scholarly journals Assessment of sleep quality and daytime sleepiness in German national ice hockey players preparing for the world championship

2020 ◽  
Author(s):  
Annika Hof zum Berge ◽  
Fabian Loch ◽  
Karl Schwarzenbrunner ◽  
Alexander Ferrauti ◽  
Tim Meyer ◽  
...  
Keyword(s):  
Sleep Quality ◽  
Daytime Sleepiness ◽  
Ice Hockey ◽  
Effect Sizes ◽  
Subjective Sleep Quality ◽  
World Championship ◽  
National Team ◽  
Hockey Players ◽  
The World ◽  
National League

Abstract Objectives Objectives were to examine subjective sleep quality and daytime sleepiness of the German ice hockey junior national team prior to the world championship to identify athletes of concern and areas of optimization with the intention of equally preventing injury and enhancing performance. Methods Twenty-one athletes (Mage = 18.5 ± 0.6 years, Mheight = 181.7 ± 4.3 cm, Mweight = 81.4 ± 7.1 kg), playing for national (n = 13) and international (n = 8) home clubs, answered the Pittsburgh Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS) before training camp (T1, day 1) and prior to tournament (T2, day 11). Results Overall, 9 players at T1 and 7 at T2 were identified as bad sleepers (PSQI > 5), while high sleepiness (ESS > 10) was found for 6 athletes at each measurement time. Group means and standard deviations reduced descriptively for PSQI (T1 = 5.38 ± 2.31, T2 = 4.57 ± 2.36) and ESS (T1 = 9.24 ± 3.74, T2 = 8.48 ± 3.28). Tendential differences were visible for PSQI in international-based players (Z = −1.7, p = 0.09) and ESS in first-national-league players (Z = −1.73, p = 0.08) over time. Higher PSQI values for international-based players (6.25 ± 2.6) were found compared to first-national-league (5.83 ± 1.60) and lower-league players (4.00 ± 2.08), with large effect sizes for lower-league compared to international (d = 0.95) and national players (d = 0.98) at T1 and small effect sizes compared to first-league players (d = 0.24) at T2. Conclusion Findings emphasize great vulnerability and individuality and underline the importance of intraindividual sleep monitoring to meet the requirements needed to equally obtain health and enhance overall performance.

Fitness Tests and Match Performance in a Male Ice Hockey National League

2020 ◽  
pp. 1-8
Author(s):  
Thomas Haugen ◽  
Will Hopkins ◽  
Felix Breitschädel ◽  
Gøran Paulsen ◽  
Paul Solberg
Keyword(s):  
Performance Measures ◽  
Bench Press ◽  
Marginal Utility ◽  
Ice Hockey ◽  
Countermovement Jump ◽  
Repetition Maximum ◽  
National Team ◽  
Hockey Players ◽  
Fitness Tests ◽  
National League

Purpose: To determine if generic off-ice physical fitness tests can provide useful predictions of ice hockey players’ match performance. Methods: Approximately 40 to 60 defenders and 70 to 100 forwards from the Norwegian male upper ice hockey league were tested for strength (1-repetition maximum in squat and bench press), power (40-m sprint and countermovement jump), and endurance (hanging sit-ups, chins, and 3000-m run) annually at the end of every preseason period between 2008 and 2017. Measures of match performance were each player’s season mean counts per match of assists, points, goals, penalty minutes, and plus-minus score. Results: Overall, match performance measures displayed trivial to small correlations with the fitness tests. More specifically, points per game had at most small correlations with measures of strength (range, approximately −0.2 to 0.3), speed (approximately −0.2 to 0.3), and endurance (approximately −0.1 to 0.3). After adjustments for age that showed moderate to large correlations with player match performance, multiple-regression analyses of each test measure still provided some predictability among players of the same age. However, players selected for the national team had substantially better mean scores for most tests and match performance measures than those not selected, with a moderate to large difference for age, 1-repetition maximum squat, and 1-repetition maximum bench press. Conclusions: Fitness tests had only marginal utility for predicting match performance in Norwegian hockey players, but those selected into the national team had better general fitness.

