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https://www.readbyqxmd.com/read/29239995/development-of-anaerobic-fitness-in-top-level-competitive-youth-ice-hockey-players
#1
Jeff R Leiter, Dean M Cordingley, Peter B MacDonald
Ice hockey is a physiologically complex sport involving both the anaerobic and aerobic energy systems. The purpose of this study was to evaluate the anaerobic power output (PO) of top-level competitive youth hockey players. It was hypothesized that with each successive increase in age there would be an associated change in anaerobic PO. Two hundred and fifty-one male hockey players between the ages of 13-17 years of age participated in this study. All athletes completed a 30-second Wingate test as part of a pre-season physiological and fitness combine...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29238245/explaining-match-outcome-during-the-men-s-basketball-tournament-at-the-olympic-games
#2
Anthony S Leicht, Miguel A Gómez, Carl T Woods
In preparation for the Olympics, there is a limited opportunity for coaches and athletes to interact regularly with team performance indicators providing important guidance to coaches for enhanced match success at the elite level. This study examined the relationship between match outcome and team performance indicators during men's basketball tournaments at the Olympic Games. Twelve team performance indicators were collated from all men's teams and matches during the basketball tournament of the 2004-2016 Olympic Games (n = 156)...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29233376/a-pharmacy-student-s-role-as-a-teaching-assistant-in-an-undergraduate-medicinal-chemistry-course-implementation-evaluation-and-unexpected-opportunities-for-educational-outreach
#3
Matthew J DellaVecchia, Alyssa M Claudio, Jamie L Fairclough
BACKGROUND AND PURPOSE: To describe 1) a pharmacy student's teaching assistant (TA) role in an undergraduate medicinal chemistry course, 2) an active learning module co-developed by the TA and instructor, and 3) the unexpected opportunities for pharmacy educational outreach that resulted from this collaboration. EDUCATIONAL ACTIVITY AND SETTING: Medicinal Chemistry (CHM3413) is an undergraduate course offered each fall at Palm Beach Atlantic University (PBA). As a TA for CHM3413, a pharmacy student from the Gregory School of Pharmacy (GSOP) at PBA co-developed and implemented an active learning module emphasizing foundational medicinal chemistry concepts as they pertain to performance enhancing drugs (PEDs)...
November 2017: Currents in Pharmacy Teaching & Learning
https://www.readbyqxmd.com/read/29233177/influences-of-perfectionism-and-motivational-climate-on-attitudes-towards-doping-among-korean-national-athletes-a-cross-sectional-study
#4
Moonjung Bae, Jungjoong Yoon, Hyunyong Kang, Taegyu Kim
BACKGROUND: The motives for elite athletes to dope are related primarily to maintaining and improving their physical performance. Especially, elite athletes training to compete in the Olympics may feel unique situational pressure, which may in turn induce powerful motivation for doping and predict doping behavior. This study aimed to investigate possible factors associated with attitudes towards doping in Korean national athletes who competed in the Rio 2016 Olympic Games. METHODS: A total of 198 athletes (95 female, 103 male) completed the questionnaire, which covered demographic information, doping-related experiences, Performance Enhancement Attitude Scale (PEAS), Perfectionism in Sports Scale (PSS; coach's criticism, concern over mistakes, and personal standards), and Perceived Motivational Climate in Sport Questionnaire-2 (PMCSQ-2; ego-involving and task-involving climates)...
December 12, 2017: Substance Abuse Treatment, Prevention, and Policy
https://www.readbyqxmd.com/read/29212413/a-lower-extremity-strength-based-profile-of-ncaa-division-i-women-s-basketball-and-gymnastics-athletes-implications-for-knee-joint-injury-risk-assessment
#5
Brennan J Thompson, Curtis S Cazier, Eadric Bressel, Dennis G Dolny
This study aimed to provide a comprehensive strength-based physiological profile of women's NCAA Division I basketball and gymnastic athletes; and to make sport-specific comparisons for various strength characteristics of the knee flexor and extensor muscles. A focus on antagonist muscle balance (hamstrings-to-quadriceps ratios, H:Q) was used to elucidate vulnerabilities in these at-risk female athletes. Fourteen NCAA Division I women's basketball and 13 gymnastics athletes performed strength testing of the knee extensors and flexors...
December 7, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29210324/patterns-of-locomotor-regulation-during-the-pole-vault-approach-phase
#6
Laurie Needham, Timothy A Exell, Ian N Bezodis, Gareth Irwin
A successful approach phase is key to achieving high performances in the pole vault. The aim of this study was to explore the nature of locomotor control patterns during the pole vault approach phase. Fourteen well-trained athletes performed ten jumps which were recorded using 2D video sampling at 200 Hz and analysed. Key kinematics were reconstructed from camera data using a modified 2D-DLT. Patterns of regulation were determined from the standard deviation of footfall locations during the approach phase...
