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https://www.readbyqxmd.com/read/28936625/the-reproducibility-of-4-km-time-trial-tt-performance-following-individualised-sodium-bicarbonate-supplementation-a-randomised-controlled-trial-in-trained-cyclists
#1
Lewis Anthony Gough, Sanjoy Kumar Deb, Andy Sparks, Lars Robert McNaughton
BACKGROUND: Individual time to peak blood bicarbonate (HCO3(-)) has demonstrated good to excellent reproducibility following ingestion of both 0.2 g kg(-1) body mass (BM) and 0.3 g kg(-1) BM sodium bicarbonate (NaHCO3), but the consistency of the time trial (TT) performance response using such an individualised NaHCO3 ingestion strategy remains unknown. This study therefore evaluated the reproducibility of 4-km TT performance following NaHCO3 ingestion individualised to time to peak blood bicarbonate...
September 21, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28935628/effect-of-exercise-induced-lactate-elevation-on-brain-lactate-levels-during-hypoglycemia-in-patients-with-type-1-diabetes-and-impaired-awareness-of-hypoglycemia
#2
Evita C Wiegers, Hanne M Rooijackers, Cees J Tack, Hans J M M Groenewoud, Arend Heerschap, Bastiaan E de Galan, Marinette van der Graaf
Since altered brain lactate handling has been implicated in the development of impaired awareness of hypoglycemia (IAH) in type 1 diabetes, the capacity to transport lactate into the brain during hypoglycemia may be relevant in its pathogenesis. High-intensity interval training (HIIT) increases plasma lactate levels. We compared the effect of HIIT-induced hyperlacticacidemia on brain lactate during hypoglycemia between 1) patients with type 1 diabetes and IAH, 2) patients with type 1 diabetes and normal awareness of hypoglycemia (NAH), and 3) healthy non-diabetic participants (n=6 per group)...
September 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28933335/re-evaluating-ttf-1-immunohistochemistry-in-diffuse-gliomas-expression-is-clonedependent-and-associated-with-tumor-location
#3
Drew Pratt, Nina Afsar, Michael Allgauer, Patricia Fetsch, Maryknoll Palisoc, Stefania Pittaluga, Martha Quezado
TTF-1 is widely used as a marker in routine surgical pathology in the work-up of malignancy. Aberrant expression of TTF-1 in extrapulmonary and extrathyroidal malignancies is a frequently reported phenomenon. In addition to the recently characterized pituicyte-derived tumors of the sella, immunoreactivity has been reported in diffuse gliomas with the SPT24 clone. Here, we sought to evaluate TTF-1 expression with three commercially available clones in a large series of gliomas. Expression was compared across the newly defined diagnostic entities in the 2016 WHO Classification of CNS Tumors...
September 21, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28932011/efficacy-of-high-intensity-laser-therapy-in-the-treatment-of-male-with-osteopenia-or-osteoporosis-a-randomized-placebo-controlled-trial
#4
Mohamed Salaheldien Mohamed Alayat, Ehab Mohamed Abdel-Kafy, Ahmed Mohamed Elsoudany, Omar Farouk Helal, Mansour Abdullah Alshehri
[Purpose] To investigate the effect of high intensity laser therapy, alone or combined with exercise on pain, health related quality of life and fall risk in male with osteopenia or osteoporosis. [Subjects and Methods] 100 male patients with osteopenia or osteoporosis participated in the study. They had T-scores ≤-1.5. Patients were randomly assigned into four groups and treated with laser plus exercise, placebo laser plus exercise, laser alone and placebo laser in groups I, II, III, and IV respectively. Laser was applied to the lower back and hip regions...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28929362/brain-reactivity-to-visual-food-stimuli-after-moderate-intensity-exercise-in-children
#5
Travis D Masterson, C Brock Kirwan, Lance E Davidson, Michael J Larson, Kathleen L Keller, S Nicole Fearnbach, Alyssa Evans, James D LeCheminant
Exercise may play a role in moderating eating behaviors. The purpose of this study was to examine the effect of an acute bout of exercise on neural responses to visual food stimuli in children ages 8-11 years. We hypothesized that acute exercise would result in reduced activity in reward areas of the brain. Using a randomized cross-over design, 26 healthy weight children completed two separate laboratory conditions (exercise; sedentary). During the exercise condition, each participant completed a 30-min bout of exercise at moderate-intensity (~ 67% HR maximum) on a motor-driven treadmill...