436 Obstructive Sleep Apnea Treatment (e.g., CPAP) Differential Effects on Cognitive Performance

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A172-A173
Author(s):  
Ei Hlaing ◽  
Stephanie Clancy Dollinger ◽  
Terry Brown
Keyword(s):  
Sleep Quality ◽  
Cognitive Deficits ◽  
Daytime Sleepiness ◽  
Short Term Memory ◽  
Cognitive Tests ◽  
Subjective Sleep Quality ◽  
Cognitive Improvement ◽  
Cpap Treatment ◽  
Integrative Research ◽  
Obstructive Sleep

Abstract Introduction The efficacy of CPAP treatment for cognitive improvement among patients with OSA is inconsistent. Naegele et al. (1995) found that short term memory impairment persisted even after 4 to 6 months of CPAP; O’Donoghue et al. (2012) have reported they did not find improvement in vigilance or memory; Felver-Grant (2007) found that working memory improved but not other cognitive tests. Kanbay et al. (2015) found patients improved on the MMSE scores after 3 months of CPAP treatment. Kim et al. (2018) claimed just 3 weeks of CPAP treatment improved attention, sleep quality, and excessive daytime sleepiness (EDS). CPAP therapy has little effect on the improvement of cognitive deficits associated with OSA if the patients did not complain of daytime sleepiness (Zhou et al,, 2016). Methods Both untreated OSA patients (N=19) and ApneaLinkTM- screened controls (N=16) were administered a battery of cognitive tests before the patients started using CPAP and these two conditions were tested again after 3 months of CPAP treatment. A Fisher’s Exact Chi-Square test was used to determine if there was an association between conditions (OSA patients vs. Controls) and level of performance on cognitive tests (low vs. high scores) at the baseline and after 3 months of treatment. Results Depression scores, subjective sleep quality scores (global PSQI), EDS scores (Epworth Sleepiness Scale), and mood disturbance (Profile of Mood States) decreased after 3 months of CPAP treatment just for patients. Controls (individuals without moderate or severe OSA) performed better at the second time on phonemic fluency, immediate recall memory test, and 30 minute delayed memory recall test. Conclusion The fact that patients did not do better at time 2 on any of the cognitive tests may indicate a long term effect of hypoxia on the brain. The cognitive deficits may not reverse within the first 3 months of CPAP although self-reported depressive symptoms and perception of sleep quality and positive mood have improved when patients reported they are compliant with the treatment. Support (if any) A grant from the Center for Integrative Research on Cognitive Neural Science, Southern Illinois University Carbondale was received.

scholarly journals Game Intensity Analysis of Elite Adolescent Ice Hockey Players

2014 ◽  
Vol 44 (1) ◽  
pp. 211-221 ◽  
Author(s):  
Arkadiusz Stanula ◽  
Robert Roczniok
Keyword(s):  
Oxygen Uptake ◽  
Ice Hockey ◽  
Maximal Heart Rate ◽  
Mean Values ◽  
National Team ◽  
Hockey Players ◽  
Physiological Demands ◽  
The Difference ◽  
Uptake Test ◽  
Aerobic And Anaerobic

Abstract The purpose of this study was to determine ice-hockey players’ playing intensity based on their heart rates (HRs) recorded during a game and on the outcomes of an incremental maximum oxygen uptake test. Twenty ice-hockey players, members of the Polish junior national team (U18), performed an incremental test to assess their maximal oxygen uptake (V̇ O2max) in the two week’s period preceding 5 games they played at the World Championships. Players’ HRs at the first and second ventilatory thresholds obtained during the test were utilized to determine intensity zones (low, moderate, and high) that were subsequently used to classify HR values recorded during each of the games. For individual intensity zones, the following HRs expressed as mean values and as percentages of the maximal heart rate (HRmax) were obtained: forwards 148-158 b⋅min-1 (79.5-84.8% HRmax), 159-178 b⋅min-1 (85.4-95.6% HRmax), 179-186 b⋅min-1 (96.1-100.0% HRmax); defensemen 149-153 b⋅min-1 (80.0-82.1% HRmax), 154-175 b⋅min-1 (82.6- 94.0% HRmax), 176-186 b⋅min-1 (94.5-100.0% HRmax). The amount of time the forwards and defensemen spent in the three intensity zones expressed as percentages of the total time of the game were: 54.91 vs. 55.62% (low), 26.40 vs. 22.38% (moderate) and 18.68 vs. 22.00% (high). The forwards spent more time in the low intensity zone than the defensemen, however, the difference was not statistically significant. The results of the study indicate that using aerobic and anaerobic metabolism variables to determine intensity zones can significantly improve the reliability of evaluation of the physiological demands of the game, and can be a useful tool for coaches in managing the training process.

