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https://www.readbyqxmd.com/read/27882632/rocking-the-boat-does-perfect-rowing-crew-synchronization-reduce-detrimental-boat-movements
#1
L S Cuijpers, P J M Passos, A Murgia, A Hoogerheide, K A P M Lemmink, H J de Poel
In crew rowing, crew members need to mutually synchronize their movements to achieve optimal crew performance. Intuitively, poor crew coordination is often deemed to involve additional boat movements such as surge velocity fluctuations, heave, pitch, and roll, which would imply lower efficiency (eg, due to increased hydrodynamic drag). The aim of this study was to investigate this alleged relation between crew coordination and boat movements at different stroke rates. Fifteen crews of two rowers rowed in a double scull (ie, a two-person boat) at 18, 22, 26, 30, and 34 strokes per minute...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27857520/secondary-elements-of-blood-ph-variation-can-influence-the-effort-effectiveness-based-on-adaptive-changes-within-a-group-of-elite-athletes
#2
Ştefan Adrian Martin, Valeriu Tomescu, Septimiu Voidăzan
AIM: pH is the direct indicator of the body reaction following the activities performed. Establishing precise correlations between pH and blood biochemical parameters might support the balancing of values during periods of marked physical activity. METHOD: We conducted a case study in a group of elite rowers. Twelve athletes were included in the study. Monitoring was carried out by collecting biological samples several times a day: in the morning, 80 minutes pre-workout, 12 hours after the last physical effort performed, at two different times, 10 days apart...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27786608/de-novo-methylation-in-male-germ-cells-of-the-common-marmoset-monkey-occurs-during-postnatal-development-and-is-maintained-in-vitro
#3
Daniel Langenstroth-Röwer, Jörg Gromoll, Joachim Wistuba, Ina Tröndle, Sandra Laurentino, Stefan Schlatt, Nina Neuhaus
The timing of de novo DNA methylation in male germ cells during human testicular development is yet unsolved. Apart from that, the stability of established imprinting patterns in vitro is controversially discussed. This study aimed at determining the timing of DNA de novo methylation and at assessing the stability of the methylation status in vitro. We employed the marmoset monkey (Callithrix jacchus) as it is considered the best non-human primate model for human testicular development. We selected neonatal, pre-pubertal, pubertal, and adult animals (n = 3, each) and assessed germ cell global DNA methylation levels by 5-methyl cytosine staining, and Alu elements and gene-specific methylation (H19, LIT1, SNRPN, MEST, OCT4, MAGE-A4, and DDX-4) by pyrosequencing...
October 27, 2016: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/27776001/central-factors-contribute-to-knee-extensor-strength-loss-after-2000-m-rowing-in-elite-male-and-female-rowers
#4
Florian Husmann, Martin Gube, Sabine Felser, Matthias Weippert, Anett Mau-Moeller, Sven Bruhn, Martin Behrens
PURPOSE: Despite growing interest in task-dependent alterations of central and peripheral fatigue following endurance exercise, little is known about the impact of rowing on quadriceps muscle fatigue. This study aimed to investigate central and peripheral mechanisms of fatigue following a 2000-m rowing time-trial. METHODS: Eight competitive rowers (4 males, 4 females, 20 ± 4 years) performed a 2000-m time-trial on an indoor rower and a control condition (sitting)...
October 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27736257/day-to-day-heart-rate-variability-hrv-recordings-in-world-champion-rowers-appreciating-unique-athlete-characteristics
#5
Daniel J Plews, Paul B Laursen, Martin Buchheit
PURPOSE: Heart rate variability (HRV) is a popular tool for monitoring autonomic nervous system status and training adaptation in athletes. It is believed that increases in HRV indicate effective training adaptation, but these are not always apparent in elite athletes. METHODS: Resting HRV was recorded in 4 elite rowers (Rower A, B, C and D) over the 7-week period prior to 2015 World Rowing Championship success. The natural logarithm of the square root of the mean sum of the squared differences between R-R intervals (Ln rMSSD), Ln rMSSD:R-R ratio trends, and the Ln rMSSD to R-R interval relationship were assessed for each champion-winning rower...
