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https://www.readbyqxmd.com/read/29341891/long-term-treadmill-exercise-improves-memory-impairment-through-restoration-of-decreased-synaptic-adhesion-molecule-1-2-3-induced-by-transient-cerebral-ischemia-in-the-aged-gerbil-hippocampus
#1
Ji Hyeon Ahn, Joon Ha Park, Jinseu Park, Myoung Cheol Shin, Jun Hwi Cho, In Hye Kim, Jeong-Hwi Cho, Tae-Kyeong Lee, Jae-Chul Lee, Bich Na Shin, Young-Myeong Kim, Choong Hyun Lee, In Koo Hwang, Il Jun Kang, Bai Hui Chen, Bing Chun Yan, Young Joo Lee, Moo-Ho Won, Soo Young Choi
Exercise improves cognitive impairments induced by transient cerebral ischemia and modulates synaptic adhesion molecules. In this study, we investigated effects of long-term treadmill exercise on cognitive impairments and its relation to changes of synaptic cell adhesion molecule (SynCAM) 1/2/3 in the hippocampus after 5 min of transient cerebral ischemia in aged gerbils. Animals were assigned to sedentary and exercised groups, given treadmill exercise for 4 consecutive weeks from 5 days after transient ischemia and evaluated cognitive function through passive avoidance test and Morris water maze test...
January 13, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29340527/cardiac-protein-expression-patterns-are-associated-with-distinct-inborn-exercise-capacity-in-non-selectively-bred-rats
#2
L P Ribeiro, L C Freitas-Lima, G B Naumann, S S Meyrelles, W Lunz, S F Pires, H M Andrade, J B T Carnielli, S G Figueiredo
In the present study, we successfully demonstrated for the first time the existence of cardiac proteomic differences between non-selectively bred rats with distinct intrinsic exercise capacities. A proteomic approach based on two-dimensional gel electrophoresis coupled to mass spectrometry was used to study the left ventricle (LV) tissue proteome of rats with distinct intrinsic exercise capacity. Low running performance (LRP) and high running performance (HRP) rats were categorized by a treadmill exercise test, according to distance run to exhaustion...
January 11, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29340005/comparison-of-aerobic-performance-testing-protocols-in-elite-male-wheelchair-basketball-players
#3
Bartosz Molik, Andrzej Kosmol, Natalia Morgulec-Adamowicz, Judit Lencse-Mucha, Anna Mróz, Karol Gryko, Jolanta Marszałek
In wheelchair sports, aerobic performance is commonly assessed with the use of an arm crank ergometer (ACE), a wheelchair ergometer (WCE) or a wheelchair treadmill (WCT). There are different protocols to identify peak oxygen uptake in wheelchair sports; however, only a few protocols have been applied to evaluate these conditions in wheelchair basketball players. The purpose of this study was to compare physiological responses during maximal exercise testing with the use of ACE and WCT in wheelchair basketball players...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29337831/the-acute-effects-of-a-caffeine-containing-supplement-on-anaerobic-power-and-subjective-measurements-of-fatigue-in-recreationally-active-males
#4
Chelsea J Hahn, Andrew R Jagim, Clayton L Camic, Matthew J Andre
Studies show mixed results for the effects of caffeine on performance, warranting further investigation. The purpose of this study was to examine the acute effects of a caffeine-containing supplement on anaerobic power and subjective measurements of fatigue during resisted sprinting on males. Fourteen recreationally-active males [N=14; (mean±SD), age: 21.0±0.7 yrs., height: 178.5±5.1 cm, weight: 77.3±9.6 kg, percent body fat: 12.6±4.8%] participated in a double-blind, placebo controlled, within-subjects crossover design study...
January 4, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29334615/hemodynamic-and-metabolic-responses-to-self-paced-and-ramp-graded-exercise-testing-protocols
#5
Nicholas M Beltz, Fabiano Amorim, Ann L Gibson, Jeffrey M Janot, Len Kravitz, Christine M Mermier, Nathan Cole, Terence A Moriarty, Tony P Nunez, Sam Trigg, Lance Dalleck
PURPOSE: Recent examinations have shown lower maximal oxygen uptake (VO2max) during traditional ramp (RAMP) compared to self-paced (SPV) graded exercise testing (GXT) attributed to differences in cardiac ouput. The current study examined the differences in hemodyamic and metabolic responses between RAMP and SPV during treadmill exercise. METHODS: Sixteen recreationally trained men (23.7±3.0 yrs) completed two separate treadmill GXT protocols. SPV consisted of five 2-min stages (10 min total) of increasing speed clamped by the Borg RPE6-20 scale...