September 19, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28928069/comments-on-the-new-international-criteria-for-electrocardiographic-interpretation-in-athletes
#6
Luis Serratosa-Fernández, Domingo Pascual-Figal, María Dolores Masiá-Mondéjar, María Sanz-de la Garza, Zigor Madaria-Marijuan, Juan Ramón Gimeno-Blanes, Carmen Adamuz
Sudden cardiac death is the most common medical cause of death during the practice of sports. Several structural and electrical cardiac conditions are associated with sudden cardiac death in athletes, most of them showing abnormal findings on resting electrocardiogram (ECG). However, because of the similarity between some ECG findings associated with physiological adaptations to exercise training and those of certain cardiac conditions, ECG interpretation in athletes is often challenging. Other factors related to ECG findings are race, age, sex, sports discipline, training intensity, and athletic background...
September 16, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28922681/exercise-training-protects-cardiomyocytes-from-deleterious-effects-of-palmitate
#7
Marcia Netto Magalhães Alves, Danilo Roman-Campos, Amanda B Parreira, Pedro W M Almeida, Jader Santos Cruz, Silvia Guatimosim, Marco Fabricio Dias-Peixoto
We investigated the effects of palmitate, a high saturated fat, on Ca(2+), action potential and reactive oxygen species dynamics in cardiomyocytes from untrained and trained mice. Male mice were subjected to moderate intensity exercise training on a treadmill. Cardiomyocytes of untrained and trained mice were isolated, treated for 30 min with palmitate and intracellular calcium transient and action potential duration were recorded. Additionally, we assessed reactive oxygen species generation. Treatment of cardiomyocytes from untrained mice with palmitate induced a significant decrease in Ca(2+) transient magnitude by 34%...
September 18, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28922507/randomized-controlled-trial-evaluating-the-temporal-effects-of-high-intensity-exercise-on-learning-short-term-and-long-term-memory-and-prospective-memory
#8
Emily Frith, Eveleen Sng, Paul D Loprinzi
To examine the temporal effects of high-intensity exercise on learning, short-term and long-term retrospective memory and prospective memory. Among a sample of 88 young adult participants, 22 were randomized into one of four different groups: exercise before learning, control group, exercise during learning and exercise after learning. The retrospective assessments (learning, short-term and long-term memory) were assessed using the Rey Auditory Verbal Learning Test. Short-term memory included a 20-min delay assessment, with long-term memory including a 24-hour follow-up assessment...
September 18, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28921743/exercise-training-dose-differentially-alters-muscle-and-heart-capillary-density-and-metabolic-functions-in-an-obese-rat-with-metabolic-syndrome
#9
Marcus Vinicius Machado, Aline Bomfim Vieira, Fabiana Gomes da Conceição, Alessandro Rodrigues Nascimento, Antonio Claudio Lucas da Nóbrega, Eduardo Tibirica
We evaluated the effect of frequency, duration and intensity of exercise training on metabolic parameters and structural capillary density in obese rats with metabolic syndrome (MS). Wistar-Kyoto rats were fed a either standard commercial diet (CON) or high-fat diet (HFD). Animals that received the HFD were randomly separated into either a sedentary (SED) group or 8 different exercise groups that varied by the frequency, duration and intensity of training. After 12 weeks of aerobic exercise training, body composition, aerobic capacity, hemodynamic variables, metabolic parameters and capillary density in the heart and skeletal muscle were evaluated...
September 17, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28920556/the-effects-of-limb-dominance-and-a-short-term-high-intensity-exercise-protocol-on-both-landings-of-the-vertical-drop-jump-implications-for-the-vertical-drop-jump-as-a-screening-tool
#10
Enda F Whyte, Patrick Kennelly, Oliver Milton, Chris Richter, Siobhán O'Connor, Kieran A Moran
The effectiveness of vertical drop jumps (VDJs) to screen for non-contact ACL injuries is unclear. This may be contributed to by discrete point analysis, which does not evaluate patterns of movement. Also, limited research exists on the second landing of VDJs, potential lower limb performance asymmetries and the effect of fatigue. Statistical parametric mapping investigated the main effects of landing, limb dominance and a high intensity, intermittent exercise protocol (HIIP) on VDJ biomechanics. Twenty-two male athletes (21...
