scholarly journals 391 A comparison of the prevalence and severity of health problems in national team cross-country skiers over a competitive season

2021 ◽  
Author(s):  
Øyvind Karlsson ◽  
Magnus Danemar ◽  
Marko S Laaksonen ◽  
Kerry McGawley
Keyword(s):  
Health Problems ◽  
National Team ◽  
Competitive Season ◽  
Cross Country

scholarly journals Prevalence and Burden of Health Problems in Male Elite Ice Hockey Players: A Prospective Study in the Norwegian Professional League

2020 ◽  
Vol 8 (2) ◽  
pp. 232596712090240 ◽  
Author(s):  
Anine Nordstrøm ◽  
Roald Bahr ◽  
Ove Talsnes ◽  
Ben Clarsen
Keyword(s):  
Lumbar Spine ◽  
Negative Impact ◽  
Health Problems ◽  
Cross Product ◽  
Ice Hockey ◽  
Overuse Injuries ◽  
Trauma Research ◽  
Competitive Season ◽  
Acute Injuries ◽  
Hockey Players

Background: As previous epidemiological studies in elite ice hockey have focused on acute time-loss injuries, little is known about the burden of overuse injuries and illnesses in ice hockey. Purpose: To report the prevalence and burden of all health problems in male professional ice hockey players in Norway during a single competitive season. Study Design: Descriptive epidemiological study. Methods: A total of 225 male ice hockey players in the GET League (the premier professional league) in Norway reported all health problems (acute injuries, overuse injuries, and illnesses) during the 2017-2018 competitive season. Players reported all injuries and illnesses for 31 weeks using the Oslo Sports Trauma Research Center Questionnaire on Health Problems. Results: At any given time, 40% (95% CI, 37%-43%) of players reported symptoms from an injury or illness, and 20% (95% CI, 19%-22%) experienced health problems with a substantial negative impact on training and performance. Acute injuries represented the greatest incidence, prevalence, and burden (defined as the cross-product of severity and incidence). The most burdensome acute injuries were to the head/face, shoulder/clavicle, knee, and ankle. The most burdensome overuse injuries were to the knee, lumbar spine, and hip/groin. Conclusion: This registration captured a greater burden from overuse injuries than traditional injury registration, but acute injuries did represent a major problem. These data provide guidance in the development of prevention programs for both acute and overuse injuries, which should focus on the lumbar spine, hip/groin, and knee.

scholarly journals Revising the self-report strengths and difficulties questionnaire for cross-country comparisons of adolescent mental health problems: the SDQ-R

2019 ◽  
Vol 29 ◽  
Author(s):  
E. L. Duinhof ◽  
K. M. Lek ◽  
M. E. de Looze ◽  
A. Cosma ◽  
J. Mazur ◽  
...  
Keyword(s):  
Mental Health ◽  
Measurement Invariance ◽  
Mental Health Problems ◽  
Adolescent Mental Health ◽  
Measurement Model ◽  
Health Problems ◽  
The Self ◽  
Self Report ◽  
Emotional Symptoms ◽  
Cross Country

Abstract Aims The Strengths and Difficulties Questionnaire (SDQ) has been used in many epidemiological studies to assess adolescent mental health problems, but cross-country comparisons of the self-report SDQ are scarce and so far failed to find a good-fitting, common, invariant measurement model across countries. The present study aims to evaluate and establish a version of the self-report SDQ that allows for a valid cross-country comparison of adolescent self-reported mental health problems. Methods Using the Health Behaviour in School-aged Children study, the measurement model and measurement invariance of the 20 items of the self-report SDQ measuring adolescent mental health problems were evaluated. Nationally representative samples of 11-, 13- and 15-year old adolescents (n = 33 233) from seven countries of different regions in Europe (Bulgaria, Germany, Greece, the Netherlands, Poland, Romania, Slovenia) were used. Results In order to establish a good-fitting and common measurement model, the five reverse worded items of the self-report SDQ had to be removed. Using this revised version of the self-report SDQ, the SDQ-R, partial measurement invariance was established, indicating that latent factor means assessing conduct problems, emotional symptoms, peer relationships problems and hyperactivity-inattention problems could be validly compared across the countries in this study. Results showed that adolescents in Greece scored relatively low on almost all problem subscales, whereas adolescents in Poland scored relatively high on almost all problem subscales. Adolescents in the Netherlands reported the most divergent profile of mental health problems with the lowest levels of conduct problems, low levels of emotional symptoms and peer relationship problems, but the highest levels of hyperactivity-inattention problems. Conclusions With six factor loadings being non-invariant, partial measurement invariance was established, indicating that the 15-item SDQ-R could be used in our cross-country comparison of adolescent mental health problems. To move the field of internationally comparative research on adolescent mental health forward, studies should test the applicability of the SDQ-R in other countries in- and outside Europe, continue to develop the SDQ-R as a cross-country invariant measure of adolescent mental health, and examine explanations for the found country differences in adolescent mental health problems.

scholarly journals Relationship Between Hepcidin, Interluken-6, And Ferritin In Division-I Cross-country Runners Over A Competitive Season

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 25
Author(s):  
Jesse A. Goodrich ◽  
Sewan Kim ◽  
Dillon J. Frisco ◽  
Kimberly Detwiler ◽  
Miguel Rueda ◽  
...  
Keyword(s):  
Division I ◽  
Competitive Season ◽  
Cross Country ◽  
Cross Country Runners

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

Changes in Achilles’ Tendon Cross-sectional Area in Collegiate Cross-country Runners Across a Competitive Season

