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RER performance

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https://www.readbyqxmd.com/read/29285135/omeprazole-preserves-the-rer-in-chief-cells-and-enhances-re-epithelialization-of-parietal-cells-with-sod-and-aqp-4-up-regulation-in-ethanol-induced-gastritis-rats
#1
Kanchana Kengkoom, Napatara Tirawanchai, Wannee Angkhasirisap, Sumate Ampawong
Gastric mucosal cells, particularly parietal and chief cells, are usually affected by exogenous, and endogenous stimuli-induced gastritis. The integrity of these cells and their alterations are involved in the pathogenesis of numerous gastric disorders. Omeprazole, a gastric acid secretion blocker, is commonly used for gastrointestinal diseases due to its antioxidative stress and anti-inflammatory properties. Little is known regarding how omeprazole modulates the re-epithelialized effect on gastric mucosal cells associated with gastrointestinal disorders...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29248234/technical-note-near-infrared-reflectance-spectroscopy-to-predict-fecal-indigestible-neutral-detergent-fiber-for-dairy-cows
#2
N Brogna, A Palmonari, G Canestrari, L Mammi, A Dal Prà, A Formigoni
In vitro and in situ procedures performed to estimate indigestible neutral detergent fiber (iNDF) in forage or fecal samples are time consuming, costly, and limited by intrinsic factors. In contrast, near infrared reflectance spectroscopy (NIRS) has become widely recognized as a valuable tool for accurately determining chemical composition and digestibility parameters of forages. The aim of this study was to build NIRS calibrations and equations for fecal iNDF. In total, 1,281 fecal samples were collected to build a calibration data set, but only 301 were used to develop equations...
December 13, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29189667/repeatability-and-meaningful-change-of-cpet-parameters-in-normal-subjects
#3
Thomas W DeCato, Sean M Bradley, Emily L Wilson, Matthew J Hegewald
INTRODUCTION/PURPOSE: Cardiopulmonary exercise testing (CPET) plays an important role in clinical medicine and research. Repeatability of CPET parameters has not been well characterized, but is important to assess variability and determine if there have been meaningful changes in a given CPET parameter. METHODS: We recruited 45 healthy subjects and performed two symptom-limited CPETs within 30 days using a cycle ergometer. Differences in relevant CPET parameters between CPET-1 and CPET-2 were assessed using a paired t-test...
November 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29170704/a-pre-exercise-dose-of-melatonin-can-alter-substrate-use-during-exercise
#4
Cardyl P Trionfante, Greggory R Davis, Tyler M Farney, Ryan W Miskowiec, Arnold G Nelson
Notwithstanding the lack of exercise research, several reviews have championed the use of melatonin to combat metabolic syndrome. Therefore, this study compared substrate utilization during a 30-minute (min) graded exercise protocol following the ingestion of either 6 mg melatonin (M) or a placebo (P). Participants (12 women, 12 men) performed stages 1-5 of the Naughton graded exercise protocol (6 min per stage). The protocol was repeated 4 times (2x M, 2x P) at the same time of day with one week separating each session...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/29148627/assessment-of-endpoint-criteria-and-perceived-barriers-during-maximal-cardiorespiratory-fitness-testing-among-pregnant-women
#5
Caitlin M Hesse, Rachel A Tinius, Bailey J Cooley, Alyssa A Olenick, Maire M Blankenship, Donald L Hoover, Jill M Maples
BACKGROUND: A plateau in volume of oxygen consumption (VO2) is the primary indicator for determining if an individual has reached their maximal aerobic capacity. However, secondary criteria can also be used to identify maximal effort (i.e. lactate level, rating of perceived exertion (RPE), percent of age-predicted maximal heart rate (HR) and respiratory exchange ratio (RER)). Age and gender-specific secondary criteria have been developed for the general population, but no secondary criteria have been established for pregnant women...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29078353/mutagenic-cost-of-ribonucleotides-in-bacterial-dna
#6
Jeremy W Schroeder, Justin R Randall, William G Hirst, Michael E O'Donnell, Lyle A Simmons
Replicative DNA polymerases misincorporate ribonucleoside triphosphates (rNTPs) into DNA approximately once every 2,000 base pairs synthesized. Ribonucleotide excision repair (RER) removes ribonucleoside monophosphates (rNMPs) from genomic DNA, replacing the error with the appropriate deoxyribonucleoside triphosphate (dNTP). Ribonucleotides represent a major threat to genome integrity with the potential to cause strand breaks. Furthermore, it has been shown in the bacterium Bacillus subtilis that loss of RER increases spontaneous mutagenesis...
