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https://www.readbyqxmd.com/read/28447186/comparison-of-the-recovery-response-from-high-intensity-and-high-volume-resistance-exercise-in-trained-men
#1
Sandro Bartolomei, Eliahu Sadres, David D Church, Eliott Arroyo, Joseph A Gordon Iii, Alyssa N Varanoske, Ran Wang, Kyle S Beyer, Leonardo P Oliveira, Jeffrey R Stout, Jay R Hoffman
PURPOSE: The purpose of this study was to compare the physiological responses of a high-volume (HV; 8 sets of 10 repetitions) versus high-intensity (HI; 8 sets of 3 repetitions) exercise protocol in resistance-trained men. METHODS: Twelve men (24.5 ± 4.2 years; 82.3 ± 8.4 kg; 175.2 ± 5.5 cm) with 6.3 ± 3.4 years of resistance training experience performed each protocol in a counterbalanced, randomized order. Performance [counter movement jump peak power (CMJP), isokinetic (ISOK) and isometric leg extension (MVIC), isometric mid-thigh pull (IMTP), and isometric squat (ISQ)] and muscle morphological [cross-sectional area (CSA) of vastus lateralis] assessments were performed at baseline (BL), 30-min (P-30 min), 24-h (P-24 h), 48-h (P-48 h), and 72-h (P-72 h) post-exercise for each testing session...
April 26, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28446953/neuroprotective-effects-of-exercise-on-brain-edema-and-neurological-movement-disorders-following-the-cerebral-ischemia-and-reperfusion-in-rats
#2
Nabi Shamsaei, Soheila Erfani, Masoud Fereidoni, Ali Shahbazi
INTRODUCTION: Cerebral ischemia and reperfusion causes physiological and biochemical changes in the neuronal cells that will eventually lead to cell damage. Evidence indicates that exercise reduces the ischemia and reperfusion-induced brain damages in animal models of stroke. In the present study, the effect of exercise preconditioning on brain edema and neurological movement disorders following the cerebral ischemia and reperfusion in rats was investigated. METHODS: Twenty-one adult male wistar rats (weighing 260-300 g) were randomly divided into three groups: sham operated, exercise plus ischemia, and ischemia group (7 rats per group)...
January 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/28445505/dominance-of-an-alien-shrub-rhus-typhina-over-a-native-shrub-vitex-negundo-var-heterophylla-under-variable-water-supply-patterns
#3
Ning Du, Xiangfeng Tan, Qiang Li, Xiao Liu, Wenxin Zhang, Renqing Wang, Jian Liu, Weihua Guo
Temporal heterogeneity of a resource supply can have a profound effect on the interactions between alien and native plant species and their potential invasiveness. Precipitation patterns may be variable and result in a higher heterogeneity of water supply with global climate change. In this study, an alien shrub species, Rhus typhina, introduced to China from North America and a native shrub species, Vitex negundo var. heterophylla, were grown in monoculture and mixed culture under different water supply regimes, with four levels of water supply frequencies but with a constant level of total supplied water...
2017: PloS One
https://www.readbyqxmd.com/read/28445490/the-effect-of-swimming-exercise-on-adenine-induced-kidney-disease-in-rats-and-the-influence-of-curcumin-or-lisinopril-thereon
#4
Badreldin H Ali, Turan Karaca, Yousuf Al Suleimani, Mohammed Al Za'abi, Jamila Al Kalbani, Mohammed Ashique, Abderrahim Nemmar
Patients with chronic kidney disease (CKD) have been reported to benefit from different types of exercises. It has also been shown that the ACE inhibitor lisinopril, and the natural product curcumin are also beneficial in different models of CKD in rats. We assessed the influence of moderate swimming exercise (SE) on rats with adenine-induced CKD, and tested the possible effects of lisinopril and/or curcumin thereon using several physiological, biochemical, histopathological and immunohistochemical parameters...