2014 ◽  
Vol 46 ◽  
pp. 951
Author(s):  
Katy Neves ◽  
A Wayne Johnson ◽  
Joseph William Myrer ◽  
Coulter Neves ◽  
Jarom Bridges ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Cross Sectional ◽  
Competitive Season ◽  
Cross Country ◽  
Cross Country Runners

In-Season Dietary Adequacy of Trained Male Cross-Country Runners

1995 ◽  
Vol 5 (1) ◽  
pp. 45-55 ◽  
Author(s):  
Robert A. Niekamp ◽  
Janine T. Baer
Keyword(s):  
Body Weight ◽  
Energy Expenditure ◽  
Dietary Adequacy ◽  
Carbohydrate Consumption ◽  
Normal Limits ◽  
Diet Records ◽  
Competitive Season ◽  
Daily Energy ◽  
Cross Country ◽  
Cross Country Runners

The purpose of this study was to determine the dietary adequacy of 12 collegiate cross-country runners during a competitive season. Four-day diet records were collected twice during the season and analyzed for total daily energy, macronutrients, vitamin A, vitamin C, thiamin, riboflavin, niacin, vitamin , folate, iron, magnesium, zinc, and calcium. Mean energy intake (3,248 ± 590 kcal) was not significantly different from estimated mean energy expenditure (3,439 ± 244 kcal). Week 8 mean prealbumin levels were within normal limits (26.8 ± 2.8 mg/dl). Mean daily CHO intake was 497 ± 134 g/day (61.2%). Three to four hours prior to competition a pre-race meal was consumed; it contained 82 ± 47 g CHO. Posteompetition CHO intake was delayed an average 2.5 hr; at that time approximately 2.6 ± 0.69 g CHO/kg body weight was consumed. The athletes appeared to demonstrate dietary adequacy with the exception of timing of posteompetition carbohydrate consumption.

scholarly journals Is Hemoglobin Mass at Age 16 a Predictor for National Team Membership at Age 25 in Cross-Country Skiers and Triathletes?

2021 ◽  
Vol 3 ◽  
Author(s):  
Jon Peter Wehrlin ◽  
Thomas Steiner
Keyword(s):  
Carbon Monoxide ◽  
Body Weight ◽  
Endurance Performance ◽  
Important Predictor ◽  
Endurance Athletes ◽  
Young Athletes ◽  
High Performing ◽  
National Team ◽  
Cross Country ◽  
Hemoglobin Mass

We recently measured the development of hemoglobin mass (Hbmass) in 10 Swiss national team endurance athletes between ages 16–19. Level of Hbmass at age 16 was an important predictor for Hbmass and endurance performance at age 19. The aim was to determine how many of these young athletes were still members of Swiss national teams (NT) at age 25, how many already terminated their career (TC), and whether Hbmass at ages 16 and 19 was different between the NT and TC group. We measured Hbmass using the optimized carbon monoxide re-breathing technique in 10 high-performing endurance athletes every 0.5 years beginning at age 16 and ending at age 19. At age 25, two athletes were in the NT group and eight athletes in the TC group. Mean absolute, body weight-, and lean body mass (LBM) related Hbmass at age 16 was 833 ± 61 g, 13.7 ± 0.2 g/kg and 14.2 ± 0.2 g/kg LBM in the NT group and 742 ± 83 g, 12.2 ± 0.7 g/kg and 12.8 ± 0.8 g/kg LBM in the TC group. At age 19, Hbmass was 1,042 ± 89 g, 14.6 ± 0.2 g/kg and 15.4 ± 0.2 g/kg LBM in the NT group and 863 ± 109 g, 12.7 ± 1.1 g/kg and 13.5 ± 1.1 g/kg LBM in the TC group. Body weight- and LBM related Hbmass were higher in the NT group than in the TC group at ages 16 and 19 (p &lt; 0.05). These results indicate, that Hbmass at ages 16 and 19 possibly could be an important predictor for later national team membership in endurance disciplines.

Precompetitive Mood States and Performance of Elite Male Golfers: Do Trait Characteristics Make a Difference?

1998 ◽  
Vol 86 (3_suppl) ◽  
pp. 1443-1457 ◽  
Author(s):  
Peter Hassmén ◽  
Nathalie Koivula ◽  
Torsten Hansson
Keyword(s):  
Athletic Performance ◽  
Mood States ◽  
Profile Of Mood States ◽  
National Team ◽  
Considerable Research ◽  
Anxiety Test ◽  
Competitive Season ◽  
Sport Competition ◽  
And Performance ◽  
The Relationship

The relationship between preperformance mood, measured by the Profile of Mood States inventory, and subsequent athletic performance has been the focus of considerable research. Presumably, athletes with less positive mood profiles should be outperformed by those with more favorable profiles. The results presented so far in the literature are equivocal. One possible explanation is that more stable trait characteristics might mediate mood states prior to competitive situations. In the present study, 8 male golf players, all members of the Swedish National Team, completed a number of trait inventories (Eysenck's Personality Inventory, Locus of Control, Sport Competition Anxiety Test, Self-consciousness Scale) prior to the competitive season. Subsequently, they completed the Profile of Mood States before each game played. Analysis showed that the players' preperformance mood states differed significantly and that these differences were associated with their scores on the trait inventories. Furthermore, preperformance mood states were significantly related to athletic performance for some individuals but not for others. Further research should also include trait measurements to understand better the relationship between mood states and the athletic performance of individual athletes.

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