September 18, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28919929/does-physical-activity-benefit-motor-performance-and-learning-of-upper-extremity-tasks-in-older-adults-a-systematic-review
#11
REVIEW
Lena Hübner, Claudia Voelcker-Rehage
Upper extremity motor performance declines with increasing age. However, older adults need to maintain, learn new and relearn known motor tasks. Research with young adults indicated that regular and acute physical activity might facilitate motor performance and motor learning processes. Therefore, this review aimed to examine the association between chronic physical activity and acute bouts of exercise on motor performance and motor learning in upper extremity motor tasks in older adults. Literature was searched via Cochrane library, PubMED, PsycINFO and Scopus and 27 studies met all inclusion criteria...
2017: European Review of Aging and Physical Activity
https://www.readbyqxmd.com/read/28919842/international-society-of-sports-nutrition-position-stand-nutrient-timing
#12
REVIEW
Chad M Kerksick, Shawn Arent, Brad J Schoenfeld, Jeffrey R Stout, Bill Campbell, Colin D Wilborn, Lem Taylor, Doug Kalman, Abbie E Smith-Ryan, Richard B Kreider, Darryn Willoughby, Paul J Arciero, Trisha A VanDusseldorp, Michael J Ormsbee, Robert Wildman, Mike Greenwood, Tim N Ziegenfuss, Alan A Aragon, Jose Antonio
The International Society of Sports Nutrition (ISSN) provides an objective and critical review regarding the timing of macronutrients in reference to healthy, exercising adults and in particular highly trained individuals on exercise performance and body composition. The following points summarize the position of the ISSN:Nutrient timing incorporates the use of methodical planning and eating of whole foods, fortified foods and dietary supplements. The timing of energy intake and the ratio of certain ingested macronutrients may enhance recovery and tissue repair, augment muscle protein synthesis (MPS), and improve mood states following high-volume or intense exercise...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28915274/prevalence-of-mind-and-body-exercises-mbe-in-relation-to-demographics-self-rated-health-and-purchases-of-prescribed-psychotropic-drugs-and-analgesics
#13
Lina Rådmark, Linda L Magnusson Hanson, Eva Bojner Horwitz, Walter Osika
This study aims to identify any differences regarding gender, age, socioeconomic status (SES), self-rated health, perceived stress and the purchase of prescribed drugs among people who practice mind and body exercises (MBE) extensively compared to people who do not. METHODS: The study includes 3,913 men and 4,803 women aged 20-72 who participated in the Swedish Longitudinal Occupational Survey of Health (SLOSH). The respondents were divided into three groups depending on frequency of MBE practice (never/seldom/often)...
2017: PloS One
https://www.readbyqxmd.com/read/28912742/perception-action-and-cognition-of-football-referees-in-extreme-temperatures-impact-on-decision-performance
#14
Nadia Gaoua, Rita F de Oliveira, Steve Hunter
Different professional domains require high levels of physical performance alongside fast and accurate decision-making. Construction workers, police officers, firefighters, elite sports men and women, the military and emergency medical professionals are often exposed to hostile environments with limited options for behavioral coping strategies. In this (mini) review we use football refereeing as an example to discuss the combined effect of intense physical activity and extreme temperatures on decision-making and suggest an explicative model...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28912129/the-efficacy-of-unsupervised-home-based-exercise-regimens-in-comparison-to-supervised-laboratory-based-exercise-training-upon-cardio-respiratory-health-facets
#15
James Blackwell, Philip J Atherton, Kenneth Smith, Brett Doleman, John P Williams, Jonathan N Lund, Bethan E Phillips
Supervised high-intensity interval training (HIIT) can rapidly improve cardiorespiratory fitness (CRF). However, the effectiveness of time-efficient unsupervised home-based interventions is unknown. Eighteen volunteers completed either: laboratory-HIIT (L-HIIT); home-HIIT (H-HIIT) or home-isometric hand-grip training (H-IHGT). CRF improved significantly in L-HIIT and H-HIIT groups, with blood pressure improvements in the H-IHGT group only. H-HIIT offers a practical, time-efficient exercise mode to improve CRF, away from the laboratory environment...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28911936/exercise-training-in-patients-with-pulmonary-and-systemic-hypertension-a-unique-therapy-for-two-different-diseases
#16
REVIEW
Massimo Leggio, Augusto Fusco, Giorgio Limongelli, Luca Sgorbini
Pulmonary hypertension is a potentially life-threatening condition. Given its evolving definition, the incidence and prevalence of the disease is difficult to define, but registries suggest an increased global awareness. The management of patients with pulmonary arterial hypertension is highly specialised and requires multi-disciplinary input from a range of healthcare professionals, including cardiologists, respiratory physicians, rheumatologists, rehabilitation physicians and cardio-pulmonary physiotherapists...