2017: PloS One
https://www.readbyqxmd.com/read/28445226/comparison-of-training-intensity-patterns-for-cardiorespiratory-speed-and-strength-exercise-programs
#5
Rheba E Vetter, Han Yu, Alice K Foose, Peter J Adam, Regan K Dodd
Designing effective exercise training programs is important for novice, regular and elite individuals desiring improvements in physical fitness and performance outcomes without experiencing deleterious physiological or performance effects. The purpose of this research was to understand the impact of training intensity on the effectiveness of training program outcomes. Synthesized analyses of 31 studies provided an overall magnitude for the impact of training program intensity on effect size (ES). Meta-analyses were conducted using meta-regression models to assess the impact of training program intensity and the other moderators of training frequency, training weeks, age, ability level, and type of physical exercise training...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28444488/prophylactic-swallow-therapy-for-patients-with-head-and-neck-cancer-undergoing-chemoradiotherapy-a-randomized-trial
#6
Barbara Pisano Messing, Elizabeth C Ward, Cathy L Lazarus, Melissa Kim, Xian Zhou, Jessica Silinonte, Dorothy Gold, Karen Harrer, Karen Ulmer, Samantha Merritt, Geoffrey Neuner, Marshall Levine, Ray Blanco, John Saunders, Joseph Califano
Evidence supporting prophylactic swallow exercises for patients with head and neck cancer (HNC) has not been universally demonstrated. This RCT examined diet level, feeding tube use, swallow function, and quality of life (QOL) of patients undergoing chemoradiotherapy who performed prophylactic swallowing exercises. Sixty HNC patients were randomized into exercise versus control groups. Swallowing, oromotor, toxicity, and QOL data were recorded (baseline, 3, 6, 12, 24 months). Physiological swallow function was examined at baseline and 3 months...
April 25, 2017: Dysphagia
https://www.readbyqxmd.com/read/28442479/novel-use-of-a-noninvasive-hemodynamic-monitor-in-a-personalized-active-learning-simulation
#7
Jonathan K Zoller, Jianghua He, Angela T Ballew, Walter N Orr, Brigid C Flynn
The present study furthered the concept of simulation-based medical education by applying a personalized active learning component. We tested this novel approach utilizing a noninvasive hemodynamic monitor with the capability to measure and display in real time numerous hemodynamic parameters in the exercising participant. Changes in medical knowledge concerning physiology were examined with a pre-and posttest. Simply by observation of one's own hemodynamic variables, the understanding of complex physiological concepts was significantly enhanced...
June 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28435685/quantification-and-physiological-significance-of-the-rightward-shift-of-the-v-slope-during-incremental-cardiopulmonary-exercise-testing
#8
Hirotaka Nishijima, Kazuo Kondo, Kazuya Yonezawa, Hiroki Hashimoto, Masayuki Sakurai
BACKGROUND: Ventilatory anaerobic threshold (VAT) is frequently used as a measure of exercise tolerance, with the V-slope method being the standard; however, this needs to be visually determined. Over the years, we have observed that the V-slope itself often appears to shift rightward before the appearance of the VAT (RtShift: rightward shift of V-slope). This phenomenon has long been known to occur during the first 1-2 min of steady-state exercise and disappears thereafter; it is attributed to CO2 storage, presumably in active muscle...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28433617/induced-and-controlled-dietary-ketosis-as-a-regulator-of-obesity-and-metabolic-syndrome-pathologies
#9
Madeline K Gibas, Kelly J Gibas
A worsening epidemic of diabetes and its precursor, metabolic syndrome (MetS) is engulfing America. A healthy individual, with proper glucose regulation has an ability to switch between burning fat and carbohydrates. It has been suggested that signaling errors within this homeostatic system, characterized by impaired switching of substrate oxidation from glucose to fat in response to insulin, can contribute to the etiology of metabolic syndrome and occurs before the development of type II diabetes. Glucose regulation with restored insulin sensitivity facilitated through clinically regulated, benign dietary ketosis (BDK), may significantly reduce, regulate and reverse the adverse pathologies common to MetS and obesity...