Injuries in women's international ice hockey: an 8-year study of the World Championship tournaments and Olympic Winter Games

2015 ◽  
Vol 50 (22) ◽  
pp. 1406-1412 ◽  
Author(s):  
Markku Tuominen ◽  
Michael J Stuart ◽  
Mark Aubry ◽  
Pekka Kannus ◽  
Kari Tokola ◽  
...  
Keyword(s):  
Ice Hockey ◽  
World Championship ◽  
The World

scholarly journals Perfectionism and achievement goals in young Finnish ice-hockey players aspiring to make the Under-16 national team

2009 ◽  
Vol 27 (1) ◽  
pp. 85-94 ◽  
Author(s):  
Joachim Stoeber ◽  
Oliver Stoll ◽  
Olli Salmi ◽  
Jukka Tiikkaja
Keyword(s):  
Achievement Goals ◽  
Ice Hockey ◽  
National Team ◽  
Hockey Players

scholarly journals ASSOCIATIONS OF GENERAL MENTAL HEALTH SYMPTOMS WITH SUBJECTIVE SLEEP QUALITY AND INDIVIDUAL DAYTIME SLEEPINESS

2019 ◽  
Vol 6 (4) ◽  
pp. 192-199
Author(s):  
R.S. Schierholz ◽  
I. Zavgorodniy ◽  
S. Darius ◽  
I. Böckelmann
Keyword(s):  
Mental Health ◽  
Sleep Quality ◽  
Daytime Sleepiness ◽  
General Health Questionnaire ◽  
Poor Sleep ◽  
Mental Health Symptoms ◽  
Subjective Sleep Quality ◽  
Health Symptoms ◽  
General Mental Health ◽  
Subjective Sleep