January 15, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29334614/perceptions-of-exercise-screening-among-older-adults
#6
Liza Stathokostas, Andrea F M Petrella, Wendy Blunt, Robert J Petrella
BACKGROUND: Pre-physical activity screening is important for older adults' participating in physical activity. Unfortunately, many older adults face barriers to exercise participation and thus, may not complete proper physical activity screening. The purpose of this project was to conduct a thematic analysis of perceptions and experiences of community-dwelling older adults regarding pre-physical activity screening (i.e., Get Active Questionnaire (GAQ) and a standardized exercise stress test)...
January 15, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29326902/low-intensity-training-provokes-adaptive-extracellular-matrix-turnover-of-a-muscular-dystrophy-model
#7
Thaís P Gaiad, Murilo X Oliveira, Adalfredo R Lobo, Lívia R Libório, Priscilla A F Pinto, Danielle C Fernandes, Ana Paula Santos, Carlos Eduardo Ambrósio, Alex Sander D Machado
Recommendations of therapeutic exercise in Duchenne muscular dystrophy are still controversial. The hypothesis that a low-intensity training (LIT) protocol leads to muscle adaptations on mdx mice model was tested. Dystrophic male mice with 8 weeks old were separated in exercised (mdxE, n= 8) and sedentary (mdxC, n= 8) groups. Wild-type mice were used as control (WT, n= 8) group. Exercised group underwent a LIT protocol (9 m/min, 30 min, 3 days/wk, 60 days) on a horizontal treadmill. At day 60 all animals were analyzed regarding parameters of markers of muscle lesion and extracellular matrix turnover of muscle tissue by collagens fibers on tibial anterior muscle...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29326895/effects-of-walking-with-hand-held-weights-on-energy-expenditure-and-excess-postexercise-oxygen-consumption
#8
Catherine T Campaña, Pablo B Costa
Walking is not only important to assist in performing daily tasks, but also to gain cardiovascular benefits. Further research on walking is needed to examine the physiological responses to improve health and reduce the risks of cardiovascular disease. The purpose of this study was to compare the energy expenditure (EE) during and after walking exercise with versus without hand-held weights (HHW). Nineteen sedentary women (mean±standard deviation; age, 21±2.7 years, height, 163.1±6.3 cm; body mass, 66.6± 15...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29326893/treadmill-exercise-ameliorates-social-isolation-induced-depression-through-neuronal-generation-in-rat-pups
#9
Jung-Wan Cho, Sun-Young Jung, Sang-Won Lee, Sam-Jun Lee, Tae-Beom Seo, Young-Pyo Kim, Dae-Young Kim
Social isolation is known to induce emotional and behavioral changes in animals and humans. The effect of treadmill exercise on depression was investigated using social isolated rat pups. The rat pups in the social isolation groups were housed individually. The rat pups in the exercise groups were forced to run on treadmill for 30 min once a day from postnatal day 21 to postnatal day 34. In order to evaluate depression state of rat pups, forced swimming test was performed. Newly generated cells in the hippocampal dentate gyrus were determined by 5-bromo-2'-deoxyuridine (BrdU) immunohistochemistry...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29325839/the-effect-of-low-load-exercise-on-joint-pain-function-and-activities-of-daily-living-in-patients-with-knee-osteoarthritis
#10
Jason Peeler, Jacquie Ripat
BACKGROUND: Knee osteoarthritis has a lifetime risk of nearly one in two, with obese individuals being most susceptible. While exercise is universally recognized as a critical component for management, unsafe or ineffective exercise frequently leads to exacerbation of joint symptoms. AIM: Evaluate the effect of a 12week lower body positive pressure (LBPP) supported low-load treadmill walking program on knee pain, joint function, and performance of daily activities in patients with knee osteoarthritis (OA)...
