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https://www.readbyqxmd.com/read/28713470/differences-in-anthropometry-biological-age-and-physical-fitness-between-young-elite-kayakers-and-canoeists
#1
Daniel López-Plaza, Fernando Alacid, José María Muyor, Pedro Ángel López-Miñarro
The aim of this study was to determine the anthropometric and physical characteristics of youth elite paddlers and to identify the differences between kayakers and canoeists. A total of 171 male paddlers (eighty-nine kayakers and eighty-two canoeists), aged 13.69 ± 0.57 years (mean ± SD) volunteered to participate in this study. The participants completed basic anthropometric assessments (body mass, stretch stature, sitting height, body mass index, maturity level, sum of 6 skinfolds and fat mass percentage) as well as a battery of physical fitness tests (overhead medicine ball throw, counter movement jump, sit-and-reach and 20 m multi-stage shuttle run tests)...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28708704/shoulder-injuries-in-canoeing-and-kayaking
#2
Philip Holland, Emma Torrance, Lennard Funk
OBJECTIVE: We report the largest case series of shoulder injuries among paddlers so far to establish common mechanisms and patterns of injury. We also discuss how these injuries were managed and report the proportion of paddlers that return to paddlesport. DESIGN: Case series. SETTING: Upper Limb Unit, Wrightington Hospital, United Kingdom. Manchester Arm Clinic, United Kingdom. PATIENTS: Fifty-seven shoulder injuries to professional and recreational paddlers were reviewed at a mean follow-up time of 55 months from the first consultation...
July 11, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28654439/unusual-cause-of-thoracic-wall-pain-in-a-kayaker-a-case-report
#3
Guy Morgan Evans, Gurjit Bhogal
Chest wall injuries are common in paddle-based sports such as kayaking. We present the case of a 46-year-old amateur kayaker who presented with signs and symptoms in keeping with a rib stress response or fracture. The patient failed to respond to conservative management and subsequent imaging revealed an obstructed left kidney with associated hydronephrosis. This case report highlights the importance of considering the wider differential diagnoses when managing athletes participating in paddle-based sports, especially when symptoms fail to settle with appropriate conservative management...
June 22, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28488832/road-to-the-olympics-physical-fitness-of-medalists-of-the-canoe-sprint-junior-european-and-world-championship-events-over-the-past-20-years
#4
Viktor Bielik, Leonard Lendvorský, Lukáš Lengvarský, Peter Lopata, Róbert Petriska, Jana Pelikánová
BACKGROUND: In this article we aimed to find out whether there is a difference in physiological, anthropometric and power variables between medalists in junior international Championship events (MJCH) and the remaining members of the national team (NT) in flat water canoe sprint. METHODS: Sixty male junior kayakers from Slovak NT were tested annually between years 1995 and 2016. Sixteen of them won at least one medal (gold, silver or bronze) at junior international Championship...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28480686/variation-in-plasma-cytokine-concentration-during-a-training-season-in-elite-kayakers
#5
Grasiely Faccin Borges, Luis Rama, Humberto Moreira Carvalho, Joana Gaspar, Amandio Santos, Alain Massart, Beatriz Gomes, Luciele Guerra Minuzzi, Artur Paiva, Ana M Teixeira
BACKGROUND: The purpose of this study was to investigate the differences in cytokines levels in the peripheral blood of kayakers at different moments of training. MATERIALS AND METHODS: The sample comprised 12 elite kayakers preparing for the Beijing Olympic Games. Blood samples were collected at different time points of the training season: baseline (t0 - November) after six week of off-training and before the start of the training season; t1 (January) at week 11 after a period of high-volume training; t2 (April) at week 26 at the end of a period of high intensity training sessions; t3 (June) at week 31 after a competitive period...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28338361/method-induced-differences-of-energy-contributions-in-adolescent-female-kayaking