October 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29071088/stair-ascending-descending-exercise-accelerates-the-decrease-in-postprandial-hyperglycemia-more-efficiently-than-bicycle-exercise
#7
Tetsuo Takaishi, Tatsuya Hayashi
OBJECTIVE: Stair climbing-descending exercise (ST-EX) is a convenient method to increase exercise intensity. We compared the acute effect of ST-EX on lowering postprandial hyperglycemia with that of constant bicycle exercise (BI-EX) performed at the same heart rate (HR). RESEARCH DESIGN AND METHODS: Seven people with type 2 diabetes and seven with impaired glucose tolerance volunteered for this study. The step rate for ST-EX and work rate for BI-EX were individually determined to correspond to high-moderate to low-vigorous intensity (HR ~130 beats per minute)...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/28921536/technical-note-a-simulation-study-on-the-feasibility-of-radiotherapy-dose-enhancement-with-calcium-tungstate-and-hafnium-oxide-nano-and-microparticles
#8
Nicholas J Sherck, You-Yeon Won
PURPOSE: To assess the radiotherapy dose enhancement (RDE) potential of calcium tungstate (CaWO4 ) and hafnium oxide (HfO2 ) nano- and microparticles (NPs). A Monte Carlo simulation study was conducted to gauge their respective RDE potentials relative to that of the broadly studied gold (Au) NP. The study was warranted due to the promising clinical and preclinical studies involving both CaWO4 and HfO2 NPs as RDE agents in the treatment of various types of cancers. The study provides a baseline RDE to which future experimental RDE trends can be compared to...
September 18, 2017: Medical Physics
https://www.readbyqxmd.com/read/28913348/the-use-of-partial-least-square-regression-and-spectral-data-in-uv-visible-region-for-quantification-of-adulteration-in-indonesian-palm-civet-coffee
#9
Diding Suhandy, Meinilwita Yulia
Asian palm civet coffee or kopi luwak (Indonesian words for coffee and palm civet) is well known as the world's priciest and rarest coffee. To protect the authenticity of luwak coffee and protect consumer from luwak coffee adulteration, it is very important to develop a robust and simple method for determining the adulteration of luwak coffee. In this research, the use of UV-Visible spectra combined with PLSR was evaluated to establish rapid and simple methods for quantification of adulteration in luwak-arabica coffee blend...
2017: International Journal of Food Science
https://www.readbyqxmd.com/read/28912726/cardiovascular-and-muscular-consequences-of-work-matched-interval-type-of-concentric-and-eccentric-pedaling-exercise-on-a-soft-robot
#10
Martin Flück, Rebekka Bosshard, Max Lungarella
Eccentric types of endurance exercise are an acknowledged alternative to conventional concentric types of exercise rehabilitation for the cardiac patient, because they reduce cardiorespiratory strain due to a lower metabolic cost of producing an equivalent mechanical output. The former contention has not been tested in a power- and work-matched situation of interval-type exercise under identical conditions because concentric and eccentric types of exercise pose specific demands on the exercise machinery, which are not fulfilled in current practice...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28825967/dietary-acid-load-and-renal-function-have-varying-effects-on-blood-acid-base-status-and-exercise-performance-across-age-and-sex
#11
Enni-Maria Hietavala, Jeffrey R Stout, Lynda A Frassetto, Risto Puurtinen, Hannu Pitkänen, Harri Selänne, Harri Suominen, Antti A Mero
Diet composition influences acid-base status of the body. This may become more relevant as renal functional capacity declines with aging. We examined the effects of low (LD) versus high dietary acid load (HD) on blood acid-base status and exercise performance. Participants included 22 adolescents, 33 young adults (YA), and 33 elderly (EL), who followed a 7-day LD and HD in a randomized order. At the end of both diet periods the subjects performed a cycle ergometer test (3 × 10 min at 35%, 55%, 75%, and (except EL) until exhaustion at 100% of maximal oxygen uptake)...
