keyword
https://read.qxmd.com/read/37117128/one-cool-guy-scientific-contributions-of-john-hayward-cold-water-pioneer
#21
JOURNAL ARTICLE
Curtis Leclerc, Gordon G Giesbrecht
John Hayward, PhD (1937-2012), was an early and significant contributor to the understanding of cold water immersion physiology and survival. This article summarizes his work on the 50th anniversary of his first publication in this area. He described areas of high heat loss and emphasized the importance of protecting these areas during cold exposure using the Heat Escape Lessening Posture (HELP) and the potential for heat donation to these areas during rewarming. He described several factors that affect the rate of core cooling, including body composition, behavior (swimming increases cooling whereas the HELP position decreases cooling), wet and wind, and thermal protective garments (dry suits offered much more protection than wet suits)...
April 26, 2023: Wilderness & Environmental Medicine
https://read.qxmd.com/read/36979748/assessment-of-metabolic-parameters-in-female-triathletes-with-hashimoto-s-thyroiditis-in-poland
#22
JOURNAL ARTICLE
Marcin Gierach, Roman Junik
Background : Hypothyroidism is a complex disorder characterized by an increase in body weight. About 15-30% of hypothyroid patients are reported to be overweight. The triathlon is an endurance combination sport that comprises a sequential swim, cycle, and run. Triathletes must withstand high training loads with various combinations of intensity and volume. Adequate body structure, the ratio of fat and muscle tissue, and adequate hydration play a huge role. The aim of our study was to show the potential differences in metabolic parameters assessed by medical Body Composition Analyzer before the initiation of treatment with L-thyroxine and after 3 and 6 months of treatment in females who practiced triathlon and who were newly diagnosed with Hashimoto's thyroiditis...
March 2, 2023: Biomedicines
https://read.qxmd.com/read/36846460/effects-of-swimming-before-and-during-pregnancy-on-placental-angiogenesis-and-perinatal-outcome-in-high-fat-diet-fed-mice
#23
JOURNAL ARTICLE
Xiaofeng Zhu, Weiwei Chen, Haitang Wang
BACKGROUND: We explored the mechanism underlying exercise-mediated placental angiogenesis and perinatal outcome using mouse models. METHODS: Three-week-old C57BL/6 female mice were randomly divided into four experimental groups: standard-chow diet (SC), standard chow diet + exercise (SC-Ex), high-fat diet (HFD), and high-fat diet + exercise (HFD-Ex). After 13 weeks of exercise intervention, the male and female mice were caged. Approximately six to seven pregnant female mice from each experimental group were randomly selected for body composition, qRT-PCR, histological, and western blot analysis...
2023: PeerJ
https://read.qxmd.com/read/36833016/swimmers-with-down-syndrome-are-healthier-and-physically-fit-than-their-untrained-peers
#24
JOURNAL ARTICLE
Ana Querido, Mário J Costa, Dália Araújo, António R Sampaio, João P Vilas-Boas, Rui Corredeira, Daniel J Daly, Ricardo J Fernandes
While there are positive benefits from physical activity participation for individuals with Down syndrome, little is known about the effects of swimming training. The aim of this study was to compare the body composition and physical fitness profile of competitive swimmers and moderately active (untrained) individuals with Down syndrome. The Eurofit Special test was applied to a group of competitive swimmers ( n = 18) and a group of untrained individuals ( n = 19), all with Down syndrome. In addition, measurements were taken to determine body composition characteristics...
February 7, 2023: Healthcare (Basel, Switzerland)
https://read.qxmd.com/read/36825086/relationship-between-gut-microbiota-and-chinook-salmon-oncorhynchus-tshawytscha-health-and-growth-performance-in-freshwater-recirculating-aquaculture-systems
#25
JOURNAL ARTICLE
Ruixiang Zhao, Jane E Symonds, Seumas P Walker, Konstanze Steiner, Chris G Carter, John P Bowman, Barbara F Nowak
Gut microbiota play important roles in fish health and growth performance and the microbiome in fish has been shown to be a biomarker for stress. In this study, we surveyed the change of Chinook salmon ( Oncorhynchus tshawytscha ) gut and water microbiota in freshwater recirculating aquaculture systems (RAS) for 7 months and evaluated how gut microbial communities were influenced by fish health and growth performance. The gut microbial diversity significantly increased in parallel with the growth of the fish...