#6
Yongming Li, Margot Niessen, Xiaoping Chen, Ulrich Hartmann
Purpose Different relative aerobic energy contribution (WAER%) has been reported for the two female Olympic kayaking disciplines (i.e. 200 and 500m). The purpose of this study was to investigate whether the adopted method of energy calculation influenced the value of WAER% during the kayaking time trials. Methods Eleven adolescent female kayakers (age 14±1 yrs, height 172±4 cm, body mass 65.4±4.2 kg, VO2peak 42.6±4.9 ml·min(-1)·kg(-1), training experience 1.5±0.3 yrs) volunteered to participate in one incremental exercise test and two time trials (40s and 120s) on the kayak ergometer...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28247725/-prevalence-of-various-urination-disorders-in-residents-of-the-republic-of-dagestan
#7
Yu B Kazilov, Z K Gadzhieva, T M Mugutdinov, B R Kazilov
PURPOSE: to evaluate the prevalence of various urination disorders in residents of the Republic of Dagestan, and, thus, to improve their diagnosis and treatment. MATERIALS AND METHODS: 584 residents (264 men and 320 women) from different regions of the Republic of Dagestan took part in an anonymous questionnaire survey: 165 residents of Makhachkala, including 92 men and 73 women; 86 residents of Derbent and villages of Southern Dagestan, including 30 men and 56 women; 73 residents of Khasavyurt and Kizilyurt, including 34 men and 39 women; 53 residents of Buynaksk, including 19 men and 34 women; 42 residents of Izberbash, including 19 men and 23 women; 58 residents of the Kaspiysk, 29 men and 29 women; 42 residents of Kayakent, 4 men and 38 women; 65 residents of other regions of the Republic of Dagestan (Karabudakhkent, Gumbet, Gunibsk, Shamil, Khunzakh, Botlikh, Kazbek, Levashin, Tlyaratin, and Tsumadin regions), 37 men and 28 women...
August 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28229134/magnetic-microkayaks-propulsion-of-microrods-precessing-near-a-surface-by-kilohertz-frequency-rotating-magnetic-fields
#8
L O Mair, B A Evans, A Nacev, P Y Stepanov, R Hilaman, S Chowdhury, S Jafari, W Wang, B Shapiro, I N Weinberg
Surface-swimming nano- and micromotors hold significant potential for on-chip mixing, flow generation, sample manipulation, and microrobotics. Here we describe rotating microrods magnetized nearly orthogonally to their long axes. When actuated near a solid surface, these microrods demonstrate precessing motion, with rods describing a double cone similar to the motion of a kayaker's paddle. The precessing motion induces translation. At 1 kHz, these "microkayaks" move at translational velocities of ≈14 μm s(-1) and generate advective flows up to 10 μm s(-1)...
February 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28182506/accuracy-and-validity-of-commercially-available-kayak-ergometers
#9
Thiago Oliveira Borges, Nicola Bullock, David Aitken, Aaron J Coutts
This study compared three commercially available ergometers for within- and between- brand difference to a first principles calibration rig. All ergometers underestimated true mean power with errors of 27.6 ± 3.7%, 4.5 ± 3.5% and 22.5 ± 1.9% for the KayakPro(®), WEBA and Dansprint. Within-brand ergometer power differences ranged from 17 ± 9 to 22 ± 11 W for the KayakPro(®); 3 ± 4 to 4 ±4 W for the WEBA and 5 ± 3 to 5 ± 4 W for the Dansprint. The linear regression analysis showed that most kayak ergometers possess a stable CV (0...
February 9, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28062303/purification-and-characterization-of-bioactive-peptides-ryamide-and-cchamide-in-the-kuruma-shrimp-marsupenaeus-japonicus
#10
Tohru Mekata, Tomoya Kono, Jun Satoh, Morikatsu Yoshida, Kenji Mori, Takahiro Sato, Mikiya Miyazato, Takanori Ida
To understand the regulation systems of appetite, bioactive peptides from the kuruma shrimp Marsupenaeus japonicus (Mj) were isolated and purified by reverse pharmacological assays using CHO cells expressing the Drosophila melanogaster G-protein-coupled receptors (GPCRs) CG5811 (a RYamide receptor) or CG14593 (a CCHamide-2 receptor). Four peptides having binding activity to GPCRs were obtained and named Mj RYamide-1, Mj RYamide-2, Mj RYamide-3, and Mj CCHamide. Genes encoding the prepropeptides of these peptides were identified using kuruma shrimp transcriptome databases...