ASSOCIATIONS OF GENERAL MENTAL HEALTH SYMPTOMS WITH SUBJECTIVE SLEEP QUALITY AND INDIVIDUAL DAYTIME SLEEPINESS Schierholz RS, Zavgorodniy I., Darius S., Böckelmann I. Purpose: Sufficient sleep quality plays a significant role for long-term physical and mental health. The aim of this study was to examine the associations of general mental health symptoms with sleep quality and daytime sleepiness. Materials and Methods: A cross-sectional survey with 84 included participants (female: n = 42, male: n = 42) was conducted. General mental health symptoms were assessed using the 12-item General Health Questionnaire (GHQ-12), sleep quality was measured with the Pittsburgh Sleep Quality Index (PSQI), and daytime sleepiness was evaluated with the Epworth Sleepiness Scale (ESS). Statistical differences were calculated using two-sample t-test and Mann-Whitney U test. For correlation analyses Spearman’s rank correlation was used. Results: Subjects with poor sleep quality reached higher scores in the GHQ-12 and in the ESS than subjects with good sleep quality, but the difference regarding the ESS was not significant. Higher GHQ-12 scores were associated with higher PSQI scores but not with higher ESS scores. Conclusions: Major findings show strong evidence of an association between general mental health symptoms and sleep quality with poor sleepers having a more disturbed mental health than good sleepers. Further evidence of the interrelationship between subjective sleep quality and general mental health symptoms was found. Keywords: Mental health, Work ability, Stress, Sleep, Insomnia   Абстракт ЗВ’ЯЗОК ЗАГАЛЬНИХ СИМПТОМІВ ПСИХІЧНОГО ЗДОРОВ'Я З СУБ'ЄКТИВНОЮ ЯКІСТЮ СНУ ТАІНДИВІДУАЛЬНОЮ ДЕННОЮ СОНЛИВІСТЮ Робін Себастьян Шірхольц*, Ігор Завгородній, Сабіна Даріус, Ірина Беккельман Мета: Достатня якість сну відіграє важливу роль для тривалого фізичного та психічного здоров’я. Метою цьогодослідження було вивчення залежності загальних симптомів психічного здоров’я від якісті сну та денноїсонливості. Матеріали та методи: Було проведено перехресне опитування за участю 84 учасників (жінки: n = 42, чоловіки: n= 42). Загальні симптоми психічного здоров’я оцінювали за допомогою Анкети загального здоров’я (GHQ-12), яка містить 12 пунктів; якість сну оцінювали за допомогою Пітсбургського опитувальника якості сну (PSQI), а денну сонливість оцінювали за Шкалою сонливості Епворта (ESS). Статистичні відмінності розраховувались за допомогою двопробного t-тесту та U-тесту Манна-Вітні. Для кореляційного аналізу було використано рангову кореляцію Спірмена. Результати: Суб'єкти з низькою якістю сну показали більш високі показники у GHQ-12 та ESS, ніж суб'єкти із хорошою якістю сну, але різниця щодо ESS була несуттєвою. Більш високі показники GHQ-12 були пов'язані з більш високими показниками PSQI, але не з більш високими показниками ESS. Висновки: Основні результати виявляють вагомі докази зв'язку між загальними симптомами психічного здоров’я та якістю сну людей, які погано сплять, та людей з міцним сном. У людей з поганим сном більш виражені порушення психічного здоров’я. Були знайдені додаткові докази взаємозв'язку між суб'єктивною якістю сну та загальними симптомами психічного здоров'я. Ключові слова: Психічне здоров'я, працездатність, стрес, сон, безсоння    Абстракт СВЯЗЬ ОБЩИХ СИМПТОМОВ ПСИХИЧЕСКОГО ЗДОРОВЬЯ С СУБЪЕКТИВНЫМ КАЧЕСТВОМ СНА И ИНДИВИДУАЛЬНОЙ ДНЕВНОЙ СОНЛИВОСТЬЮ Робин Себастьян Ширхольц, Игорь Завгородний, Сабина Дариус, Ирина Беккельманн Цель: Достаточное качество сна играет важную роль для долгосрочного физического и психического здоровья. Целью данного исследования было изучение связи общих симптомов психического здоровья с качеством сна и дневной сонливостью. Материалы и методы. Было проведено перекрестное исследование с 84 участниками (женщины: n = 42, мужчины: n = 42). Общие симптомы психического здоровья оценивали с использованием Общего опросника здоровья (GHQ-12), содержащего 12 пунктов; качество сна оценивали с помощью Питтсбургского опросника качества сна (PSQI), а дневную сонливость оценивали по Шкале сонливости Эпворта (ESS). Статистические различия рассчитывали с использованием двухпробного t-теста и U-теста Манна-Уитни. Для корреляционного анализа была использована ранговая корреляция Спирмена. Результаты: Субъекты с плохим качеством сна показали более высокие баллы в GHQ-12 и в ESS, чем субъекты с хорошим качеством сна, но разница в отношении ESS не была значительной. Более высокие показатели GHQ-12 были связаны с более высокими показателями PSQI, но не с более высокими показателями ESS. Выводы: Основные результаты обнаруживают убедительные доказательства связи между общими симптомами психического здоровья и качеством сна людей, которые плохо спят, и людей с крепким сном. У людей с плохим сном более выражены нарушения психического здоровья. Были найдены дополнительные доказательства взаимосвязи между субъективным качеством сна и общими симптомами психического здоровья. Ключевые слова: психическое здоровье, трудоспособность, стресс, сон, бессонница

scholarly journals Performance Changes of Elite Paralympic Judo Athletes During a Paralympic Games Cycle: A Case Study with the Brazilian National Team