January 8, 2018: Knee
https://www.readbyqxmd.com/read/29324580/the-relationship-between-skating-economy-and-performance-during-a-repeated-shift-test-in-elite-and-sub-elite-ice-hockey-players
#11
Nicholas R Lamoureux, Grant R Tomkinson, Benjamin J Peterson, John S Fitzgerald
The purpose of this study was to determine the importance of skating economy to fatigue during repeated high-intensity efforts of a simulated ice hockey shift. Forty-five collegiate and Junior A male ice hockey players (aged 18-24 years) performed a continuous graded exercise test using a skate treadmill. Breath-by-breath data for oxygen consumption (V[Combining Dot Above]O2) and respiratory exchange ratio were collected and used to derive energy expenditure (EE) averaged over the final 10 seconds of each stage...
January 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29321559/the-role-of-parafacial-neurons-in-the-control-of-breathing-during-exercise
#12
Alla Korsak, Shahriar Sheikhbahaei, Asif Machhada, Alexander V Gourine, Robert T R Huckstepp
Neuronal cell groups residing within the retrotrapezoid nucleus (RTN) and C1 area of the rostral ventrolateral medulla oblongata contribute to the maintenance of resting respiratory activity and arterial blood pressure, and play an important role in the development of cardiorespiratory responses to metabolic challenges (such as hypercapnia and hypoxia). In rats, acute silencing of neurons within the parafacial region which includes the RTN and the rostral aspect of the C1 circuit (pFRTN/C1), transduced to express HM4D (Gi-coupled) receptors, was found to dramatically reduce exercise capacity (by 60%), determined by an intensity controlled treadmill running test...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29319584/physiological-responses-to-overdressing-and-exercise-heat-stress-in-trained-runners
#13
Brett R Ely, Laurie A Blanchard, Jared R Steele, Michael A Francisco, Samuel N Cheuvront, Christopher T Minson
Heat acclimation is the best strategy to improve performance in a hot environment. Many athletes seeking the benefits of heat acclimation lack access to a hot environment for exercise, and thus rely on over-dressing to simulate environmental heat stress. It is currently unknown whether this approach produces the requisite thermoregulatory strain necessary for heat acclimation in trained men and women. PURPOSE: To compare physiological and cellular responses to exercise in a hot environment (HOT; 40°C, 30%rh) with minimal clothing (clo= 0...
January 9, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29318030/environmental-temperature-and-exercise-modality-independently-impact-central-and-muscle-fatigue-among-people-with-multiple-sclerosis
#14
Geetika Grover, Michelle Ploughman, Devin T Philpott, Liam P Kelly, Augustine J Devasahayam, Katie Wadden, Kevin E Power, Duane C Button
Background: Heat sensitivity and fatigue limit the ability of multiple sclerosis patients to participate in exercise. Objective: The purpose of this study was to determine the optimal aerobic exercise parameters (environmental temperature and exercise modality) to limit exercise-induced central and muscle fatigue among people with multiple sclerosis. Methods: Fourteen people with multiple sclerosis with varying levels of disability completed four randomized exercise sessions at 65% of the maximal volume of oxygen: body-weight supported treadmill cool (16°C), body-weight supported treadmill room (21°C), total-body recumbent stepper cool and total-body recumbent stepper room...
October 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/29316316/serum-but-not-exhaled-breath-condensate-periostin-level-is-increased-in-competitive-athletes
#15
Marcin Kurowski, Janusz Jurczyk, Marzanna Jarzębska, Aleksandra Wardzyńska, Hubert Krysztofiak, Marek L Kowalski
INTRODUCTION: Periostin is a matricellular protein expressed by many tissues. Its release may be enhanced, among others, through mechanical stimulation of muscles and bones as well as by cytokines of allergic inflammation. OBJECTIVES: Our aim was to assess periostin levels in serum and exhaled breath condensate (EBC) of professional athletes, asthmatics and healthy controls. We also sought to determine whether acute treadmill exercise influences serum and EBC periostin...