March 28, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28433478/investigation-on-acute-effects-of-enzyme-replacement-therapy-and-influence-of-clinical-severity-on-physiological-variables-related-to-exercise-tolerance-in-patients-with-late-onset-pompe-disease
#10
Annalisa Sechi, Desy Salvadego, Alessandro Da Ponte, Nicole Bertin, Andrea Dardis, Silvia Cattarossi, Grazia Devigili, Federico Reccardini, Bruno Bembi, Bruno Grassi
Exercise intolerance is one of the clinical hallmarks of late-onset Pompe disease (LOPD). We studied the acute effects of ERT on the physiological variables associated with exercise tolerance in patients chronically ERT treated. Moreover, we assessed the influence of clinical severity on the investigated variables. The day before (B) and the day after (A) ERT injection, 11 LOPD patients performed on a cycle-ergometer an exercise tolerance test to voluntary exhaustion; VO2, HR, RPE, and GAA activity were determined in B and A...
March 10, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28432115/effects-of-exercise-on-vascular-function-structure-and-health-in-humans
#11
Daniel J Green, Kurt J Smith
Physical activity has profound impacts on the vasculature in humans. Acute exercise induces immediate changes in artery function, whereas repeated episodic bouts of exercise induce chronic functional adaptation and, ultimately, structural arterial remodeling. The nature of these changes in function and structure are dependent on the characteristics of the training load and may be modulated by other factors such as exercise-induced inflammation and oxidative stress. The clinical implications of these physiological adaptations are profound...
April 21, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28428736/simple-sugar-supplementation-abrogates-exercise-induced-increase-in-hepcidin-in-young-men
#12
Maja Tomczyk, Jakub Kortas, Damian Flis, Wojciech Skrobot, Rafal Camilleri, Jedrzej Antosiewicz
BACKGROUND: At present many young people experience too much body iron accumulation. The reason of this phenomenon is not clear. There is accumulating evidences that not proper diet and lack of exercise could be a main contributing factors. This investigation assessed the effects of a diet rich in simple sugars (glucose or fructose) on exercise-induced hepcidin which is hormone regulating iron metabolism. METHODS: A group of physically active young men completed an incremental exercise test before and after a 3-day diet supplemented with fructose (4 g/kg BM) or glucose (4 g/kg BM)...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28426779/reference-standards-for-lean-mass-measures-using-ge-dual-energy-x-ray-absorptiometry-in-caucasian-adults
#13
Mary T Imboden, Ann M Swartz, Holmes W Finch, Matthew P Harber, Leonard A Kaminsky
OBJECTIVE: To develop reference values by age and sex for LM measures using GE-Healthcare DXA systems. METHODS: A de-identified sample was obtained from Ball State University's Clinical Exercise Physiology Laboratory and University of Wisconsin-Milwaukee's Physical Activity & Health Research Laboratory. DXA scans of 2,076 women and 1,251 men were completed using a GE Lunar Prodigy or iDXA. Percentiles (%ile) were calculated for all variables of interest (LM, LMI, %LM, and ALMI) and a factorial ANOVA was used to assess differences for each variable between 10-year age groups and sex, as well as the interaction between age and sex...
