Much attention has focused on the nutrition and hematological profile of female athletes, especially gymnasts. The few studies on iron status of male adolescent athletes found a low incidence of iron deficiency. The present study investigated the iron status of male and female gymnasts (G) and compared it with athletes of other sports. Subjects were 68 elite athletes (43 M, 25 F) ages 12-18, of four sports: gymnasts (11 M, 12 F), swimmers (11 M, 6 F), tennis players (10 M, 4 F), and table tennis players (11 M, 3 F). All lived in the national center for gifted athletes, trained over 25 hr a week, ate in the same dining room, and shared a similar lifestyle. Mean levels of hemoglobin (Hb), red blood cell indexes, serum ferritin, serum iron, and transferrin were measured in venous blood. There was no difference in mean Rb among gymnasts (G) and nongymnasts (NG). However, Hb was less than 14 g/dL in 45% of M G vs. only 25% in NG, and less than 13 g/dL in 25% of premenarcheal FG vs. 15% in NG. Low transferrin saturation (< 20%) was detected in 18% of M G and 25% of FG vs. 6% and 8% in male and female NG, respectively (p < .05). The percentage of males suffering from low ferritin level (< 20 ng/ml) was twice as high in G (36%) vs. NG (19%), and about 30% in all females. In summary, iron stores were consistently lower in M G vs. NG. Adolescent athletes of both genders, G in particular, are prone to nonanemic iron deficiency, which might compromise their health and athletic performance.
Naama W. Constantini, Alon Eliakim, Levana Zigel, Michal Yaaron and Bareket Falk
Fiona E. Pelly and Sarah J. Burkhart
The aim of this study was to investigate the dietary regimens reported by athletes competing at a major international competition and report whether these were based on nutrient composition, religious beliefs, cultural eating style, food intolerance or avoidance of certain ingredients. A questionnaire was randomly distributed to 351 athletes in the main dining hall of the athletes’ village over the three main meal periods during the Delhi 2010 Commonwealth Games (23rd Sept—14th Oct, 2010). The majority (n = 218, 62%) of athletes reported following one or more dietary regimens, with 50% (n = 174) following a diet based on the nutrient composition of the food. Significantly more athletes from weight category and aesthetic sports (28%, p = .005) and from power/sprint sports (41%, p = .004) followed low fat and high protein regimens respectively. Other specialized dietary regimens were followed by 33% of participants, with avoidance of red meat (13%), vegetarian (7%), Halal (6%), and low lactose regimens (5%) reported most frequently. Significantly more athletes from non-Western regions followed a vegetarian diet (p < .001), while more vegetarians reported avoiding additives (p = .013) and wheat (p ≤ .001). A Western style of eating was the most commonly reported cultural regimen (72% of total with 23% from non-Western regions). Those following a Western diet were significantly more likely to report following a regimen based on nutrient composition (p = .02). As a high proportion of athletes from differing countries and sports follow specialized dietary regimens, caterers and organizers should ensure that adequate nutrition support and food items are available at similar events.
Yuki Kokubo, Yuri Yokoyama, Kumiko Kisara, Yoshiko Ohira, Ayaka Sunami, Takahiro Yoshizaki, Yuki Tada, Sakuko Ishizaki, Azumi Hida and Yukari Kawano
This cross-sectional study explored the prevalence of iron deficiency (ID) and associations between dietary factors and incidence of ID in female rhythmic gymnasts during preseason periods. Participants were 60 elite collegiate rhythmic gymnasts (18.1 ± 0.3 years [M ± SD]) who were recruited every August over the course of 8 years. Participants were divided into 2 groups according to the presence or absence of ID. Presence of ID was defined either by ferritin less than 12 µg/L or percentage of transferrin saturation less than 16%. Anthropometric and hematologic data, as well as dietary intake, which was estimated via a semiquantitative food frequency questionnaire, were compared. ID was noted in 48.3% of participants. No significant group-dependent differences were observed in physical characteristics, red blood cell counts, hemoglobin, hematocrit, haptoglobin, or erythropoietin concentrations. The ID group had a significantly lower total iron-binding capacity; serum-free iron; percentage of transferrin saturation; ferritin; and intake of protein, fat, zinc, vitamin B2, vitamin B6, beans, and eggs but not iron or vitamin C. The recommended dietary allowance for intake of protein, iron, zinc, and various vitamins was not met by 30%, 90%, 70%, and 22%–87% of all participants, respectively. Multiple logistic analysis showed that protein intake was significantly associated with the incidence of ID (odds ratio = 0.814, 95% confidence interval [0.669, 0.990], p = .039). Participants in the preseason’s weight-loss periods showed a tendency toward insufficient nutrient intake and were at a high risk for ID, particularly because of lower protein intake.