August 21, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28750585/nutritional-ketone-salts-increase-fat-oxidation-but-impair-high-intensity-exercise-performance-in-healthy-adult-males
#12
Trevor O'Malley, Etienne Myette-Cote, Cody Durrer, Jonathan P Little
This study investigated the impact of raising plasma beta-hydroxybutyrate (β-OHB) through ingestion of ketone salts on substrate oxidation and performance during cycling exercise. Ten healthy adult males (age, 23 ± 3 years; body mass index, 25 ± 3 kg/m2, peak oxygen uptake, 45 ± 10 mL/(kg·min)-1) were recruited to complete 2 experimental trials. Before enrollment in the experimental conditions, baseline anthropometrics and cardiorespiratory fitness (peak oxygen uptake) were assessed and familiarization to the study protocol was provided...
October 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28730728/beneficial-long-term-antidiabetic-actions-of-n-and-c-terminally-modified-analogues-of-apelin-13-in-diet-induced-obese-diabetic-mice
#13
Vadivel Parthsarathy, Christopher Hogg, Peter R Flatt, Finbarr P M O'Harte
AIMS: To investigate the chronic effects of twice-daily administration of stable apelin analogues, apelin-13 amide and pyroglutamyl (pGlu) apelin-13 amide, on metabolic variables in glucose-intolerant and insulin-resistant diet-induced obese mice fed a high-fat diet for 150 days. METHODS: Groups of mice received twice-daily (9 am and 5 pm) injections of saline vehicle, apelin-13 amide, (pGlu)apelin-13 amide or exendin-4(1-39) for 28 days (all at 25 nmol/kg)...
July 20, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28704881/cardiovascular-and-autonomic-responses-to-a-maximal-exercise-test-in-elite-youngsters
#14
Cristina Blasco-Lafarga, Borja Camarena, Manuel Mateo-March
To analyze cardiovascular and autonomic responses in elite youngsters, 13 male cyclists (15.43±0.51 years) performed a graded-test until voluntary exhaustion. Oxygen consumption (VO2), blood lactate (BLa), arterial oxygen saturation (SaO2), respiratory exchange ratio (RER) and rating of perceived exertion (RPE) were collected, while heart rate (HR) was registered for heart rate variability (HRV) analyses, looking for linear and nonlinear comparisons. Cyclists reached maximal exertion [RPE: 19.14±0.94; BLa: 8...