May 15, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27918656/aerobic-evaluation-in-elite-slalom-kayakers-using-tethered-canoe-system-a-new-proposal
#11
Homero Gustavo Ferrari, Leonardo H D Messias, Ivan G M Reis, Claudio A Gobatto, Filipe A B Sousa, Camila C S Serra, Fúlvia B Manchado-Gobatto
BACKGROUND: Among other aspects, aerobic fitness is indispensable for performance in slalom canoe. PURPOSE: The aims of the study were to propose the maximal lactate steady state (MLSS) and critical force (CF) tests using a tethered canoe system as new strategies for aerobic evaluation in elite slalom kayakers. Also, we studied the relationship between the aerobic parameters from these tests and the kayakers' performances. METHODS: Twelve male elite slalom kayakers from the Brazilian National Team participated in this study...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27913635/screening-and-analysis-of-janelia-flylight-project-enhancer-gal4-strains-identifies-multiple-gene-enhancers-active-during-hematopoiesis-in-normal-and-wasp-challenged-drosophila-larvae
#12
Tsuyoshi Tokusumi, Yumiko Tokusumi, Mark S Brahier, Victoria Lam, Jessica R Stoller-Conrad, Paul T Kroeger, Robert A Schulz
A GFP expression screen has been conducted on >1000 Janelia FlyLight Project enhancer-Gal4 lines to identify transcriptional enhancers active in the larval hematopoietic system. A total of 190 enhancers associated with 87 distinct genes showed activity in cells of the third instar larval lymph gland and hemolymph. That is, gene enhancers were active in cells of the lymph gland posterior signaling center (PSC), medullary zone (MZ), and/or cortical zone (CZ), while certain of the transcriptional control regions were active in circulating hemocytes...
February 9, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/27545614/crocodile-inspired-dome-shaped-pressure-receptors-for-passive-hydrodynamic-sensing
#13
Elgar Kanhere, Nan Wang, Ajay Giri Prakash Kottapalli, Mohsen Asadnia, Vignesh Subramaniam, Jianmin Miao, Michael Triantafyllou
Passive mechanosensing is an energy-efficient and effective recourse for autonomous underwater vehicles (AUVs) for perceiving their surroundings. The passive sensory organs of aquatic animals have provided inspiration to biomimetic researchers for developing underwater passive sensing systems for AUVs. This work is inspired by the 'integumentary sensory organs' (ISOs) which are dispersed on the skin of crocodiles and are equipped with slowly adapting (SA) and rapidly adapting (RA) receptors. ISOs assist crocodiles in locating the origin of a disturbance, both on the water surface and under water, thereby enabling them to hunt prey even in a dark environment and turbid waters...
2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/27529969/-a-case-of-leptospirosis-in-which-the-causative-pathogen-was-detected-using-cerebrospinal-fluid-pcr-eight-days-after-onset
#14
Yuki Arita, Toshihiro Tono, Tomohiro Hosoda, Hiroaki Taguchi, Mitsuo Sakamoto, Yasuo Osone, Hiroyuki Nozaki
We report a patient with leptospirosis caused by infection with Leptospira interrogans serovar Rachmati. A 30-year-old Japanese man took part in a survival camp on Iriomote Island, Okinawa, from July 9 to July 15, 2014. During the camp, he swam in the river and kayaked. He developed a high fever and fatigue 7 days after completing his trip and was admitted to our hospital on July 22. On admission, he complained of a posterior cervical pain and a loss of appetite. Laboratory findings revealed granulocytosis, mildly elevated AST and ALT levels, elevated BUN and Cr levels, and a significantly elevated CRP level...
May 2016: Kansenshōgaku Zasshi. the Journal of the Japanese Association for Infectious Diseases
https://www.readbyqxmd.com/read/27459727/estimated-costs-of-sporadic-gastrointestinal-illness-associated-with-surface-water-recreation-a-combined-analysis-of-data-from-neear-and-cheers-studies
#15
Stephanie DeFlorio-Barker, Timothy J Wade, Rachael M Jones, Lee S Friedman, Coady Wing, Samuel Dorevitch
BACKGROUND: The burden of illness can be described by addressing both incidence and illness severity attributable to water recreation. Monetized as cost, attributable disease burden estimates can be useful for environmental management decisions. OBJECTIVES: We characterize the disease burden attributable to water recreation using data from two cohort studies using a cost of illness (COI) approach and estimate the largest drivers of the disease burden of water recreation...
