, and men’s football) revealed that team members coconstructed and negotiated multiple conflicting structures during concussion events. The divergent macro-, meso-, and micro-level structures include (a) formal versus hidden authority structures, (b) prevention versus inevitability discourse, (c) assigned versus enacted roles, and (d) authentic versus inauthentic injury performance. The analysis also revealed how a specific speech act, termed agentic denial, enabled members to obscure their agency within concussion events. Theoretical implications and practical recommendations are discussed.

scholarly journals Changes in Maximal Strength and Home Run Performance in NCAA Division I Baseball Players Across 3 Competitive Seasons: A Descriptive Study

2021 ◽  
Vol 6 (1) ◽  
pp. 4
Author(s):  
W. Guy Hornsby ◽  
Abigail L. Tice ◽  
Jason D. Stone ◽  
Justin J. Merrigan ◽  
Joshua Hagen ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
Repeated Measures ◽  
National Collegiate Athletic Association ◽  
Descriptive Study ◽  
Peak Force ◽  
Division I ◽  
Maximal Strength ◽  
Baseball Players ◽  
Repeated Measures Analysis ◽  
Division 1

The purpose of this longitudinal, descriptive study was to observe changes in maximal strength measured via isometric clean grip mid-thigh pull and home runs (total and home runs per game) across three years of training and three competitive seasons for four National Collegiate Athletic Association (NCAA) Division 1 baseball players. A one-way repeated measures analysis of variance (ANOVA) was performed, revealing significant univariate effects of time for peak force (PF) (p = 0.003) and peak force allometrically scaled (PFa) (p = 0.002). Increases in PF were noted from season 1 to season 2 (p = 0.031) and season 3 (p = 0.004), but season 2 was not significantly different than season 3 (p = 0.232). Additionally, increases in PFa were noted from season 1 to season 2 (p = 0.010) and season 3 (p < 0.001), but season 2 was not significantly different than season 3 (p = 0.052). Home runs per game rose from the 2009 (0.32) to 2010 season (1.35) and dropped during the 2011 season (1.07). A unique aspect of the study involves 2010 being the season in which ball-bat coefficient of restitution (BBCOR) bats were introduced to the NCAA competition.

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