January 8, 2018: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29315579/muscle-molecular-adaptations-to-endurance-exercise-training-are-conditioned-by-glycogen-availability-a-proteomics-based-analysis-in-the-mcardle-mouse-model
#16
Carmen Fiuza-Luces, Alejandro Santos-Lozano, Francisco Llavero, Rocío Campo, Gisela Nogales-Gadea, Jorge Díez Bermejo, Carlos Balandrón, África González-Murillo, Joaquín Arenas, Miguel A Martín, Antoni L Andreu, Tomàs Pinós, Beatriz G Gálvez, Juan A López, Jesús Vázquez, José L Zugaza, Alejandro Lucia
McArdle disease is an inborn disorder of skeletal muscle glycogen metabolism that results in blockade of glycogen breakdown due to mutations in the myophosphorylase gene. We recently developed a mouse model carrying the homozygous p.R50X common human mutation (McArdle mouse), facilitating the study of how glycogen availability affects muscle molecular adaptations to endurance exercise training. Using quantitative differential analysis by liquid chromatography with tandem-mass spectrometry, we analysed the quadriceps muscle proteome of 16-week-old McArdle (n = 5) and wild-type (WT) (n = 4) mice previously subjected to 8-week moderate-intensity treadmill training or to an equivalent control (no training) period...
January 7, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29315168/novel-methods-for-reporting-of-exercise-dose-and-adherence-an-exploratory-analysis
#17
Tormod S Nilsen, Jessica M Scott, Meghan Michalski, Catherine Capaci, Samantha Thomas, James E Herndonx, John Sasso, Neil D Eves, Lee W Jones
PURPOSE: To explore whether methods adapted from oncology pharmacological trials have utility in reporting adherence (tolerability) of exercise treatment in cancer. METHODS: Using a retrospective analysis of a randomized trial, 25 prostate cancer patients received an aerobic training regimen of 72 supervised treadmill walking sessions delivered thrice-weekly between 55% to 100% of exercise capacity for 24 consecutive weeks. Treatment adherence (tolerability) was assessed using conventional (lost to follow up (LTF) and attendance) and exploratory [e...
January 8, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29314646/right-ventricular-contractile-reserve-in-tetralogy-of-fallot-patients-with-pulmonary-regurgitation
#18
Clotilde Kingsley, Saad Ahmad, John Pappachan, Sujata Khambekar, Thomas Smith, Diane Gardiner, James Shambrook, Shankar Baskar, Ryan Moore, Gruschen Veldtman
BACKGROUND: The right ventricular (RV) contractile reserve is a measure of the dynamic function of the RV and is a sensitive indicator of volume load. This can be measured noninvasively using the tricuspid annular plane systolic excursion (TAPSE) during exercise. We studied the RV contractile reserve of patients after tetralogy of Fallot (TOF) repair with varying degree of RV dilation and pulmonary regurgitation (PR), and compared them to a control group. METHODS: Twenty-six patients who had undergone TOF repair (mean age 29 ± 10 years) were identified and stratified into three group based on the presence and severity of RV dilation and PR...
January 5, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29311763/the-acute-effects-of-a-multi-ingredient-pre-workout-supplement-on-resting-energy-expenditure-and-exercise-performance-in-recreationally-active-females
#19
Michael Cameron, Clayton L Camic, Scott Doberstein, Jacob L Erickson, Andrew R Jagim
Background: The use of dietary supplements to improve performance is becoming increasingly popular among athletes and fitness enthusiasts. Unfortunately, there is a tremendous lack of research being done regarding female athletes and the use of sport supplements. The purpose of this study was to examine the acute effects of multi-ingredient pre-workout supplement (MIPS) ingestion on resting metabolism and exercise performance in recreationally-active females. Methods: Fifteen recreationally-active females participated in a randomized, double-blind, placebo controlled study...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29310598/assessing-cardiovascular-risk-in-chronic-kidney-disease-patients-prior-to-kidney-transplantation-clinical-usefulness-of-a-standardised-cardiovascular-assessment-protocol
#20
Robin Ramphul, Maria Fernandez, Sam Firoozi, Juan C Kaski, Rajan Sharma, Debasish Banerjee
BACKGROUND: Despite pre-kidney-transplant cardiovascular (CV) assessment being routine care to minimise perioperative risk, the utility of such assessment is not well established. The study reviewed the evaluation and outcome of a standardised CV assessment protocol. METHODS: Data were analysed for 231 patients (age 53.4 ± 12.9 years, diabetes 34.6%) referred for kidney transplantation between 1/2/2012-31/12/2014. One hundred forty-three patients were high-risk (age > 60 years, diabetes, CV disease, heart failure, peripheral vascular disease) and offered dobutamine stress echocardiography (DSE); 88 patients were low-risk and offered ECG and echocardiography with/without exercise treadmill test...
January 8, 2018: BMC Nephrology
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