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https://www.readbyqxmd.com/read/29792425/roasted-barley-extract-mugi-cha-containing-cyclo-d-phe-l-pro-prevents-lowering-of-cutaneous-blood-flow-and-skin-temperature-under-air-conditioning-a-randomized-double-blind-placebo-controlled-crossover-study
#1
Hiroshi Ashigai, Mai Mizutani, Yoshimasa Taniguchi, Yasuko Matsukura, Keiko Nakashima, Emiko Ikeshima, Hiroaki Yajima
Roasted barley extract (RBE), also known as mugi-cha, is a well-known healthy non-caffeinated beverage and its health functionality has been widely reported. Our previous clinical study showed that RBE affects cutaneous blood flow and skin temperature after cold water immersion, and that cyclo (D-Phe-L-Pro) is responsible for its effect. In this study, we investigated whether cyclo (D-Phe-L-Pro)-containing RBE prevents the decrease in cutaneous blood flow and skin temperature in an excessively air-conditioned room...
May 24, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29789083/low-baseline-sympathetic-tone-correlates-to-a-greater-blood-pressure-change-in-the-cold-pressor-test
#2
Marylen Youssef, Azadeh Ghassemi, Catalina Marysol Carvajal Gonczi, Thiffya Arabi Kugathasan, Robert D Kilgour, Peter J Darlington
BACKGROUND: The cold pressor test (CPT) involves acute hand or foot exposure to cold water. CPT hyper-responders have unique traits, including risk of hypertension and a greater vasoconstrictor reserve and g force tolerance compared to hypo-responders. The purpose of this study was to uncover differences in cardiovascular and sympathetic biomarkers between responder types. METHODS: Healthy volunteers (N = 30) submerged one hand into cold water (3.3 ± 0.8°C) for 5 min...
June 1, 2018: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29773686/drivers-of-the-dive-response-in-pinnipeds-apnea-submergence-or-temperature
#3
Jeppe Kaczmarek, Colleen Reichmuth, Birgitte I McDonald, Jakob H Kristensen, Josefin Larson, Fredrik Johansson, Jenna L Sullivan, Peter T Madsen
Long and deep dives in marine mammals are enabled by high mass-specific oxygen stores and the dive response (DR), which reduces oxygen consumption in concert with increased peripheral vasoconstriction and a lowered heart rate during dives. Diving heart rates of pinnipeds are highly variable and modulated by many factors, such as breath holding (apnea), pressure, swimming activity, temperature, and even cognitive control. However, the individual effects of these factors on diving heart rate are poorly understood due to the difficulty of parsing their relative contributions in diving pinnipeds...
May 17, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29758507/recovery-practices-in-division-1-collegiate-athletes-in-north-america
#4
Andrew Murray, Hugh Fullagar, Anthony P Turner, John Sproule
OBJECTIVES: Establish current practice and attitudes towards recovery in a group of Division-1 Collegiate athletes from North America. DESIGN: A 16-item questionnaire was administered via custom software in an electronic format. PARTICIPANTS: 152 student athletes from a Division-1 Collegiate school across 3 sports (Basketball, American Football, Soccer). MAIN OUTCOME MEASURES: The approaches and attitudes to recovery in both training and competition...