2017 ◽  
Vol 60 (1) ◽  
pp. 217-224 ◽  
Author(s):  
Irineu Loturco ◽  
Lucas A. Pereira ◽  
Ciro Winckler ◽  
Jaime R. Bragança ◽  
Roger A. da Fonseca ◽  
...  
Keyword(s):  
Upper Limb ◽  
Muscle Power ◽  
Repeated Measurements ◽  
Performance Assessments ◽  
Power Performance ◽  
World Championship ◽  
National Team ◽  
The World ◽  
Judo Athletes ◽  
Paralympic Games

Abstract The aim of this study was to describe the variations in power performance of elite Paralympic judo athletes across three consecutive training cycles of preparation for the ParaPan American Games, the World Championship and the Paralympic Games. Eleven Paralympic judokas from the Brazilian National team participated in this study. They were repeatedly assessed using squat and countermovement jumps, mean propulsive power (MPP) in the jump-squat (JS), the bench press and prone bench pull at several moments of the preparation. Training supervision based on the optimum power zone (range of loads where power production is maximized) was provided in the final cycle, prior to the Paralympic Games. Magnitude-based inference was used to compare the repeated measurements of power performance. Lower and upper limb muscle power gradually increased throughout the cycles; however, the best results in all exercises were observed prior to the Paralympic Games, during which the team won four silver medals. As an illustration, prior to participation in the Paralympic Games the MPP in the JS was likely to very likely higher than prior to the World Championship (effect size [ES] = 0.77) and ParaPan American Games (ES = 0.53), and in January and March 2016 (ES = 0.98 and 0.92, respectively; months preceding the Paralympic Games). Power performance assessments can provide information about the evolution of Paralympic judokas, and training at the optimum power zone seems to constitute an effective method to improve lower and upper limb power in these athletes.

The association of smartphone usage with subjective sleep quality and daytime sleepiness among medical students

2018 ◽  
Vol 50 (6) ◽  
pp. 857-865 ◽  
Author(s):  
Pavle Randjelović ◽  
Nenad Stojiljković ◽  
Niko Radulović ◽  
Ivan Ilić ◽  
Nikola Stojanović ◽  
...  
Keyword(s):  
Medical Students ◽  
Sleep Quality ◽  
Daytime Sleepiness ◽  
Subjective Sleep Quality ◽  
Subjective Sleep

scholarly journals Sleep Quality and Chronotype Differences between Elite Athletes and Non-Athlete Controls

2018 ◽  
Vol 1 (1) ◽  
pp. 3-12 ◽  
Author(s):  
Amy Bender ◽  
Hans Van Dongen ◽  
Charles Samuels
Keyword(s):  
Sleep Quality ◽  
Sleep Disturbances ◽  
Elite Athletes ◽  
Group Differences ◽  
Control Group ◽  
Global Score ◽  
Subjective Sleep Quality ◽  
Wake Time ◽  
National Team ◽  
Composite Scale

Previous research has found that elite athletes have insufficient sleep, yet the specific kinds of sleep disturbances occurring as compared to a control group are limited. Here we compare the subjective sleep quality and chronotype of elite athletes to a control group of non-athlete good sleepers. Sixty-three winter Canadian National Team athletes (mean age 26.0 ± 0.0; 32% females) completed the Pittsburgh Sleep Quality Index (PSQI) and the Athlete Morningness Eveningness Scale. They were compared to 83 healthy, non-athlete, good-sleeper controls (aged 27.3 ± 3.7; 51% females) who completed the PSQI and the Composite Scale of Morningness. The elite athletes reported poorer sleep quality (PSQI global score 5.0 ± 2.6) relative to the controls (PSQI global score 2.6 ± 1.3), despite there being no group difference in self-reported sleep duration (athletes 8.1 ± 1.0 h; controls 8.0 ± 0.7 h). Further, athletes’ chronotype distribution showed a greater skew toward morningness, despite there being no group differences in self-reported usual bedtime and wake time. These results suggest that a misalignment of sleep times with circadian preference could contribute to poorer sleep quality in elite athletes.

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