Exertional heat stroke: new concepts regarding cause and care.

When athletes, warfighters, and laborers perform intense exercise in the heat, the risk of exertional heat stroke (EHS) is ever present. The recent data regarding the fatalities due to EHS within the confines of organized American sport are not promising: during the past 35 years, the highest number of deaths in a 5-year period occurred from 2005 to 2009. This reminds us that, regardless of the advancements of knowledge in the area of EHS prevention, recognition, and treatment, knowledge has not been translated into practice. This article addresses important issues related to EHS cause and care. We focus on the predisposing factors, errors in care, physiology of cold water immersion, and return-to-play or duty considerations.

Secondary School Athletic Trainers' Experiences With Organizational Conflict: A Comparison Across Employment Models.

CONTEXT: Athletic training is a multifaceted profession characterized by interpersonal relationships and a team approach to care. Collaborative relationships, by nature, open the door to conflict, which has been reported frequently in the collegiate athletic setting. However, secondary school athletic trainers' (ATs') experiences with conflict and pressure in their role are not readily understood. OBJECTIVE: To measure the extent and sources of stress, pressure, and conflict within the secondary school athletic training setting and determine if differences exist across employment characteristics. DESIGN: Cross-sectional study. SETTING: Secondary school athletics. PATIENTS OR OTHER PARTICIPANTS: Secondary school ATs (n = 725, age = 39.8 ± 10.5 years, years certified = 16.7 ± 9.7, years in current role = 10.6 ± 7.8). MAIN OUTCOME MEASURES: Participants were asked to reply to an online questionnaire with quantitative measures pertaining to organizational conflict and workplace dynamic. Employment type (school district employee, school district teacher, medical or university facility, independent contractor) and status (full time, part time) served as independent variables. Likert-scale scores (1 = strongly agree to 5 = strongly disagree; 1 = always to 5 = never) and perceived sources of stress, pressure, and conflict were the dependent variables. Analyses consisted of Kruskal-Wallis tests with Mann-Whitney U post hoc tests and odds ratios to assess associations between variables of interest. RESULTS: We obtained a 15.3% response rate (725/4745). Although the ATs reported experiencing conflict and pressure, these experiences were relatively infrequent and not universal. Compared with part-time ATs, full-time ATs described higher ratings of strong relationships with coaches (P = .003) and principals (P = .002). The most frequently identified sources of conflict were parents (59%) and coaches (53.9%), followed by athletes (32.6%). Full-time ATs were 1.6 times more likely to report experiencing conflict with a coach than part-time ATs (odds ratio = 1.550, 95% CI = 1.037, 2.317; P = .040). CONCLUSIONS: Secondary school ATs' experiences regarding organizational conflict were relatively positive. Instances of pressure and conflict were noted, though relatively infrequently, and these experiences were largely uninfluenced by employment type.

Establishing a Global Standard for Wearable Devices in Sport and Exercise Medicine: Perspectives from Academic and Industry Stakeholders.

Millions of consumer sport and fitness wearables (CSFWs) are used worldwide, and millions of datapoints are generated by each device. Moreover, these numbers are rapidly growing, and they contain a heterogeneity of devices, data types, and contexts for data collection. Companies and consumers would benefit from guiding standards on device quality and data formats. To address this growing need, we convened a virtual panel of industry and academic stakeholders, and this manuscript summarizes the outcomes of the discussion. Our objectives were to identify (1) key facilitators of and barriers to participation by CSFW manufacturers in guiding standards and (2) stakeholder priorities. The venues were the Yale Center for Biomedical Data Science Digital Health Monthly Seminar Series (62 participants) and the New England Chapter of the American College of Sports Medicine Annual Meeting (59 participants). In the discussion, stakeholders outlined both facilitators of (e.g., commercial return on investment in device quality, lucrative research partnerships, and transparent and multilevel evaluation of device quality) and barriers (e.g., competitive advantage conflict, lack of flexibility in previously developed devices) to participation in guiding standards. There was general agreement to adopt Keadle et al.'s standard pathway for testing devices (i.e., benchtop, laboratory, field-based, implementation) without consensus on the prioritization of these steps. Overall, there was enthusiasm not to add prescriptive or regulatory steps, but instead create a networking hub that connects companies to consumers and researchers for flexible guidance navigating the heterogeneity, multi-tiered development, dynamicity, and nebulousness of the CSFW field.

Analysis of States' Barriers to and Progress Toward Implementation of Health and Safety Policies for Secondary School Athletics.

CONTEXT: Implementation of health and safety best practices for the leading causes of sudden death and catastrophic injury has been shown to mitigate risk. However, to our knowledge, no authors have examined progress toward health and safety policy implementation at the state level. OBJECTIVE: To investigate the progress made by state secondary school leaders in developing and implementing health and safety policies (ie, exertional heat stroke, sudden cardiac arrest, concussion, emergency action plans) and to explore perceived barriers to and strategies for implementation. DESIGN: Mixed-methods study. SETTING: State high school athletics associations and sports medicine advisory committees. PATIENTS OR OTHER PARTICIPANTS: Collaborative Solutions for Safety in Sport meeting attendees participated in this study. Thirty-five state leaders (current role experience = 8 ± 6 years) completed the survey. Ten of the 35 participated in follow-up interviews. DATA COLLECTION AND ANALYSIS: A survey assessing progress on health and safety policy implementation was administered. Respondents indicated whether their state had implemented a policy, made progress without implementation, or made no progress. We conducted follow-up telephone interviews so they could expand on the survey responses. The data were analyzed using descriptive statistics and the general inductive approach. RESULTS: A total of 89% of respondents reported their states made progress on or implemented health and safety policies during the 2015-2016 academic year. Barriers to policy implementation included cost, a lack of understanding regarding policies versus recommendations, the content and value of policy change, and a false sense of security. Strategies for implementation included varying approaches to change, education of all constituents, and collaborative relationships among key stakeholders. CONCLUSIONS: Although a majority of respondents reported progress in implementing health and safety policies in their states, perceived barriers pointed to the need for the continued education of state leaders in charge of developing and implementing health and safety policies. Despite these barriers, collaboration among key stakeholders is crucial to successful implementation of best-practice policies in secondary school athletics.