May 8, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29755363/an-evidence-based-approach-for-choosing-post-exercise-recovery-techniques-to-reduce-markers-of-muscle-damage-soreness-fatigue-and-inflammation-a-systematic-review-with-meta-analysis
#5
Olivier Dupuy, Wafa Douzi, Dimitri Theurot, Laurent Bosquet, Benoit Dugué
Introduction: The aim of the present work was to perform a meta-analysis evaluating the impact of recovery techniques on delayed onset muscle soreness (DOMS), perceived fatigue, muscle damage, and inflammatory markers after physical exercise. Method: Three databases including PubMed, Embase , and Web-of-Science were searched using the following terms: ("recovery" or "active recovery" or "cooling" or "massage" or "compression garment" or "electrostimulation" or "stretching" or "immersion" or "cryotherapy") and ("DOMS" or "perceived fatigue" or "CK" or "CRP" or "IL-6") and ("after exercise" or "post-exercise") for randomized controlled trials, crossover trials, and repeated-measure studies...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29745801/cold-water-immersion-after-training-sessions-effects-on-fiber-type-specific-adaptations-in-muscle-k-transport-proteins-to-sprint-interval-training-in-men
#6
Danny Christiansen, David John Bishop, James R Broatch, Jens Bangsbo, Michael John McKenna, Robyn M Murphy
Effects of regular use of cold-water immersion (CWI) on fiber type-specific adaptations in muscle K+ transport proteins to intense training, along with their relationship to changes in mRNA levels after the first training session, were investigated in humans. Nineteen recreationally-active men (24{plus minus}6 y, 79.5{plus minus}10.8 kg, 44.6{plus minus}5.8 mL∙kg-1 ∙min-1 ) completed six weeks of sprint-interval cycling either without (passive rest; CON) or with training sessions followed by CWI (15 min at 10{degree sign}C; COLD)...
May 10, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29740070/flood-conditioned-place-aversion-as-a-novel-non-pharmacological-aversive-learning-procedure-in-mice
#7
Koral Goltseker, Segev Barak
The place conditioning paradigm is an efficient, widely-used method to study mechanisms that underlie appetitive or aversive learning and memory processes. However, pharmacological agents used to induce conditioned place preference (CPP) or aversion (CPA) can per se interfere with learning and memory processing, hence confounding the results. Therefore, non-pharmacological place conditioning procedures are of high importance. Here, we introduce a novel procedure for induction of CPA in mice, by water flooding...
May 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29739454/l-menthol-attenuates-the-magnitude-of-cold-induced-vasodilation-on-the-extremities-of-young-females
#8
Siyeon Kim, Joo-Young Lee
BACKGROUND: Menthol chemically triggers cold-sensitive receptors in the skin without conductive skin cooling. We investigated the effects of menthol-induced activation of cutaneous cold receptors on the cold-induced vasodilation (CIVD) of the finger. We hypothesized that the menthol application would attenuate typical CIVD responses. METHODS: 1.5% L-menthol was fully applied over the left hand and forearm, and then, the middle finger of the left hand was immersed into 4 °C water for 30 min...
May 9, 2018: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/29738892/effect-of-short-term-cold-water-immersion-on-muscle-pain-sensitivity-in-elite-track-cyclists
#9
Sebastian Klich, Igor Krymski, Kamil Michalik, Adam Kawczyński
OBJECTIVE: To determine the effect of short-term cold-water immersion (CWI) on muscle pain sensitivity after maximal anaerobic power training in track cyclists. DESIGN: Repeated measures. SETTING: University Laboratory. PARTICIPANTS: 12 elite sprint track cyclists (age 24,75 ± 4,23 years). MAIN OUTCOME MEASURES: PPT measurements were made on dominant lower extremity (right) in 20 reference points, including anterior thigh muscles, posterior thigh muscles and posterior cuff muscles...