December 6, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29200094/characteristics-of-a-national-level-female-weightlifter-peaking-for-competition-a-case-study
#7
Caleb D Bazyler, Satoshi Mizuguchi, Michael C Zourdos, Kimitake Sato, Ashley A Kavanaugh, Brad H DeWeese, Kevin F Breuel, Michael H Stone
This study investigated physiological and performance changes of a national level 69kg female weightlifter following three competition phases over a 28-week training period. The athlete first trained for a regional championship (weeks 1-12), followed by a local competition (weeks 13-23) and the national championship (weeks 24-28). Body mass, vastus lateralis cross-sectional area, and unloaded and loaded squat jump performance were assessed weekly during each 4-week competition phase. Serum biomarkers, and dynamic mid-thigh pulls were assessed prior to and after each competition phase...
December 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29189930/periodization-theory-confronting-an-inconvenient-truth
#8
John Kiely
Periodization theory has, over the past seven decades, emerged as the preeminent training planning paradigm. The philosophical underpinnings of periodization theory can be traced back to the integration of diverse shaping influences, whereby coaching beliefs and traditions were blended with historically available scientific insights and contextualized against pervading social planning models. Since then, many dimensions of elite preparation have evolved significantly, as driven by a combination of coaching innovations and science-led advances in training theory, techniques, and technologies...
November 30, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29189587/the-effect-of-cold-14-%C3%A2-c-versus-ice-5%C3%A2-c-water-immersion-on-recovery-from-intermittent-running-exercise
#9
Daniel Anderson, James Nunn, Christopher J Tyler
The purpose was to compare 14°C (CWI14°C) and 5°C (CWI5°C) cold water immersion following intermittent running. On three occasions, nine male team-sport players undertook 12 min of CWI14°C, CWI5°C or non-immersed seated recovery (CON) following 45 min of intermittent running exercise. Maximal cycling performance and markers of recovery were measured before and in the 0 - 72 h after exercise. Peak power output (PPO) was immediately reduced following all interventions (d = 1.8). CWI5°C was more effective at restoring PPO than CWI14°C (d = 0...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29182457/a-comparison-of-the-isometric-mid-thigh-pull-and-isometric-squat-intraday-reliability-usefulness-and-the-magnitude-of-difference-between-tests
#10
Claire J Brady, Andrew J Harrison, Eamonn P Flanagan, G Gregory Haff, Thomas M Comyns
PURPOSE: This investigation examined the reliability and usefulness of the isometric mid-thigh pull (IMTP) and isometric squat (ISqT) performed at the same knee and hip angles. The scores produced in each test were compared to determine the magnitude of differences between tests. METHODS: Twenty six male and female athletes (23.6±4.3 y; 1.75±0.07 m; 68.8±9.7 kg) performed 2 maximal repetitions of the IMTP and ISqT following a specific warm up. RESULTS: Maximum force, absolute peak force (PF), relative PF, allometrically scaled PF, rate of force development (RFD) (0 - 200 and 0 - 250 ms) and impulse (0 - 300 ms) were deemed reliable (ICC ≥ 0...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29182434/reactive-strength-index-a-poor-indicator-of-reactive-strength
#11
Robin Healy, Ian Kenny, Drew Harrison
PURPOSE: The primary aim was to assess the relationships between reactive strength measures and associated kinematic and kinetic performance variables achieved during drop jumps. A secondary aim was to highlight issues with the use of reactive strength measures as performance indicators. METHODS: Twenty eight national and international level sprinters, consisting of fourteen men and women, participated in this cross-sectional analysis. Athletes performed drop jumps from a 0...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29182403/long-distance-triathletes-intentions-to-manipulate-energy-and-macronutrient-intake-over-a-training-macrocycle
#12
Hani Kopetschny, David Rowlands, David Popovich, Jasmine Thomson
This study explored the information sources long-distance triathletes used to inform their training and nutrition plans, and evaluated these plans over a training macrocycle. Seventy-four long-distance triathletes completed the online survey. Coaches were the most popular training information source (69%), whereas non-professional sources (internet 65%, other athletes 53%) were more popular than nutritionists (29%) for nutrition information. Attributes valued most in an information source were: source prior personal experience, individualised advice, breadth of knowledge, and credibility...
November 28, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29181257/shoulder-pain-in-competitive-teenage-swimmers-and-it-s-prevention-a-retrospective-epidemiological-cross-sectional-study-of-prevalence
#13
Monica Tessaro, Giorgio Granzotto, Antonio Poser, Giuseppe Plebani, Alex Rossi
Background: The term "swimmer's shoulder" was first introduced in 1974 by Kennedy and Hawkins to describe a common condition among competitive swimmers characterized by pain and dysfunction of the shoulder complex. Currently, the term does not define a specific clinical diagnosis and its etiology is considered to be multifactorial. In the literature shoulder pain prevalence varies according to the adopted definitions (from 3% to 91%); however, in the Italian environment there is no prevalence study regarding swimmer shoulder...
