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https://www.readbyqxmd.com/read/29146511/surgical-management-of-proximal-interphalangeal-joint-repetitive-stress-epiphyseal-fracture-nonunion-in-elite-sport-climbers
#1
Yasser El-Sheikh, Chris Lutter, Isabelle Schoeffl, Volker Schoeffl, Sascha Flohe
Repetitive stress fracture of the middle phalanx epiphysis is an injury specific to elite adolescent sport climbers. As sport climbing becomes increasingly popular in younger age groups, an increased number of these injuries have been reported in recent years. To date, treatment of these fractures has been nonsurgical, with strict rest and physiotherapy prescribed until fracture union. However, when these patients present in a delayed fashion with an established nonunion, nonsurgical treatment may fail, leading to disabling chronic pain and/or digital deformity in some cases...
November 14, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29056919/analysis-of-relations-between-spatiotemporal-movement-regulation-and-performance-of-discrete-actions-reveals-functionality-in-skilled-climbing
#2
REVIEW
Dominic Orth, Graham Kerr, Keith Davids, Ludovic Seifert
In this review of research on climbing expertise, we focus on different measures of climbing performance, including spatiotemporal measures related to fluency and activity states (i.e., discrete actions), adopted by climbers for achieving overall performance goals of getting to the end of a route efficiently and safely. Currently, a broad range of variables have been reported, however, many of these fail to capture how climbers adapt to a route whilst climbing. We argue that spatiotemporal measures should be considered concurrently with evaluation of activity states (such as reaching or exploring) in order gain a more comprehensive picture of how climbers successfully adapt to a route...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29042159/pulley-injuries-in-rock-climbers-hand-therapy-clinical-application
#3
Lori Algar, Matthew Moschetto
No abstract text is available yet for this article.
October 14, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/29036342/the-ecophysiology-of-leaf-cuticular-transpiration-are-cuticular-water-permeabilities-adapted-to-ecological-conditions
#4
Ann-Christin Schuster, Markus Burghardt, Markus Riederer
When the stomata are closed under drought, the only route for water loss from the leaf interior to the atmosphere is across the cuticle. Thus, the extent of cuticular transpiration in relation to the reservoirs of water in the plant and the water acquisition from the soil determines the fitness and survival of the plant. It is, therefore, widely assumed that the cuticular water permeability of plants regularly experiencing drought is comparatively low and, thus, adapted to the environment. To test this hypothesis, 382 measurements of cuticular permeability from 160 species were extracted from the literature published between 1996 and 2017...
November 9, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29017287/neal-s-kleiman-md-cardiologist-climber-scientist-survivor
#5
Ankur Kalra
No abstract text is available yet for this article.
July 14, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28981369/the-elusive-path-of-brain-tissue-oxygenation-and-cerebral-perfusion-in-harness-hang-syncope-in-mountain-climbers
#6
Francesca Lanfranconi, Luca Pollastri, Giovanni Corna, Manuela Bartesaghi, Massimiliano Novarina, Alessandra Ferri, Giuseppe Andrea Miserocchi
Lanfranconi, Francesca, Luca Pollastri, Giovanni Corna, Manuela Bartesaghi, Massimiliano Novarina, Alessandra Ferri, and Giuseppe Andrea Miserocchi. The elusive path of brain tissue oxygenation and cerebral perfusion in harness hang syncope in mountain climbers. High Alt Med Biol. 18:000-000, 2017. AIM: Harness hang syncope (HHS) is a risk that specifically affects wide ranges of situations requiring safety harnesses in mountains. An irreversible orthostatic stasis could lead to death if a prompt rescue is not performed...
October 5, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28949829/performance-mood-and-anxiety-during-a-climb-of-mount-everest
#7
Heikki M Karinen, Martti T Tuomisto
Karinen, Heikki M., and Martti T. Tuomisto. Performance, mood, and anxiety during a climb of Mount Everest. High Alt Med Biol. 16:000-000, 2017. BACKGROUND: Various studies have shown the deleterious effects of high-altitude hypoxia on visual, motor, somatosensory, cognitive, and emotional function and also in intelligence tests, reaction time, speech comprehension, hand steadiness, visual contrast discrimination, and word association tests. Because optimal cognitive abilities may be crucial for mountain climbers' safety, this study was intended to evaluate the changes in cognitive performance, mood, and anxiety during an Everest expedition lasting almost 3 months...
September 26, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28945641/four-weeks-of-finger-grip-training-increases-the-rate-of-force-development-and-the-maximal-force-in-elite-and-world-top-ranking-climbers
#8
Guillaume Levernier, Guillaume Laffaye
The goal of this study was to assess the impact of a specific four-week training program on finger grip in climbers; specifically, on the maximal force and the rate of force development (RFD) of finger muscles in isometric contraction. The participants were 14 French male rock climbers who took part in national and international bouldering competitions (at world-ranking and elite levels). They were divided into two samples. The experimental group performed a specific four-week training program that included such exercises as suspensions on small holds at the rate of three times a week...