2023: Frontiers in Microbiology
https://read.qxmd.com/read/36754061/analysis-of-factors-associated-with-continued-cooling-of-core-temperature-after-prolonged-cold-water-swimming
#26
JOURNAL ARTICLE
Joffrey Drigny, Corentin Hingrand, Pauline Moysan, Thibaud Collet, Benoit Mauvieux
PURPOSE: To assess the factors associated with continued cooling duration of core temperature (Tcore°) after prolonged outdoor cold-water swimming. METHODS: We designed a cohort study among swimmers participating in an outdoor cold-water swim during qualifying for the English Channel Swim. The day before the event, the participants completed a demographic questionnaire, and body composition was measured using bioelectrical impedance analysis (mBCA 525, Seca)...
February 8, 2023: International Journal of Sports Physiology and Performance
https://read.qxmd.com/read/36717916/pulmonary-rehabilitation-integrated-coached-exercise-training-for-patients-with-copd-a-study-protocol-for-a-randomized-controlled-trial
#27
JOURNAL ARTICLE
Yuting Jing, Yuying Ma, Hongxing Zhang, Zhenhu Wu, Yongwen Li, Haoxuan Li, Minling Huang, Lin Lin, Yinji Xu
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is the most common chronic lung disease creating an immense burden on social health care systems. Pulmonary rehabilitation (PR) has proven to be effective in patients with COPD. However, exercise training as the basis of PR becomes extremely tedious, occasionally causing a loss of perseverance in patients. Therefore, we considered an approach that makes this technique interesting and easier to persist. The aim of this project was to explore an exercise training approach based on PR-integrated coached exercise training to promote the new exercise training approach as a form of group rehabilitation activity in the future...
January 30, 2023: Trials
https://read.qxmd.com/read/36693105/metabolic-reprogramming-underlies-cavefish-muscular-endurance-despite-loss-of-muscle-mass-and-contractility
#28
JOURNAL ARTICLE
Luke Olsen, Michaella Levy, J Kyle Medley, Huzaifa Hassan, Brandon Miller, Richard Alexander, Emma Wilcock, Kexi Yi, Laurence Florens, Kyle Weaver, Sean A McKinney, Robert Peuß, Jenna Persons, Alexander Kenzior, Ernesto Maldonado, Kym Delventhal, Andrew Gluesenkamp, Edward Mager, David Coughlin, Nicolas Rohner
Physical inactivity is a scourge to human health, promoting metabolic disease and muscle wasting. Interestingly, multiple ecological niches have relaxed investment into physical activity, providing an evolutionary perspective into the effect of adaptive physical inactivity on tissue homeostasis. One such example, the Mexican cavefish Astyanax mexicanus, has lost moderate-to-vigorous activity following cave colonization, reaching basal swim speeds ~3.7-fold slower than their river-dwelling counterpart. This change in behavior is accompanied by a marked shift in body composition, decreasing total muscle mass and increasing fat mass...
January 31, 2023: Proceedings of the National Academy of Sciences of the United States of America
https://read.qxmd.com/read/36641976/exploring-the-mechanism-of-xingpi-capsule-in-diarrhea-predominant-irritable-bowel-syndrome-treatment-based-on-multiomics-technology
#29
JOURNAL ARTICLE
Weina Qian, Weili Li, Xiaoyang Chen, Lingwen Cui, Xiangning Liu, Junkai Yao, Xiaoping Wang, Yizhou Liu, Chun Li, Yong Wang, Wei Wang
BACKGROUND: Xingpi Capsule (XP), a commercially available over-the-counter herbal medicine in China, plays a prominent role in treating diarrhea-predominant irritable bowel syndrome (IBS-D). Nevertheless, the potential mechanisms remain unclear. PURPOSE: This study aimed to investigate XP efficacy in IBS-D and elucidate the underlying molecular mechanisms. METHODS: A rat IBS-D model was established by senna decoction gavage combined with restraint stress and swimming exhaustion...
January 11, 2023: Phytomedicine
https://read.qxmd.com/read/36550591/antidepression-of-xingpijieyu-formula-targets-gut-microbiota-derived-from-depressive-disorder
#30
JOURNAL ARTICLE
Yannan Li, Lixuan Yang, Junnan Li, Wei Gao, Zhonghui Zhao, Kaiqiang Dong, Wenzhe Duan, Baoan Dai, Rongjuan Guo
OBJECTIVE: This investigation aims to determine the antidepressant role of Xingpijieyu formula (XPJYF) mediated via gut microbiota (GM)-brain axis. METHODS: We collected fecal microbiota from patients with depressive disorder (DD) and cultured microbiota in vitro. Some of microbiota were transplanted into germ-free rats with the intragastric administration of XPJYF grain at the dose of 1.533 g/kg/day. The behaviors were studied by forced swimming test, open field test, sucrose preference test, and body weight...