Athletic Trainer Services in the Secondary School Setting: The Athletic Training Locations and Services Project.

CONTEXT: Previous research from a sample of US secondary schools (n = 10 553) indicated that 67% of schools had access to an athletic trainer (AT; 35% full time [FT], 30% part time [PT], and 2% per diem). However, the population-based statistic in all secondary schools with athletic programs (n = approximately 20 000) is yet to be determined. OBJECTIVE: To determine the level of AT services and employment status in US secondary schools with athletics by National Athletic Trainers' Association district. DESIGN: Cross-sectional study. SETTING: Public and private secondary schools with athletics. PATIENTS OR OTHER PARTICIPANTS: Data from all 20 272 US public and private secondary schools were obtained. MAIN OUTCOME MEASURE(S): Data were collected from September 2015 to April 2018 by phone or e-mail communication with school administrators or ATs and by online surveys of secondary school ATs. Employment categories were school district, school district with teaching, medical or university facility, and independent contractor. Data are presented as total number and percentage of ATs. Descriptive statistics were calculated for FT, PT, and no AT services data for public, private, public + private, and employment type by state and by National Athletic Trainers' Association district. RESULTS: Of the 20 272 secondary schools, 66% (n = 13 473) had access to AT services, while 34% (n = 6799) had no access. Of those schools with AT services, 53% (n = 7119) received FT services, while 47% (n = 6354) received PT services. Public schools (n = 16 076) received 37%, 32%, and 31%, whereas private schools (n = 4196) received 27%, 28%, and 45%, for FT, PT, and no AT services, respectively. Most of the Athletic Training Locations and Services Survey participants (n = 6754, 57%) were employed by a medical or university facility, followed by a school district, school district with teaching, and independent contractor. Combined, 38% of AT employment was via the school district. CONCLUSIONS: The percentages of US schools with AT access and FT and PT services were similar to those noted in previous research. One-third of secondary schools had no access to AT services. The majority of AT employment was via medical or university facilities. These data depict the largest and most updated representation of AT services in secondary schools.

Validity of devices that assess body temperature during outdoor exercise in the heat.

CONTEXT: Rectal temperature is recommended by the National Athletic Trainers' Association as the criterion standard for recognizing exertional heat stroke, but other body sites commonly are used to measure temperature. Few authors have assessed the validity of the thermometers that measure body temperature at these sites in athletic settings. OBJECTIVE: To assess the validity of commonly used temperature devices at various body sites during outdoor exercise in the heat. DESIGN: Observational field study. SETTING: Outdoor athletic facilities. PATIENTS OR OTHER PARTICIPANTS: Fifteen men and 10 women (age = 26.5 +/- 5.3 years, height = 174.3 +/- 11.1 cm, mass = 72.73 +/- 15.95 kg, body fat = 16.2 +/- 5.5%). INTERVENTION(S): We simultaneously tested inexpensive and expensive devices orally and in the axillary region, along with measures of aural, gastrointestinal, forehead, temporal, and rectal temperatures. Temporal temperature was measured according to the instruction manual and a modified method observed in medical tents at local road races. We also measured forehead temperatures directly on the athletic field (other measures occurred in a covered pavilion) where solar radiation was greater. Rectal temperature was the criterion standard used to assess the validity of all other devices. Subjects' temperatures were measured before exercise, every 60 minutes during 180 minutes of exercise, and every 20 minutes for 60 minutes of postexercise recovery. Temperature devices were considered invalid if the mean bias (average difference between rectal temperature and device temperature) was greater than +/-0.27 degrees C (+/-0.5 degrees F). MAIN OUTCOME MEASURE(S): Temperature from each device at each site and time point. RESULTS: Mean bias for the following temperatures was greater than the allowed limit of +/-0.27 degrees C (+/-0.5 degrees F): temperature obtained via expensive oral device (-1.20 degrees C [-2.17 degrees F]), inexpensive oral device (-1.67 degrees C [-3.00 degrees F]), expensive axillary device (-2.58 degrees C [-4.65 degrees F]), inexpensive axillary device (-2.07 degrees C [-3.73 degrees F]), aural method (-1.00 degrees C [-1.80 degrees F]), temporal method according to instruction manual (-1.46 degrees C [-2.64 degrees F]), modified temporal method (-1.36 degrees C [-2.44 degrees F]), and forehead temperature on the athletic field (0.60 degrees C [1.08 degrees F]). Mean bias for gastrointestinal temperature (-0.19 degrees C [-0.34 degrees F]) and forehead temperature in the pavillion (-0.14 degrees C [-0.25 degrees F]) was less than the allowed limit of +/-0.27 degrees C (+/-0.5 degrees F). Forehead temperature depended on the setting in which it was measured and showed greater variation than other temperatures. CONCLUSIONS: Compared with rectal temperature (the criterion standard), gastrointestinal temperature was the only measurement that accurately assessed core body temperature. Oral, axillary, aural, temporal, and field forehead temperatures were significantly different from rectal temperature and, therefore, are considered invalid for assessing hyperthermia in individuals exercising outdoors in the heat.