September 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28939274/functional-and-sports-specific-outcome-after-surgical-repair-of-rotator-cuff-tears-in-rock-climbers
#9
Michael Simon, Dominik Popp, Christoph Lutter, Volker Schöffl
OBJECTIVE: The purpose of this study was to analyze the general (Constant Murley score) and sports-specific (change in International Climbing and Mountaineering Federation [UIAA] grade) outcome after surgical repair of rotator cuff injuries in rock climbers. METHODS: In a retrospective study, 12 rock climbers (10 men, 2 women; age 55 years; SD±9; range 28-66 years [mean±SD with range] with rotator cuff lesions were re-evaluated 27±16 (12-72) months after arthroscopic surgical repair of the rotator cuff of the shoulder...
September 19, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28923581/constraints-representing-a-meta-stable-r%C3%A3-gime-facilitate-exploration-during-practice-and-transfer-of-learning-in-a-complex-multi-articular-task
#10
Dominic Orth, Keith Davids, Ludovic Seifert
Previous investigations have shown that inducing meta-stability in behavior can be achieved by overlapping affordances through constraint manipulation, allowing cooperative and competitive tendencies to functionally coexist. The purpose of this paper was to test a number of conditions applying these design principles on performance during skills practice and transfer. Of additional interest, was whether the existing skill level interacted with the environmental properties of the experimental tasks (varying indoor climbing routes)...
September 16, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28882263/evaluating-the-stability-of-a-freestanding-mast-climbing-work-platform
#11
Bryan Wimer, Christopher Pan, Tim Lutz, Mat Hause, Chris Warren, Ren Dong, Sherry Xu
Mast Climbing Work Platforms (MCWPs) are becoming more common at construction sites and are being used as an alternative to traditional scaffolding. Although their use is increasing, little to no published information exists on the potential safety hazards they could pose for workers. As a last line of defense, a personal fall-arrest system can be used to save a worker in a fall incident from the platform. There has been no published information on whether it is safe to use such a personal fall-arrest system with MCWPs...
September 2017: Journal of Safety Research
https://www.readbyqxmd.com/read/28869622/spinal-range-of-motion-and-plantar-pressure-in-sport-climbers
#12
Arletta Hawrylak, Krystyna Chromik, Barbara Ratajczak, Katarzyna Barczyk-Pawelec, Ewa Demczuk-Włodarczyk
PURPOSE: The aim of the study was to investigate the range of motion (ROM) of lumbar and thoracic articulations and static and dynamic plantar pressure in sport climbing athletes. METHODS: The sample included 30 sport climbers with a minimum of 2 years training experience and 30 physical education students who served as an active untrained control. ROM was assessed by a Saunders digital inclinometer and plantar pressure by a baropodometric platform. RESULTS: Mean spinal ROMs were greater in the sport climbers with an exception of extension, rotation, and lateral thoracic flexion, with a high degree of statistical significance obtained in the majority of the analyzed ROMs...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/28806646/static-flexural-properties-of-hedgehog-spines-conditioned-in-coupled-temperature-and-relative-humidity-environments
#13
Emily B Kennedy, Bor-Kai Hsiung, Nathan B Swift, Kwek-Tze Tan
Hedgehogs are agile climbers, scaling trees and plants to heights exceeding 10m while foraging insects. Hedgehog spines (a.k.a. quills) provide fall protection by absorbing shock and could offer insights for the design of lightweight, material-efficient, impact-resistant structures. There has been some study of flexural properties of hedgehog spines, but an understanding of how this keratinous biological material is affected by various temperature and relative humidity treatments, or how spine color (multicolored vs...
August 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28771525/the-role-of-physique-strength-and-endurance-in-the-achievements-of-elite-climbers
#14
Mariusz Ozimek, Robert Rokowski, Paweł Draga, Vladimir Ljakh, Tadeusz Ambroży, Marcin Krawczyk, Tomasz Ręgwelski, Arkadiusz Stanula, Karol Görner, Adam Jurczak, Dariusz Mucha
PURPOSE: The primary aim of this study is to determine the principal somatic and motor determinants for elite climbers. METHODS: Twenty climbers were examined [age: 28.5±6.1 years].The runners were divided into two groups based on their climbing level, according to the International Rock Climbing Research Association (IRCRA). Elite climbers represented a 8b-8c Rotpunkt (RP) climbing level (n = 6), and advanced climbers represented an 7c+-8a RP level (n = 14). The following measurements were assessed: height, weight, lean body mass, upper limb length, arm span, and forearm, arm, thigh and calf circumference...