December 22, 2022: CNS Neuroscience & Therapeutics
https://read.qxmd.com/read/36414552/-antifatigue-effects-of-the-composition-of-moringa-oleifera-leaves-and-polygonatum-polysaccharide-and-its-mechanisms
#31
JOURNAL ARTICLE
Wei-Na Gao, Xiang-Yu Bian, Qin-Gao Xu, Wei-Yun Dong, Yu-Ying Ma, Chang-Jiang Guo
Objective: To investigate the anti-fatigue effects of composition of Moringa oleifera leaves and Polygonatum polysaccharide, and to explore the mechanisms. Methods: Thirty male Kunming mice were randomly divided into control (C) and composition of Moringa oleifera leaves and Polygonatum polysaccharide group (MP). There were 15 mice in each group. Group C was given distilled water and the group MP was given composition intragastriclly every day. The volume was 0.5 ml. After 14 days of treatment, weight-bearing swimming experiment was conducted, and exhaustive swimming time was recorded...
July 2022: Chinese Journal of Applied Physiology
https://read.qxmd.com/read/36407903/can-predators-stabilize-host-parasite-interactions-changes-in-aquatic-predator-identity-alter-amphibian-responses-and-parasite-abundance-across-life-stages
#32
JOURNAL ARTICLE
Miranda Strasburg, Michelle D Boone
The role of parasites can change depending on the food web community. Predators, for instance, can amplify or dilute parasite effects on their hosts. Likewise, exposure to parasites or predators at one life stage can have long-term consequences on individual performance and survival, which can influence population and disease dynamics. To understand how predators affect amphibian parasite infections across life stages, we manipulated exposure of northern leopard frog ( Rana pipiens ) tadpoles to three predators (crayfish [ Orconectes rusticus ], bluegill [ Lepomis macrochirus ], or mosquitofish [ Gambusia affinis ]) and to trematode parasites ( Echinostoma spp...
November 2022: Ecology and Evolution
https://read.qxmd.com/read/36347849/multimodal-collective-swimming-of-magnetically-articulated-modular-nanocomposite-robots
#33
JOURNAL ARTICLE
Sukyoung Won, Hee Eun Lee, Young Shik Cho, Kijun Yang, Jeong Eun Park, Seung Jae Yang, Jeong Jae Wie
Magnetically responsive composites can impart maneuverability to miniaturized robots. However, collective actuation of these composite robots has rarely been achieved, although conducting cooperative tasks is a promising strategy for accomplishing difficult missions with a single robot. Here, we report multimodal collective swimming of ternary-nanocomposite-based magnetic robots capable of on-demand switching between rectilinear translational swimming and rotational swimming. The nanocomposite robots comprise a stiff yet lightweight carbon nanotube yarn (CNTY) framework surrounded by a magnetic polymer composite, which mimics the hierarchical architecture of musculoskeletal systems, yielding magnetically articulated multiple robots with an agile above-water swimmability (~180 body lengths per second) and modularity...
November 8, 2022: Nature Communications
https://read.qxmd.com/read/36284120/ameliorative-effect-of-oregano-origanum-vulgare-versus-silymarin-in-experimentally-induced-hepatic-encephalopathy
#34
JOURNAL ARTICLE
Eman A R Abdelghffar, Heba A S El-Nashar, Shaimaa Fayez, Wael A Obaid, Omayma A Eldahshan
Hepatic encephalopathy (HE) is a deterioration of brain function in patients suffering from chronic liver disease, cirrhosis as a result of elevated blood ammonia and the production of pseudo-neurotransmitters. Herein, we investigated the chemical composition of hexane extract from Origanum vulgare (O. vulgare) leaves as well as its possible protective effects against thioacetamide (TAA)-induced HE in rats. GC-MS analysis of the extract revealed tentative identification of twenty-five compounds (82.93%), predominated by cholesten-3-one (27...
October 25, 2022: Scientific Reports
https://read.qxmd.com/read/36197539/effects-of-sustained-swimming-exercise-on-growth-and-body-composition-responses-of-nile-tilapia-oreochromis-niloticus-red-drum-sciaenops-ocellatus-and-hybrid-striped-bass-morone-chrysops-%C3%A3-m-saxatilis
#35
JOURNAL ARTICLE
Alton Burns, Delbert M Gatlin
Exercise has been shown to increase growth of many salmonid species. However, limited research has evaluated exercise on warmwater species. The present study was conducted to evaluate with tilapia, red drum (RD), and hybrid striped bass (HSB), the effects of swimming (exercising) in a constant slow current of approximately one body length/s (1bl/s) compared to not being forced to swim in a static culture system. Concurrent trials were conducted with 22 advanced juvenile male Nile tilapia (Wt0 97.9 ± 2...
