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https://www.readbyqxmd.com/read/29019867/the-effects-of-various-weighted-implements-on-baseball-swing-kinematics-in-collegiate-baseball-players
#1
Charles C Williams, Jacob R Gdovin, Samuel J Wilson, Vanessa L Cazas-Moreno, John D Eason, Elizabeth L Hoke, Charles R Allen, Chip Wade, John C Garner
The purpose of this study was to investigate the effects of different warm-up (WU) devices on bat swing parameters including maximal resultant velocity (MRV), resultant velocity at ball contact (RVBC), time difference between MRV and RVBC, bat angle at MRV, bat angle at RVBC, and perceptual differences (PD) of each WU implement utilized by National Collegiate Athletic Association (NCAA) Division-I baseball players. Fifteen varsity baseball players completed one experimental session during fall training. Retro-reflective markers were placed on the bat and tee to measure basic bat kinematics during the swing...
June 3, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29016485/a-medically-supervised-pregnancy-exercise-intervention-in-obese-women-a-randomized-controlled-trial
#2
Niamh Daly, Maria Farren, Aoife McKeating, Ruth OʼKelly, Mary Stapleton, Michael J Turner
OBJECTIVE: To evaluate whether an intensive, medically supervised exercise intervention improved maternal glycemia and gestational weight gain in obese pregnant women when compared with routine prenatal care. METHODS: This randomized controlled trial compared a medically supervised exercise intervention with routine prenatal care. The primary outcome was a reduction in mean maternal fasting plasma glucose in the intervention group by 6.9 mg/dL at the time of a 75-g oral glucose tolerance test at 24-28 weeks of gestation...
October 6, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28985697/characterization-of-prepractice-injury-prevention-exercises-of-high-school-athletic-teams
#3
James R Slauterbeck, Autumn Reilly, Pamela M Vacek, Rebecca Choquette, Timothy W Tourville, Bert Mandelbaum, Robert J Johnson, Bruce D Beynnon
BACKGROUND: Static and dynamic exercises are performed before activity to decrease injury risk and increase performance. Although evidence supports using dynamic over static stretching and performing Fédération Internationale de Football Association (FIFA) 11+ as a dynamic prepractice routine, we do not know the frequency at which these exercises are utilized in high school populations. HYPOTHESIS: We hypothesize that there is a wide variety of preparticipation exercises performed by high school athletes, and that few high school teams perform FIFA 11+ as an injury prevention program in its entirety...
October 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28983841/evidence-based-concepts-for-prevention-of-knee-and-acl-injuries-2017-guidelines-of-the-ligament-committee-of-the-german-knee-society-dkg
#4
Julian Mehl, Theresa Diermeier, Elmar Herbst, Andreas B Imhoff, Thomas Stoffels, Thore Zantop, Wolf Petersen, Andrea Achtnich
INTRODUCTION: Knee injuries and especially anterior cruciate ligament (ACL) tears are frequent in athletes. Therefore, primary and secondary prevention of sports-related lower limb injuries is an ongoing topic of interest. The aim of present study was to establish guidelines for the prevention of knee and ACL injuries on the basis of evidence-based concepts represented in current literature. METHODS: A comprehensive literature review regarding prevention programs for knee and ACL injuries was conducted...
October 5, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28977556/programming-sites-of-meiotic-crossovers-using-spo11-fusion-proteins
#5
Roberta Sarno, Yoan Vicq, Norio Uematsu, Marine Luka, Clement Lapierre, Dana Carroll, Giacomo Bastianelli, Alexandre Serero, Alain Nicolas
Meiotic recombination shapes the genetic diversity transmitted upon sexual reproduction. However, its non-random distribution along the chromosomes constrains the landscape of potential genetic combinations. For a variety of purposes, it is desirable to expand the natural repertoire by changing the distribution of crossovers in a wide range of eukaryotes. Toward this end, we report the local stimulation of meiotic recombination at a number of chromosomal sites by tethering the natural Spo11 protein to various DNA-binding modules: full-length DNA binding proteins, zinc fingers (ZFs), transcription activator-like effector (TALE) modules, and the CRISPR-Cas9 system...
August 24, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28973780/diversity-among-elephant-grass-genotypes-using-bayesian-multi-trait-model
#6
D A Rossi, R F Daher, T C Barbé, R S N Lima, A F Costa, L P Ribeiro, P E Teodoro, L L Bhering
Elephant grass is a perennial tropical grass with great potential for energy generation from biomass. The objective of this study was to estimate the genetic diversity among elephant grass accessions based on morpho-agronomic and biomass quality traits and to identify promising genotypes for obtaining hybrids with high energetic biomass production capacity. The experiment was installed at experimental area of the State Agricultural College Antônio Sarlo, in Campos dos Goytacazes. Fifty-two elephant grass genotypes were evaluated in a randomized block design with two replicates...