May 1, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29695988/acute-anxiety-predicts-components-of-the-cold-shock-response-on-cold-water-immersion-toward-an-integrated-psychophysiological-model-of-acute-cold-water-survival
#10
Martin J Barwood, Jo Corbett, Heather Massey, Terry McMorris, Mike Tipton, Christopher R D Wagstaff
Introduction: Drowning is a leading cause of accidental death. In cold-water, sudden skin cooling triggers the life-threatening cold shock response (CSR). The CSR comprises tachycardia, peripheral vasoconstriction, hypertension, inspiratory gasp, and hyperventilation with the hyperventilatory component inducing hypocapnia and increasing risk of aspirating water to the lungs. Some CSR components can be reduced by habituation (i.e., reduced response to stimulus of same magnitude) induced by 3-5 short cold-water immersions (CWI)...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29685828/influence-of-cold-water-immersion-on-recovery-of-elite-triathletes-following-the-ironman-world-championship
#11
Rebecca L Stearns, Julie K Nolan, Robert A Huggins, Carl M Maresh, Colleen X Munõz, Kelly D Pagnotta, Brittanie M Volk, Douglas J Casa
OBJECTIVES: Cold water immersion (CWI) has been widely used for enhancing athlete recovery though its use following an Ironman triathlon has never been examined. The purpose of this paper is to determine the influence of CWI immediately following an Ironman triathlon on markers of muscle damage, inflammation and muscle soreness. DESIGN: Prospective cohort study. METHODS: Thirty three (22 male, 11 female), triathletes participating in the Ironman World Championships volunteered to participate (mean±SD: age=40±11years; height=174...
January 31, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29676438/the-influence-of-digit-size-and-proportions-on-dexterity-during-cold-exposure
#12
Stephanie Payne, Alison Macintosh, Jay Stock
OBJECTIVES: The current study investigated whether size and proportions of the hands and digits affect dexterity during severe cold exposure. As wide hands are known to lose less heat than narrow hands, and narrow digits are associated with greater dexterity, this study aimed to test whether there was a direct trade-off between dexterity and thermoregulation that shapes hand morphology. METHODS: Participants (25 women, 15 men) carried out the Purdue Pegboard test before and after a 3-min ice-water immersion of the hand...
April 20, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29652665/effect-of-flavonol-and-its-dimethoxy-derivatives-on-paclitaxel-induced-peripheral-neuropathy-in-mice
#13
Vijaykumar Sayeli, Jagan Nadipelly, Parimala Kadhirvelu, Binoy Varghese Cheriyan, Jaikumar Shanmugasundaram, Viswanathan Subramanian
BACKGROUND: Peripheral neuropathy is the dose limiting side effect of many anticancer drugs. Flavonoids exhibit good antinociceptive effect in animal models. Their efficacy against different types of nociception has been documented. The present study investigated the effect of flavonol (3-hydroxy flavone), 3',4'-dimethoxy flavonol, 6,3'-dimethoxy flavonol, 7,2'-dimethoxy flavonol and 7,3'-dimethoxy flavonol against paclitaxel-induced peripheral neuropathy in mice. METHODS: A single dose of paclitaxel (10 mg/kg, i...
April 13, 2018: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29627884/the-influence-of-post-exercise-cold-water-immersion-on-adaptive-responses-to-exercise-a-review-of-the-literature
#14
REVIEW
James R Broatch, Aaron Petersen, David J Bishop
Post-exercise cold-water immersion (CWI) is used extensively in exercise training as a means to minimise fatigue and expedite recovery between sessions. However, debate exists around its merit in long-term training regimens. While an improvement in recovery following a single session of exercise may improve subsequent training quality and stimulus, reports have emerged suggesting CWI may attenuate long-term adaptations to exercise training. Recent developments in the understanding of the molecular mechanisms governing the adaptive response to exercise in human skeletal muscle have provided potential mechanistic insight into the effects of CWI on training adaptations...
April 7, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29608373/cold-susceptibility-of-digit-stumps-resulting-from-amputation-after-freezing-cold-injury-in-elite-alpinists
#15
Jurij Gorjanc, Shawnda A Morrison, Rok Blagus, Igor B Mekjavic
Gorjanc, Jurij, Shawnda A. Morrison, Rok Blagus, and Igor B. Mekjavic. Cold susceptibility of digit stumps resulting from amputation after freezing cold injury in elite alpinists. High Alt Med Biol. 16: 000-000, 2018. AIM: The aim of the study was to assess whether previous freezing cold injury in fingers and/or toes might predispose alpinists to greater risk of further freezing cold injury, primarily due to a greater vasoconstrictor response to cold, resulting in a lower perfusion, reflected in lower skin temperature...