president of the American College of Sports Medicine in 1988. Barbara was a forerunner in the field of female athlete triad (Triad)/relative energy deficiency in sport (RED-S). Beyond this, Barbara was also vocal in the arena of women in sport, including increased opportunity and participation, total
Lindsey E. Eberman, Kimberly J. Bodey, Rebecca Zakrajsek, Madeline McGuire and Adam Simpson
The National Standards for Sport Coaches (2006) acknowledges that differences exist in athletes’ ability to tolerate heat. As such, Domain 2: Safety and Injury Prevention (S7-10), Domain 3: Physical Conditioning (S12-13), and Domain 7: Organization and Administration (S34) list expectations for coaches’ ability to recognize and respond to heat illness. However, only the American Red Cross of Greater Indianapolis (Domain 2 specific) and 13 programs are accredited by NCACE. Moreover, on-line trainings frequently used to educate novice interscholastic and recreational sport coaches provide only a cursory review of heat illness precautions, symptoms, and remedies.
The purpose of this exploratory study is to identify changes in coaches’ actual and perceived knowledge after an on-line educational intervention, as well as determine whether the educational intervention will decrease the knowledge gap.
A pre-test/post-test design was used to identify the effect of an educational intervention on perceived and actual knowledge of sport coaches.
Coaches (n=19; male=14, female=5) were solicited via email made available by the Indiana High School Athletic Association and the Indiana Youth Soccer Association – Olympic Development Program.
The Perceived Knowledge Questionnaire (five-item survey) and an actual knowledge assessment (two versions of 19-item quiz) were used to measure the coaches’ perceived and actual knowledge about the prevention, recognition, and treatment of exertional heat illnesses. Participants completed the “Beat the Heat: Be a Better Coach in Extreme Environmental Conditions” educational intervention.
Coaches completed the on-line educational module including pre-test and post-tests evaluations of actual and perceived knowledge.
Researchers performed three separate paired t-tests to identify the effect of the educational intervention on the dependent variables: actual knowledge, perceived knowledge, and knowledge gap. Significance was set a-prior at p<0.05.
Participants demonstrated a significant 18.1% improvement (t18=-4.877, p<0.001, ES=0.62) in actual knowledge scores. Perceived knowledge also significantly improved (t18=-2.585, p=0.019, ES=0.25). Knowledge gap, the difference between actual knowledge and perceived knowledge, became significantly smaller (t18=4.850, p<0.001, ES=0.63).
Results indicate the on-line educational intervention improved actual knowledge, perceived knowledge, and decreased the knowledge gap. Additional large scale study of this intervention is warranted.
Stephan R. Fisher, Justin H. Rigby, Joni A. Mettler and Kevin W. McCurdy
regulatory factors, and increases the formation of new red blood cells locally. 2 These effects make PBMT a valuable treatment option for muscle recovery; however, PBMT has not become a mainstream tool for muscle recovery in clinical practice. For decades, cryotherapy has been a popular modality for
Jennifer Sygo, Alexandra M. Coates, Erik Sesbreno, Margo L. Mountjoy and Jamie F. Burr
Relative energy deficiency in sport (RED-S) is a term used to describe the wide-ranging physiological, health, and performance-related effects associated with inadequate energy intake in athletes or active individuals ( Mountjoy et al., 2014 ). RED-S is a syndrome that can affect numerous body
Thomas M. Hunt
the Modern Games , Alfred E. Senn’s Power, Politics, and the Olympic Games , Toby C. Rider’s Cold War Games: Propaganda, the Olympics, and U.S. Foreign Policy , Jenifer Parks’s The Olympic Games, the Soviet Sports Bureaucracy, and the Cold War: Red Sport, Red Tape , and David Goldblatt’s The Games
Bastian Popp, Chris Horbel and Claas Christian Germelmann
-sponsor-brand communities studied in this research (see Table 1 ) are relatively small compared with the number of followers of the official Facebook brand pages of the sponsors and clubs (RB Leipzig, 365,310 likes, 363,099 followers; Red Bull, 49,001,369 likes, 47,835,239 followers; SV Werder Bremen, 1,000,032 likes, 988
Neil Armstrong and Jo Welsman
] to compare children and adolescents who vary greatly in body size and fatness to avoid bias/mistakes when interpreting aerobic fitness in athletic performance and also in clinical settings (eg, clinical red flags)”. As well as advocating the exploration of more than a single covariate, we recommend a