September 27, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28971855/cluster-randomised-control-trial-for-cricket-injury-prevention-programme-cipp-a-protocol-paper
#7
Najeebullah Soomro, Nina Chua, Jonathan Freeston, Rene E D Ferdinands, Ross Sanders
BACKGROUND: Injury prevention programmes (IPPs) are effective in reducing injuries among adolescent team sports. However, there is no validated cricket-specific IPP despite the high incidence of musculoskeletal injuries among amateur cricketers. OBJECTIVES: To evaluate whether a cricket injury prevention programme (CIPP) as a pretraining warm-up or post-training cool-down can reduce injury rates in amateur cricket players. METHODS: CIPP is a cluster randomised controlled trial which includes 36 male amateur club teams having cricket players aged 14-40 years to be randomly assigned to three study arms: warm-up, cool-down and control (n=12 teams, 136 players in each arm)...
September 28, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28966711/recovery-in-level-7-10-women-s-usa-artistic-gymnastics
#8
Stephen B Buckner, Nicholas T Bacon, Phillip A Bishop
This study assessed physical performance in women's artistic gymnastics following three variable recovery periods. Participants included fifteen female gymnasts (mean age = 13.5 ± 1.1) who had competed at USA Gymnastics (USAG) levels 7 - 10 within at least one year prior to the study. Each testing session consisted of a warm-up followed by four muscular endurance tests and one explosive maximal test. Assessments included pull-ups, leg lifts, handstand push-ups, vertical jump, and push-ups. After the performance assessments, the participants completed a typical practice session...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28952852/effects-of-self-myofascial-release-on-shoulder-function-and-perception-in-adolescent-tennis-players
#9
Julien Le Gal, Mickael Begon, Benoit Gillet, Isabelle Rogowski
CONTEXT: Tennis induces a decreased internal rotation range of motion at the dominant glenohumeral joint. The effects of self-myofascial release have not yet been investigated to restore glenohumeral range of motion. OBJECTIVE: This study aimed at investigating the effects of self-myofascial release on the shoulder function and perception in adolescent tennis players. DESIGN: Test-retest design. SETTING: Tennis training sport facilities...
September 27, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28952840/quantifying-cricket-fast-bowling-skill
#10
Simon A Feros, Warren B Young, Brendan J O'Brien
OBJECTIVES: To evaluate the current evidence regarding the quantification of cricket fast bowling skill. METHODS: Studies that assessed fast bowling skill (bowling speed and accuracy) were identified from searches in SPORTDiscus (EBSCO) in June 2017. The reference lists of identified papers were also examined for relevant investigations. RESULTS: Sixteen papers matched the inclusion criteria, and discrepancies in assessment procedures were evident...
September 27, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28952310/dicarboxylic-acid-emissions-from-aftertreatment-equipped-diesel-engines
#11
Noah Bock, Marc Michael Baum, Mackenzie Anderson, Anais Pesta, William F Northrop
Dicarboxylic acids play a key role in atmospheric particle nucleation. Though long assumed to originate from primary sources, little experimental evidence exists directly linking combustion to their emissions. In this work, we sought definitive proof that dicarboxylic acids are produced in diesel engines and that they can slip through a modern aftertreatment system (ATS) at low exhaust temperatures. One difficulty in measuring dicarboxylic acid emissions is that they cannot be identified using conventional mass spectroscopy techniques...
September 27, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28944269/sports-and-environmental-temperature-from-warming-up-to-heating-up
#12
REVIEW
Sébastien Racinais, Scott Cocking, Julien D Périard
Most professional and recreational athletes perform pre-conditioning exercises, often collectively termed a 'warm-up' to prepare for a competitive task. The main objective of warming-up is to induce both temperature and non-temperature related responses to optimize performance. These responses include increasing muscle temperature, initiating metabolic and circulatory adjustments, and preparing psychologically for the upcoming task. However, warming-up in hot and/or humid ambient conditions increases thermal and circulatory strain...
2017: Temperature: Multidisciplinary Biomedical Journal
https://www.readbyqxmd.com/read/28940734/warming-up-to-the-idea-of-wet-wraps
#13
Chelsea A Cooper, Cynthia M C DeKlotz
Atopic dermatitis (AD) is a prevalent condition in the pediatric population that can have a significant effect on a child's quality of life. Management is multifactorial, involving topical pharmacotherapy, emollients, and a bathing regimen in conjunction with close supervision from the caregiver and physician. In the case of moderate to severe or refractory AD, wet wraps can be used. As part of our wet wrap regimen, we propose warming damp cotton pajamas in the dryer before application. This makes the wet wraps more comfortable for children, increasing adherence to the prescribed regimen...