February 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/27433884/sprint-kayaking-and-canoeing-performance-prediction-based-on-the-relationship-between-maturity-status-anthropometry-and-physical-fitness-in-young-elite-paddlers
#16
Daniel López-Plaza, Fernando Alacid, José María Muyor, Pedro Ángel López-Miñarro
This study aimed to identify the maturity-related differences and its influence on the physical fitness, morphological and performance characteristics of young elite paddlers. In total, 89 kayakers and 82 canoeists, aged 13.69 ± 0.57 years (mean ± s), were allocated in three groups depending on their age relative to the age at peak height velocity (pre-APHV, circum-APHV and post-APHV) and discipline (kayak and canoe). Nine anthropometric variables, a battery of four physical fitness tests (overhead medicine ball throw, countermovement jump, sit-and-reach test and 20 m multistage shuttle run test) and three specific performance tests (1000, 500 and 200 m) were assessed...
June 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27395448/sports-related-testing-protocols-are-required-to-reveal-trunk-stability-adaptations-in-high-level-athletes
#17
David Barbado, Luis C Barbado, Jose L L Elvira, Jaap H van Dieën, Francisco J Vera-Garcia
Trunk/core stability is considered a key component of training programs, because it could contribute to prevention of low-back and lower-limb injuries and to sports performance. Based on the specificity principle, sports-related trunk stability tests would be required in elite sports performance. However, there may be some generic qualities underlying trunk stability that can be assessed with nonspecific protocols, which are broadly used in sport and rehabilitation. To assess whether specific tests are needed in a high-performance context, we analyzed the influence of specialization in sports with large but qualitatively different balance control demands (judo and kayaking) on trunk stability and compared high-performance athletes with recreational athletes without a specific training history...
September 2016: Gait & Posture
https://www.readbyqxmd.com/read/27274102/expression-of-scgb1c1-gene-as-a-potential-marker-of-susceptibility-to-upper-respiratory-tract-infections-in-elite-athletes-a-pilot-study
#18
J Orysiak, J Malczewska-Lenczowska, M Bik-Multanowski
High levels of exercise in athletes result in temporary immunosuppression, which could increase the susceptibility to upper respiratory tract infections. Understanding of immunological mechanisms responsible for this phenomenon could enable optimization of training schemes for elite athletes and avoidance of infection-related episodes of absence during sports championships. The aim of this study was to detect genes that may be responsible for modulation of individual susceptibility to infections. The blood and saliva samples were collected from 10 healthy, medically examined kayakers (4 females and 6 males) aged 24...
June 2016: Biology of Sport
https://www.readbyqxmd.com/read/27271053/detailed-heart-rate-variability-analysis-in-athletes
#19
Orsolya Kiss, Nóra Sydó, Péter Vargha, Hajnalka Vágó, Csilla Czimbalmos, Eszter Édes, Endre Zima, Györgyi Apponyi, Gergő Merkely, Tibor Sydó, Dávid Becker, Thomas G Allison, Béla Merkely
OBJECTIVE: Heart rate variability (HRV) analysis has been used to evaluate patients with various cardiovascular diseases. While the vast majority of HRV studies have focused on pathological states, our study focuses on the less explored area of HRV analysis across different training intensity and sports. We aimed to measure HRV in healthy elite and masters athletes and compare to healthy, but non-athletic controls. METHODS: Time-domain HRV analysis was applied in 138 athletes (male 110, age 28...
August 2016: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/27255429/the-lower-body-muscle-activation-of-intermediate-to-experienced-kayakers-when-navigating-white-water
#20
Misha Murtagh, Darrell Brooks, Jonathan Sinclair, Stephen Atkins
In white-water kayaking, the legs play a vital part in turning, stabilising and bracing actions. To date, there has been no reported information on neuromuscular activation of the legs in an authentic white-water environment. The aim of the current study was to identify lower body muscle activation, using 'in-boat' electromyography (EMG), whilst navigating a white-water run. Ten experienced male kayakers (age 31.5 ± 12.5 yr, intermediate to advanced experience) completed three successful runs of an international standard white-water course (grade 3 rapids), targeting right and left sides of the course, in a zigzag formation...
November 2016: European Journal of Sport Science
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