October 13, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27633491/the-1-500-m-rowing-performance-is-highly-dependent-on-modified-wingate-anaerobic-test-performance-in-national-level-adolescent-rowers
#6
Hugo Maciejewski, Abderrahmane Rahmani, Frédéric Chorin, Julien Lardy, Caroline Giroux, Sébastien Ratel
PURPOSE: The aim of the current study was to determine whether the anaerobic performance assessed by a modified Wingate test could account for the 1,500-m rowing ergometer performance in young competitive rowers. METHODS: Fourteen national-level adolescent rowers performed on a rowing ergometer i) a 30-s allout exercise (i.e., modified Wingate test) and ii) a 1,500-m all-out exercise (i.e., rowing performance). For each of these two exercises, the mean power output was considered as the main performance criterion (PWIN and P1500, respectively)...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27584239/4-weeks-of-plyometric-training-improves-rowing-performance-in-high-school-male-rowers-625-board-6-june-1-1-00-pm-3-00-pm
#7
Julian Egan-Shuttler, Rohan Edmonds, Cassandra Eddy, Veronica O'Neill, Stephen J Ives
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27582998/arthroscopic-release-and-labral-repair-for-bifocal-compression-of-the-suprascapular-nerve
#8
Ross R Radic, Andrew Wallace
We present a rare case of combined proximal and distal compression of the suprascapular nerve causing supra- and infraspinatus weakness and wasting in a 17-year-old rower. Clinical findings, magnetic resonance imaging and electromyeographic studies confirm this. The case was managed with an arthroscopic approach, consisting of arthroscopic labral repair and decompression of a paralabral cyst, combined with arthroscopic release of the transverse scapular ligament. An excellent result was achieved, with the patient returning to full competitive rowing prior to the 6-month clinical review...
January 2016: Shoulder & Elbow
https://www.readbyqxmd.com/read/27577685/rowing-injuries-an-updated-review
#9
Jane S Thornton, Anders Vinther, Fiona Wilson, Constance M Lebrun, Mike Wilkinson, Stephen R Di Ciacca, Karen Orlando, Tomislav Smoljanovic
Although traditionally seen as a sport for elite schools and colleges, rowing is a founding Olympic event and is increasingly enjoyed by people of all ages and abilities. The sport's rapidly changing demographics shows significant growth in masters (age 27 years and above) and para-rowing populations. It has further expanded beyond its traditional flatwater format to include the discipline of open-water or coastal rowing, and an increased focus on indoor rowing. Rowing-specific injury research has similarly increased over the last decade since our last review, revealing areas of improved understanding in pre-participation screening, training load, emerging concepts surrounding back and rib injury, and relative energy deficiency in sport...
August 30, 2016: Sports Medicine
https://www.readbyqxmd.com/read/27526873/intracellular-tenofovir-and-emtricitabine-anabolites-in-genital-rectal-and-blood-compartments-from-first-dose-to-steady-state
#10
Sharon M Seifert, Xinhui Chen, Amie L Meditz, Jose R Castillo-Mancilla, Edward M Gardner, Julie A Predhomme, Carolyn Clayton, Gregory Austin, Brent E Palmer, Jia-Hua Zheng, Brandon Klein, Becky J Kerr, L Anthony Guida, Caitlin Rower, Joseph E Rower, Jennifer J Kiser, Lane R Bushman, Samantha MaWhinney, Peter L Anderson
The pharmacokinetics (PK) of tenofovir-diphosphate (TFV-DP) and emtricitabine-triphosphate (FTC-TP), the active anabolites of tenofovir disoproxil fumarate (TDF), and emtricitabine (FTC) in blood, genital, and rectal compartments was determined in HIV-positive and seronegative adults who undertook a 60-day intensive PK study of daily TDF/FTC (plus efavirenz in HIV positives). Lymphocyte cell sorting, genital, and rectal sampling occurred once per subject, at staggered visits. Among 19 HIV-positive (3 female) and 21 seronegative (10 female) adults, TFV-DP in peripheral blood mononuclear cells (PBMC) accumulated 8...
October 2016: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/27479009/the-effect-of-aging-on-relationships-between-lean-body-mass-and-vo2max-in-rowers
#11
Chul-Ho Kim, Courtney M Wheatley, Mehrdad Behnia, Bruce D Johnson
Aging is associated with a fall in maximal aerobic capacity as well as with a decline in lean body mass. The purpose of the study was to investigate the influence of aging on the relationship between aerobic capacity and lean body mass in subjects that chronically train both their upper and lower bodies. Eleven older rowers (58±5 yrs) and 11 younger rowers (27±4 yrs) participated in the study. Prior to the VO2max testing, subjects underwent a dual energy X-ray absorptiometry scan to estimate total lean body mass...