September 21, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28930881/comparing-the-immediate-effects-of-a-total-motion-release-warm-up-and-a-dynamic-warm-up-protocol-on-the-dominant-shoulder-in-baseball-athletes
#14
Stephen C Gamma, Russell Baker, Alan Nasypany, James May, Jeff G Seegmiller, Steven M Iorio
PURPOSE: A decrease in total range of motion (ROM) of the dominant shoulder may predispose baseball athletes to increased shoulder injury risk; the most effective technique for improving ROM is unknown. The purpose of this study was to compare the immediate effects of Total Motion Release® (TMR) to a generic dynamic warm-up program in baseball athletes. METHODS: Baseball athletes (n=20) were randomly assigned to an intervention group: TMR® group (TMRG; n=10) or traditional warm-up group (TWG; n=10)...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28929343/a-comparison-of-isomaltulose-versus-maltodextrin-ingestion-during-soccer-specific-exercise
#15
Emma J Stevenson, Anthony Watson, Stephan Theis, Anja Holz, Liam D Harper, Mark Russell
PURPOSE: The performance and physiological effects of isomaltulose and maltodextrin consumed intermittently during prolonged soccer-specific exercise were investigated. METHODS: University soccer players (n = 22) performed 120 min of intermittent exercise while consuming 8% carbohydrate-electrolyte drinks (equivalent to ~ 20 g h(-1)) containing maltodextrin (Glycaemic Index: 90-100), isomaltulose (Glycaemic Index: 32) or a carbohydrate-energy-free placebo in a manner replicating the practices of soccer players (i...
November 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28928427/warming-up-human-body-by-nanoporous-metallized-polyethylene-textile
#16
Lili Cai, Alex Y Song, Peilin Wu, Po-Chun Hsu, Yucan Peng, Jun Chen, Chong Liu, Peter B Catrysse, Yayuan Liu, Ankun Yang, Chenxing Zhou, Chenyu Zhou, Shanhui Fan, Yi Cui
Space heating accounts for the largest energy end-use of buildings that imposes significant burden on the society. The energy wasted for heating the empty space of the entire building can be saved by passively heating the immediate environment around the human body. Here, we demonstrate a nanophotonic structure textile with tailored infrared (IR) property for passive personal heating using nanoporous metallized polyethylene. By constructing an IR-reflective layer on an IR-transparent layer with embedded nanopores, the nanoporous metallized polyethylene textile achieves a minimal IR emissivity (10...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28902116/adding-whole-body-vibration-to-preconditioning-squat-exercise-increases-cycling-sprint-performance
#17
Sébastien Duc, Bent R Rønnestad, William Bertucci
This study investigated the effect of performing a preconditioning exercise with or without whole-body vibration (WBV) on a subsequent cycling sprint performance. Fourteen trained subjects performed two separate test sessions in randomized order. After a warm-up, the preconditioning exercise (body-loaded half squats) was applied: 30-seconds of half-squats with WBV (40 Hz, 2 mm) or 30-seconds of half-squats without WBV with a 10-second all-out sprint performed after one minute. Surface electromyography (EMG) was measured from the vastus medialis, vastus lateralis and gastrocnemius medialis during the sprints...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28888207/acute-changes-of-hip-joint-range-of-motion-using-selected-clinical-stretching-procedures-a-randomized-crossover-study
#18
Adam M Hammer, Roger L Hammer, Karen V Lomond, Paul O'Connor
BACKGROUND: Hip adductor flexibility and strength is an important component of athletic performance and many activities of daily living. Little research has been done on the acute effects of a single session of stretching on hip abduction range of motion (ROM). OBJECTIVES: The aim of this study was to compare 3 clinical stretching procedures against passive static stretching and control on ROM and peak isometric maximal voluntary contraction (MVC). DESIGN: Using a randomized crossover study design, a total of 40 participants (20 male and 20 female) who had reduced hip adductor muscle length attended a familiarization session and 5 testing sessions on non-consecutive days...
September 1, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28885961/effectiveness-of-ice-sheet-cooling-following-exertional-hyperthermia
#19
Cory L Butts, Debora L Spisla, J D Adams, Cody R Smith, Kathleen M Paulsen, Aaron R Caldwell, Matthew S Ganio, Brendon P McDermott
BACKGROUND: The procedure of wrapping a heat casualty in ice-water soaked bed sheets to reduce core temperature has received little investigation, despite the practice and recommendation for its use in some military settings. Thus, the purpose of this study was to investigate the cooling efficacy of ice-sheet cooling (ISC) following exertional hyperthermia. METHODS: 13 (11 males, 2 females) participants (age = 23 ± 3 years, height = 176.5 ± 10.3 cm, mass = 78...
September 2017: Military Medicine
https://www.readbyqxmd.com/read/28878482/effects-of-high-intensity-aerobic-exercise-on-treadmill-on-maximum-expiratory-lung-capacity-of-elderly-women
#20
Joonsung Park, Dongwook Han
[Purpose] The aim of this study was to examine whether a systematic high intensity aerobic exercise on treadmill was effective in improving pulmonary function. [Subjects and Methods] The subjects of this study were 22 healthy elderly women over 65 years of age who were attending the Senior Welfare Center and Social Welfare Center programs in B city. For the pulmonary function test, a spirometry (Pony FX, COSMED Inc., Italy) was used. The item for measurement of pulmonary function in elderly women was maximum-effort expiratory spirogram (MES)...
August 2017: Journal of Physical Therapy Science
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