September 11, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28910548/time-of-day-effects-of-exposure-to-solar-radiation-on-thermoregulation-during-outdoor-exercise-in-the-heat
#17
Hidenori Otani, Takayuki Goto, Heita Goto, Minayuki Shirato
High solar radiation has been recognised as a contributing factor to exertional heat-related illness in individuals exercising outdoors in the heat. Although solar radiation intensity has been known to have similar time-of-day variation as body temperature, the relationship between fluctuations in solar radiation associated with diurnal change in the angle of sunlight and thermoregulatory responses in individuals exercising outdoors in a hot environment remains largely unknown. The present study therefore investigated the time-of-day effects of variations in solar radiation associated with changing solar elevation angle on thermoregulatory responses during moderate-intensity outdoor exercise in the heat of summer...
September 14, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28910365/acute-effects-of-strength-exercises-and-effects-of-regular-strength-training-on-cell-free-dna-concentrations-in-blood-plasma
#18
Suzan Tug, Anna-Katharina Tross, Patrick Hegen, Elmo Wanja Immanuel Neuberger, Susanne Helmig, Wolfgang Schöllhorn, Perikles Simon
Creatine kinase (CK) is a marker for muscle cell damage with limited potential as marker for training load in strength training. Recent exercise studies identified cell free DNA (cfDNA) as a marker for aseptic inflammation and cell damage. Here we overserved in a pilot study the acute effects during strength exercise and chronic effects of regular strength training on cfDNA concentrations over a period of four weeks in three training groups applying conservation training (CT) at 60% of the 1 repetition maximum, high intensity-low repetition training (HT) at 90% of the 1 repetition maximum and differential training (DT) at 60% of the 1 repetition maximum...
2017: PloS One
https://www.readbyqxmd.com/read/28906347/exercise-induced-bronchoconstriction-with-firefighting-contained-breathing-apparatus
#19
Leigh M Seccombe, Lachlan Buddle, John D Brannan, Matthew J Peters, Claude S Farah
PURPOSE: Protective self-contained breathing apparatus (SCBA) used for firefighting delivers decompressed (cold), dehumidified air that may enhance the severity of exercise-induced bronchoconstriction (EIB) in those susceptible. We investigated the effect of SCBA during exercise on airway caliber in people with asthma and healthy controls. METHODS: Two exercise challenges (EC) designed to elicit EIB were performed on separate days within one week. The initial challenge was breathing room air (ECRA) with workload titrated to elicit >60% estimated maximum voluntary ventilation...
September 12, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28905640/neurobiological-mechanisms-of-exercise-and-psychotherapy-in-depression-the-speed-study-rationale-design-and-methodological-issues
#20
Stephan Heinzel, Michael A Rapp, Thomas Fydrich, Andreas Ströhle, Christina Terán, Gunnar Kallies, Melanie Schwefel, Andreas Heissel
BACKGROUND/AIMS: Even though cognitive behavioral therapy has become a relatively effective treatment for major depressive disorder and cognitive behavioral therapy-related changes of dysfunctional neural activations were shown in recent studies, remission rates still remain at an insufficient level. Therefore, the implementation of effective augmentation strategies is needed. In recent meta-analyses, exercise therapy (especially endurance exercise) was reported to be an effective intervention in major depressive disorder...
September 1, 2017: Clinical Trials: Journal of the Society for Clinical Trials
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