2016: PloS One
https://www.readbyqxmd.com/read/27452405/high-throughput-crystallography-reliable-and-efficient-identification-of-fragment-hits
#12
Johannes Schiebel, Stefan G Krimmer, Karine Röwer, Anna Knörlein, Xiaojie Wang, Ah Young Park, Martin Stieler, Frederik R Ehrmann, Kan Fu, Nedyalka Radeva, Michael Krug, Franziska U Huschmann, Steffen Glöckner, Manfred S Weiss, Uwe Mueller, Gerhard Klebe, Andreas Heine
Today the identification of lead structures for drug development often starts from small fragment-like molecules raising the chances to find compounds that successfully pass clinical trials. At the heart of the screening for fragments binding to a specific target, crystallography delivers structural information essential for subsequent drug design. While it is common to search for bound ligands in electron densities calculated directly after an initial refinement cycle, we raise the important question whether this strategy is viable for fragments characterized by low affinities...
August 2, 2016: Structure
https://www.readbyqxmd.com/read/27438378/hiit-enhances-endurance-performance-and-aerobic-characteristics-more-than-high-volume-training-in-trained-rowers
#13
Niamh J Ní Chéilleachair, Andrew J Harrison, Giles D Warrington
This study compared the effects of long slow distance training (LSD) with high-intensity interval training (HIIT) in rowers. Nineteen well-trained rowers performed three tests before and after an 8-week training intervention: (1) 2000 m time trial; (2) seven-stage incremental step test to determine maximum oxygen uptake ([Formula: see text]O2max), power output at [Formula: see text]O2max (W[Formula: see text]O2max), peak power output (PPO), rowing economy and blood lactate indices and (3) seven-stroke power-output test to determine maximal power output (Wmax) and force (Fmax)...
July 20, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27399822/nutrition-and-supplements-for-elite-open-weight-rowing
#14
Susan Boegman, Christine E Dziedzic
Competitive rowing events are raced over 2,000 m requiring athletes to have highly developed aerobic and anaerobic systems. Elite rowers therefore undertake training sessions focused on lactate tolerance, strength and power as well as aerobic and anaerobic capacity development, that can amount to a 24-h training week. The training stimuli and consequent metabolic demands of each session in a rowing training program differ depending on type, length, and intensity. Nutrition guidelines for endurance- and power-based sports should be drawn upon; however, individualized and flexible nutrition plans are critical to successfully meet the daily, weekly, and cyclic nutrient requirements of a rower...
July 2016: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/27375499/muscle-mct4-content-is-correlated-with-the-lactate-removal-ability-during-recovery-following-all-out-supramaximal-exercise-in-highly-trained-rowers
#15
Hugo Maciejewski, Muriel Bourdin, Léonard Féasson, Hervé Dubouchaud, Christian Denis, Hubert Freund, Laurent A Messonnier
The purpose of this study was to test if the lactate exchange (γ1) and removal (γ2) abilities during recovery following short all-out supramaximal exercise correlate with the muscle content of MCT1 and MCT4, the two isoforms of the monocarboxylate transporters family involved in lactate and H(+) co-transport in skeletal muscle. Eighteen lightweight rowers completed a 3-min all-out exercise on rowing ergometer. Blood lactate samples were collected during the subsequent passive recovery to assess an individual blood lactate curve (IBLC)...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27361876/lightheadedness-in-a-collegiate-rower-3406-june-3-3-15-pm-3-35-pm
#16
Amy Kreykes, Amy Miller
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27361744/elderly-rowers-have-favorable-metabolic-profiles-regardless-of-genetic-predisposition-3175-board-240-june-3-3-30-pm-5-00-pm
#17
Mitsuru Higuchi, Kumpei Tanisawa, Xiaomin Sun, Tomoko Ito, Ryoko Kawakami, Shizuo Sakamoto
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27360653/heart-matters-a-rower-flourishes-after-her-career-impacting-cardiac-diagnosis-1828-june-2-1-00-pm-1-20-pm
#18
Sharon A Chirban, Aaron Baggish
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27360643/the-effect-of-hiit-on-blood-lactate-indices-and-performance-in-well-trained-male-rowers-1818-june-2-1-15-pm-1-30-pm
#19
Niamh J Ní Chéilleachair, Andrew J Harrison, Giles D Warrington
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27360383/profiling-kynurenine-kyn-as-a-potential-immunological-marker-for-overtraining-syndrome-ots-in-elite-rowers-1464-board-117-june-2-8-00-am-9-30-am
#20
Uwe Schumann, Martina Zügel, Gunnar Treff, Marion Schneider, Dietmar Abendroth, Jürgen M Steinacker
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
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