October 5, 2022: Fish Physiology and Biochemistry
https://read.qxmd.com/read/36169394/body-composition-and-anthropometrics-of-young-male-swimmers-in-relation-to-the-tethered-swimming-and-kinematics-of-100-m-front-crawl-race
#36
JOURNAL ARTICLE
Kamil Sokołowski, Marek Strzała, Artur Radecki-Pawlik
BACKGROUND: The aim was to analyse the relationship of body mass and predicted muscle mass of body segments on swimming kinematics and tethered swimming indices, and further assess the influence of those indices on 100-m front crawl performance of adolescent male swimmers. METHODS: In 19 volunteer swimmers (age: 13.5 ± 0.44 years, height: 168.6 ± 7.77 cm, body mass: 56.9 ± 10.57 kg), the predicted muscle mass of body segments was assessed with bioelectrical impedance analysis...
September 28, 2022: Journal of Sports Medicine and Physical Fitness
https://read.qxmd.com/read/36137565/health-effects-of-voluntary-exposure-to-cold-water-a-continuing-subject-of-debate
#37
REVIEW
Didrik Esperland, Louis de Weerd, James B Mercer
This review is based on a multiple database survey on published literature to determine the effects on health following voluntary exposure to cold-water immersion (CWI) in humans. After a filtering process 104 studies were regarded relevant. Many studies demonstrated significant effects of CWI on various physiological and biochemical parameters. Although some studies were based on established winter swimmers, many were performed on subjects with no previous winter swimming experience or in subjects not involving cold-water swimming, for example, CWI as a post-exercise treatment...
December 2022: International Journal of Circumpolar Health
https://read.qxmd.com/read/36064634/hungarian-male-water-polo-players-body-composition-can-predict-specific-playing-positions-and-highlight-different-nutritional-needs-for-optimal-sports-performance
#38
JOURNAL ARTICLE
Péter Fritz, Réka Fritz, Lívia Mayer, Boglárka Németh, Judit Ressinka, Pongrác Ács, Csilla Oláh
BACKGROUND: Water polo is unique among aquatic-and generally other-sports as it includes cyclic elements typical in swimming and acyclic elements occurring mainly in ball games. Moreover, water polo demands high level of technical and tactical skills. Players need an optimal nutritional and physical condition to achieve high athletic performance, which is to a great extend influenced by nutritional habits. We aim to highlight possible shortfalls in players' nutritional intake in relation to positions played within the team...
September 5, 2022: BMC Sports Science, Medicine and Rehabilitation
https://read.qxmd.com/read/35976270/nephroprotective-effect-of-exercise-training-in-cisplatin-induced-renal-damage-in-mice-influence-of-training-protocol
#39
JOURNAL ARTICLE
A A Almeida, T M L Correia, R A Pires, D A da Silva, R S Coqueiro, M Machado, A C M de Magalhães, R F Queiroz, T J Soares, R Pereira
Cisplatin is an effective antineoplastic agent, but its use is limited by its nephrotoxicity caused by the oxidative stress in tubular epithelium of nephrons. On the other hand, regular exercise provides beneficial adaptations in different tissues and organs. As with many drugs, dosing is extremely important to get the beneficial effects of exercise. Thus, we aimed to investigate the influence of exercise intensity and frequency on cisplatin-induced (20 mg/kg) renal damage in mice. Forty male Swiss mice were divided into five experimental groups (n=8 per group): 1) sedentary; 2) low-intensity forced swimming, three times per week; 3) high-intensity forced swimming, three times per week; 4) low-intensity forced swimming, five times per week; and 5) high-intensity forced swimming, five times per week...
2022: Brazilian Journal of Medical and Biological Research
https://read.qxmd.com/read/35934717/muscle-b-mode-ultrasound-and-shear-wave-elastography-in-idiopathic-inflammatory-myopathies-swim-criterion-validation-against-mri-and-muscle-biopsy-findings-in-an-incident-patient-cohort
#40
JOURNAL ARTICLE
Shereen Paramalingam, Merrilee Needham, Sarah Harris, Susan O'Hanlon, Frank Mastaglia, Helen Keen
BACKGROUND: B mode ultrasound (US) and shear wave elastography (SWE) are easily accessible imaging tools for idiopathic inflammatory myopathies (IIM) but require further validation against standard diagnostic procedures such as MRI and muscle biopsy. METHODS: In this prospective cross-sectional study we compared US findings to MRI and muscle biopsy findings in a group of 18 patients (11 F, 7 M) with active IIM (dermatomyositis 6, necrotising autoimmune myopathy 7, inclusion body myositis 4, overlap myositis 1) who had one or both procedures on the same muscle...
August 8, 2022: BMC rheumatology
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