2017: PloS One
https://www.readbyqxmd.com/read/28769023/isolation-purification-and-structural-characterization-of-two-novel-water-soluble-polysaccharides-from-anredera-cordifolia
#15
Zhi-Peng Zhang, Can-Can Shen, Fu-Li Gao, Hui Wei, Di-Feng Ren, Jun Lu
Anredera cordifolia, a climber and member of the Basellaceae family, has long been a traditional medicine used for the treatment of hyperglycemia in China. Two water-soluble polysaccharides, ACP1-1 and ACP2-1, were isolated from A. cordifolia seeds by hot water extraction. The two fractions, ACP1-1 and ACP2-1 with molecular weights of 46.78 kDa ± 0.03 and 586.8 kDa ± 0.05, respectively, were purified by chromatography. ACP1-1 contained mannose, glucose, galactose in a molar ratio of 1.08:4.65:1.75, whereas ACP2-1 contained arabinose, ribose, galactose, glucose, mannose in a molar ratio of 0...
August 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28767727/rock-climbing-alters-plant-species-composition-cover-and-richness-in-mediterranean-limestone-cliffs
#16
Juan Lorite, Fabio Serrano, Adrián Lorenzo, Eva M Cañadas, Miguel Ballesteros, Julio Peñas
Rock climbing is among the outdoor activities that have undergone the highest growth since the second half of the 20th century. As a result, cliff habitats, historically one of the least disturbed by human colonization worldwide, are facing more intense human pressure than ever before. However, there is little data on the impact of this activity in plant-communities, and such information is indispensable for adequate manager decision-making. The goal of this study was to determine the impact of rock climbing on plant communities in terms of cover, richness, and composition in relation to climbing intensity on typical Mediterranean limestone cliffs...
2017: PloS One
https://www.readbyqxmd.com/read/28755819/descriptive-epidemiology-medical-evaluation-and-outcomes-of-rock-climbing-injuries
#17
James W McDonald, A Michael Henrie, Masaru Teramoto, Edward Medina, Stuart E Willick
OBJECTIVE: To gather epidemiologic data on injury type, treatment, and recovery from rock climbing injuries. METHODS: Design: retrospective cross-sectional study. SETTING: web-based survey. PARTICIPANTS: rock climbers who sustained a climbing-related injury during the prior 24 months. Criteria for inclusion: aged ≥18 years; participation in rock climbing at least 4 times per year in the United States. INTERVENTIONS: none...
July 26, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28753391/differences-in-forearm-strength-endurance-and-hemodynamic-kinetics-between-male-boulderers-and-lead-rock-climbers
#18
COMPARATIVE STUDY
S Fryer, K J Stone, J Sveen, T Dickson, V España-Romero, D Giles, J Baláš, L Stoner, N Draper
This study examined differences in the oxygenation kinetics and strength and endurance characteristics of boulderers and lead sport climbers. Using near infrared spectroscopy, 13-boulderers, 10-lead climbers, and 10-controls completed assessments of oxidative capacity index and muscle oxygen consumption (m⩒O2) in the flexor digitorum profundus (FDP), and extensor digitorum communis (EDC). Additionally, forearm strength (maximal volitional contraction MVC), endurance (force-time integral FTI at 40% MVC), and forearm volume (FAV and ΔFAV) was assessed...
October 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28743580/comparison-of-balance-strategies-in-mountain-climbers-during-real-altitude-exposure-between-1-500m-and-3-200m-effects-of-age-and-expertise
#19
Anne-Violette Bruyneel, Arnaud Humbert, Marc Bertrand
PURPOSE: The aim of this study was to estimate the effect of altitude (1500m vs. 3200m) on balance strategies, and to determine the influence of age (> or <40 years) and expertise (> or <20days of mountain climbing/year) on postural stability at altitude. METHOD: Eighty-nine volunteer mountaineers were tested at 1500m, 3200m immediately after exiting the cable car and at 3200m following the climb and return. Double-leg stance with eyes closed and single-leg stance with eyes open were tested...
July 22, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28732027/serum-irisin-and-myostatin-levels-after-2-weeks-of-high-altitude-climbing
#20
Ewa Śliwicka, Tomasz Cisoń, Zbigniew Kasprzak, Alicja Nowak, Łucja Pilaczyńska-Szcześniak
Exposure to high-altitude hypoxia causes physiological and metabolic adaptive changes by disturbing homeostasis. Hypoxia-related changes in skeletal muscle affect the closely interconnected energy and regeneration processes. The balance between protein synthesis and degradation in the skeletal muscle is regulated by several molecules such as myostatin, cytokines, vitamin D, and irisin. This study investigates changes in irisin and myostatin levels in male climbers after a 2-week high-altitude expedition, and their association with 25(OH)D and indices of inflammatory processes...
2017: PloS One
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