September 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28674606/comparison-of-ventilatory-measures-and-20-km-time-trial-performance
#15
Willard W Peveler, Brandy Shew, Samantha Johnson, Gabe Sanders, Roger Kollock
Performance threshold measures are used to predict cycling performance. Previous research has focused on long time trials (≥ 40 km) using power at ventilatory threshold and respiratory threshold to estimate time trial performance. As intensity greatly differs during shorter time trails applying findings from longer time trials may not be appropriate. The use of heart rate measures to determine 20 km time trial performance has yet to be examined. The purpose of this study was to determine the effectiveness of heart rate measures at ventilatory threshold (VE/VO2 Plotted and VT determined by software) and respiratory threshold (RER of 0...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674605/changes-in-running-economy-respiratory-exchange-ratio-and-vo2max-in-runners-following-a-10-day-altitude-training-camp
#16
Sebastian R Diebel, Ian Newhouse, David S Thompson, Vineet B K Johnson
Running economy (RE) and VO2max are important predictors of endurance performance for elite and semi-elite endurance athletes, with RE being an appropriate predictor in a homogenous running population. Altitude training has been observed to change RE (mL.kg(-1).min(-1)), and VO2max due to alterations resulting from acclimatization. This study tracked changes in RE and VO2max before and after a 10-day altitude training camp at 1828 meters. VO2max, RE expressed calorically, and respiratory exchange ratio (RER), were measured below anaerobic threshold (AT) to observe differences between pre-and post-altitude training...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28674596/effects-of-nasal-or-oral-breathing-on-anaerobic-power-output-and-metabolic-responses
#17
Christine Recinto, Theodore Efthemeou, P Tony Boffelli, James W Navalta
Nasal and oral exclusive breathing modes have benefits and drawbacks during submaximal exercise. It is unknown whether these responses would extend to anaerobic work performed at high intensity. Nine individuals (males N = 7, females N = 2) performed a standard Wingate Anaerobic cycle test on a cycle ergometer under nose (N) and mouth (M) only respiratory conditions, performed in a counterbalanced order. A 2 (condition: nose, mouth) × 6 (time: 0-5 sec, 5-10 sec, 10-15 sec, 15-20 sec, 20-25 sec, 25-30 sec) repeated measures ANOVA was used to analyze the data with significance accepted at the p<0...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28667897/rate-of-force-development-and-muscle-activation-of-trunk-muscles-in%C3%A2-women-with-and-without-low-back-pain-a-case-control-study
#18
Denise Martineli Rossi, Mary Hellen Morcelli, Adalgiso Coscrato Cardozo, Benedito Sérgio Denadai, Mauro Gonçalves, Marcelo Tavella Navega
OBJECTIVE: To evaluate the rate of force development (RFD) and the rate of electromyography rise (RER) of global and local trunk muscles in women with and without low back pain. DESIGN: Cross-sectional study. SETTING: Laboratory setting. PARTICIPANTS: Twenty-eight women divided into low back pain (LBP, n = 14) and control groups (CG, n = 14) participated in this study. MAIN OUTCOME MEASURES: Subjects performed isometric contractions of trunk using an isokinetic dynamometer, and simultaneously the electromyography (EMG) signals were collected for global (rectus abdominis and longissimus thoracic) and local (internal oblique and multifidus) muscles...
July 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28630575/acute-and-post-exercise-physiological-responses-to-high-intensity-interval-training-in-endurance-and-sprint-athletes
#19
Lukas Cipryan, Gerhard Tschakert, Peter Hofmann
The purpose of the presented study was to compare acute and post-exercise differences in cardiorespiratory, metabolic, cardiac autonomic, inflammatory and muscle damage responses to high-intensity interval exercise (HIIT) between endurance and sprint athletes. The study group consisted of sixteen highly-trained males (age 22.1 ± 2.5 years) participating in endurance (n = 8) or sprint (n = 8) sporting events. All the participants underwent three exercise sessions: short HIIT (work interval duration 30s), long HIIT (3min) and constant load exercise (CE)...
June 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28623713/indirect-sinusoidal-vibrations-induces-an-acute-increase-in-explosive-strength
#20
Leandro V de Paula, Pedro V S Moreira, Rudolf Huebner, Leszek A Szmuchrowski
The purpose of this study was to examine the acute effect of indirect vibration on neuromuscular responses and fatigue resistance (electromyographic activity - EMG and force) during isometric exercise. Nineteen healthy men (age=22.4±2.7years; body mass=76.4±12.9kg, height=175±6.7cm) performed isometric elbow flexion exercises in three experimental treatments: only isometric exercise (control - CON); isometric exercise with the addition of sinusoidal vibrations (SVE1; frequency=20Hz, displacement=3.55±0...
August 2017: Journal of Electromyography and Kinesiology
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