2017: PloS One
https://www.readbyqxmd.com/read/28424267/using-a-novel-data-resource-to-explore-heart-rate-during-mountain-and-road-running
#14
Andrew Best, Barry Braun
Online, accessible performance and heart rate data from running competitions are posted publicly or semi-publicly to social media. We tested the efficacy of one such data resource- Strava- as a tool in exercise physiology investigations by exploring heart rate differences in mountain racing and road racing running events. Heart rate and GPS pace data were gathered from Strava activities posted by 111 males aged 21-49, from two mountain races (Mt. Washington Road Race and Pike's Peak Ascent) and two road race distances (half marathon and marathon)...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28422851/relation-between-serum-myokines-and-phase-ii-cardiac-rehabilitation
#15
Der-Sheng Han, Ming-Yen Hsiao, Tyng-Guey Wang, Ssu-Yuan Chen, Wei-Shiung Yang
Patients with coronary heart disease or acute myocardial infarction after cardiac catheterization with stenting referred for phase II cardiac rehabilitation (CR) were grouped according to their preference. Cardio-pulmonary exercise testing (CPET) was used to determine oxygen uptake ((Equation is included in full-text article.)) at peak exercise and anaerobic threshold (AT). The control patients received counseling only while the experiment group received 36 sessions of CR in 3 to 6 months. Exercise physiology parameters and serum myokines (myostatin, insulin-like growth factor-1 (IGF-1), and interleukin-6 (IL-6) were measured pre- and postrehabilitation...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28422800/evaluation-of-water-content-in-lumbar-intervertebral-discs-and-facet-joints-before-and-after-physiological-loading-using-t2-mapping-mri
#16
Daisuke Yamabe, Hideki Murakami, Kou Chokan, Hirooki Endo, Ryosuke Oikawa, Shoitsu Sawamura, Minoru Doita
STUDY DESIGN: T2 mapping was used to quantify the water content of lumbar spine intervertebral discs (IVD) and facet joints before and after physiological loading. OBJECTIVE: To clarify the interaction between lumbar spine IVD and facet joints as load-bearing structures by measuring the water content of their matrix after physiological loading using T2 mapping magnetic resonance imaging (MRI). SUMMARY OF BACKGROUND DATA: To date, few reports have functionally evaluated lumbar spine IVD and facet joints, and their interaction in vivo...
April 18, 2017: Spine
https://www.readbyqxmd.com/read/28422539/the-effect-of-nitrate-supplementation-on-cycling-performance-in-the-heat-in-well-trained-cyclists
#17
Joseph A McQuillan, Julia R Casadio, Deborah K Dulson, Paul B Laursen, Andrew E Kilding
PURPOSE: The aim of this study was to determine the effect of NO3(-) consumption on measures of perception, thermoregulation and cycling performance in hot conditions. METHODS: Using a randomised, double-blind, crossover-design, 8 well-trained cyclists (mean ± SD: age: 25 ± 8 y, V̇O2peak: 64 ± 5 ml·kg(-1)·min(-1)) performed 2 separate trials, in hot (35°C, 60% relative humidity) environments, having ingested either 140 ml NO3(-)-rich beetroot juice ~8 mmol NO3(-) (NIT), or placebo (PLA), daily for 3-days with a 7-day washout period separating trials...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28422525/soccer-match-play-represents-an-important-component-of-the-power-training-stimulus-in-premier-league-players
#18
Ryland Morgans, Rocco Di Michele, Barry Drust
PURPOSE: Competitive match-play is a dominant component of the physical load completed by soccer players within a training micro-cycle. Characterising the temporal disruption in homeostasis that follows exercise may provide some insight into the potential for match-play to elicit an adaptive response. METHODS: Countermovement jump (CMJ) performance was characterised 3 days post-match for 15 outfield players from an English Premier League soccer team (age: 25.8 ± 4...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28421126/femoral-neck-strain-during-maximal-contraction-of-isolated-hip-spanning-muscle-groups
#19
Saulo Martelli
The aim of the study was to investigate femoral neck strain during maximal isometric contraction of the hip-spanning muscles. The musculoskeletal and the femur finite-element models from an elderly white woman were taken from earlier studies. The hip-spanning muscles were grouped by function in six hip-spanning muscle groups. The peak hip and knee moments in the model were matched to corresponding published measurements of the hip and knee moments during maximal isometric exercises about the hip and the knee in elderly participants...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28419001/new-insights-into-the-impact-of-dehydration-on-blood-flow-and-metabolism-during-exercise
#20
Steven J Trangmar, José González-Alonso
Exercise-induced dehydration can lead to impaired perfusion to multiple regional tissues and organs. We propose that the impact of dehydration on regional blood flow and metabolism is dependent on the extent of the cardiovascular demand imposed by exercise, with the greatest physiological strain seen when approaching cardiovascular and aerobic capacities.
April 17, 2017: Exercise and Sport Sciences Reviews
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