October 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29166832/conditioning-exercises-in-ski-jumping-biomechanical-relationship-of-squat-jumps-imitation-jumps-and-hill-jumps
#14
Silvio Lorenzetti, Fabian Ammann, Sabrina Windmüller, Ramona Häberle, Sören Müller, Micah Gross, Michael Plüss, Stefan Plüss, Berni Schödler, Klaus Hübner
As hill jumps are very time-consuming, ski jumping athletes often perform various imitation jumps during training. The performed jumps should be similar to hill jumps, but a direct comparison of the kinetic and kinematic parameters has not been performed yet. Therefore, this study aimed to correlate 11 common parameters during hill jumps (Oberstdorf Germany), squat jumps (wearing indoor shoes), and various imitation jumps (rolling 4°, rolling flat, static; jumping equipment or indoor shoes) on a custom-built instrumented vehicle with a catch by the coach...
November 22, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29162467/return-to-play-after-injuries-a-survey-on-the-helpfulness-of-various-forms-of-assistance-in-the-shared-decision-making-process-in-semi-professional-athletes-in-germany
#15
Daniel Niederer, Jan Wilke, Lutz Vogt, Winfried Banzer
OBJECTIVE: To assess how different decision-guiding factors, such as health and performance related actuators, as well as evidence based guidelines, support the process-orientated final positive return to play (RTP) decision of head coaches responsible for semi-professional sport teams. DESIGN: Cross-sectional survey. SETTING: and Participants: A survey consisting of questions on the importance of different decision-guiding factors used when making the RTP decision following injuries was administered to and completed by 238 head coaches of semi-professional players' teams...
November 18, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29160809/evaluation-of-dietary-intakes-and-supplement-use-in-paralympic-athletes
#16
Robyn F Madden, Jane Shearer, Jill A Parnell
Dietary intakes and supplement use in Paralympic athletes remains largely unexplored, and specialized recommendations are lacking. The aim of this study was to evaluate nutrient intakes and supplement use in high-performance athletes with physical disabilities using three-day food records and a validated dietary supplement use questionnaire. A secondary aim examined gender differences in nutrient and supplement intakes. Male (n = 18) and female (n = 22) athletes were recruited from nine Paralympic sports through sporting organizations, coaches, and social media...
November 21, 2017: Nutrients
https://www.readbyqxmd.com/read/29158621/loaded-and-unloaded-jump-performance-of-top-level-volleyball-players-from-different-age-categories
#17
Katia Kitamura, Lucas Adriano Pereira, Ronaldo Kobal, Cesar Cavinato Cal Abad, Ronaldo Finotti, Fábio Yuzo Nakamura, Irineu Loturco
The aim of this study was to investigate the differences in loaded and unloaded jump performances between different age categories of top-level volleyball players from the same club. Forty-three volleyball players were divided into four age groups: under-17, under-19, under-21 and professional. Vertical jumping height for squat jump (SJ), countermovement jump (CMJ) and CMJ with arm swing (CMJa) and mean propulsive velocity (MPV) in the loaded jump squat exercise with 40% of the athlete's body mass were compared among the different age categories, considering body mass as a covariate...
September 2017: Biology of Sport
https://www.readbyqxmd.com/read/29141506/triathlon-transition-study-quantifying-differences-in-running-movement-pattern-and-precision-after-bike-run-transition
#18
Christian Weich, Randall L Jensen, Manfred Vieten
Various publications discuss the discrepancies of running in triathlons and stand-alone runs. However, those methods, such as analysing step-characteristics or ground-contact time, lack the ability to quantitatively discriminate between subtle running differences. The attractor method can be applied to overcome those shortcomings. The purpose was to detect differences in athletes' running patterns (δM) and movement precision (δD) by comparing a 5,000 m run after a prior cycling session (TRun) with an isolated run over the same distance (IRun)...
November 15, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29140909/the-effects-of-load-on-peak-power-output-fatigue-during-the-bench-throw
#19
David Boffey, Bulent Sokmen, Kurt Sollanek, Wanda Boda, Steven Winter
The ability to create power is an important variable for athletic success. No study to date has compared peak power output (PPO) fatigue across multiple sets and with different loads with the bench throw. This study aimed to begin the process of establishing empirical upper body power training guidelines for moderately strong athletes by determining how load (30%, 45%, 60% 1RM) affects PPO (Watts) dropoff during 3 sets of 10 repetitions of the bench throw. 10 resistance-trained male volunteers ((mean ± SD): age 20...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29140180/the-role-of-lumbopelvic-hip-complex-stability-in-softball-throwing-mechanics
#20
Gabrielle G Gilmer, Jessica K Washington, Jeffrey Dugas, James Andrews, Gretchen D Oliver
CONTEXT: Studies have found that a 20% reduction in energy generation from the lumbopelvic-hip complex (LPHC) during overhead throws leads to a 34% increase in load on the shoulder. OBJECTIVE: The purpose of this study was to assess the effects of LPHC stability, via the single leg squat (SLS) assessment, on throwing mechanics of softball athletes. DESIGN: Prospective cohort study. SETTING: Laboratory setting. PARTICIPANTS: Fifty softball athletes (164...
November 15, 2017: Journal of Sport Rehabilitation
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