April 2, 2018: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29603137/the-thermoregulatory-function-of-the-human-hand-how-do-palm-and-digit-proportions-affect-heat-loss
#16
Stephanie Payne, Alison Macintosh, Jay Stock
OBJECTIVES: The current study assessed whether ecogeographical patterns seen in hand proportions correlate with heat loss directly. Using a brief severe cold immersion experiment on the hand, the influence of hand and digit dimensions on heat loss was evaluated. MATERIALS AND METHODS: A sample of 113 living individuals were tested. Two-dimensional and three-dimensional scanning techniques were used to assess hand and digit dimensions. Thermal imaging analysis was used to quantify heat loss during a 3-min ice-water immersion of the hands...
March 30, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29594509/exertional-heat-illness-incidence-and-on-site-medical-team-preparedness-in-warm-weather
#17
Yuri Hosokawa, William M Adams, Luke N Belval, Robert J Davis, Robert A Huggins, John F Jardine, Rachel K Katch, Rebecca L Stearns, Douglas J Casa
To investigate the influence of estimated wet bulb globe temperature (WBGT) and the International Institute of Race Medicine (IIRM) activity modification guidelines on the incidence of exertional heat stroke (EHS) and heat exhaustion (HEx) and the ability of an on-site medical team to treat those afflicted. Medical records of EHS and HEx patients over a 17-year period from the New Balance Falmouth Road Race were examined. Climatologic data from nearby weather stations were obtained to calculate WBGT with the Australian Bureau of Meteorology (WBGTA ) and Liljegren (WBGTL ) models...
March 29, 2018: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29573884/ten-years-of-research-with-the-socially-evaluated-cold-pressor-test-data-from-the-past-and-guidelines-for-the-future
#18
REVIEW
Lars Schwabe, Hartmut Schächinger
Ten years ago, the Socially Evaluated Cold Pressor Test (SECPT) was introduced as a standardized protocol for the efficient experimental stress induction in humans. In short, the 3 min SECPT, which can be conducted by only a single experimenter, combines a physiological challenge (hand immersion into ice water) with socio-evaluative elements. The purpose of this article is twofold. First, we aim to evaluate the subjective and physiological responses elicited by the SECPT. To this end, we pooled data from 21 studies from our lab and systematically analyzed the response profile to the SECPT...
March 19, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29557101/immersion-pulmonary-oedema-in-a-healthy-diver-not-exposed-to-cold-or-strenuous-exercise
#19
Olivier Castagna, Sébastien de Maistre, Bruno Schmid, Delphine Caudal, Jacques Regnard
In healthy divers, the occurrence of immersion pulmonary oedema (IPE) is commonly caused by contributory factors including strenuous exercise, cold water and negative-pressure breathing. Contrary to this established paradigm, this case reports on a 26-year-old, well-trained combat swimmer who succumbed to acute IPE during static immersion in temperate (21°C) water, while using a front-mounted counterlung rebreather. The incident occurred during repeated depth-controlled ascent practice at the French military diving school...
March 31, 2018: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/29556772/impairment-of-exercise-performance-following-cold-water-immersion-is-not-attenuated-after-7-days-of-cold-acclimation
#20
Douglas M Jones, Bart Roelands, Stephen P Bailey, Michael J Buono, Romain Meeusen
PURPOSE: It is well-documented that severe cold stress impairs exercise performance. Repeated immersion in cold water induces an insulative type of cold acclimation, wherein enhanced vasoconstriction leads to greater body heat retention, which may attenuate cold-induced exercise impairments. The purpose of this study, therefore, was to investigate changes in exercise performance during a 7-day insulative type of cold acclimation. METHODS: Twelve healthy participants consisting of eight males and four females (mean ± SD age: 25...
June 2018: European Journal of Applied Physiology
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