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https://www.readbyqxmd.com/read/28727846/effects-of-high-intensity-interval-versus-mild-intensity-endurance-training-on-metabolic-phenotype-and-corticosterone-response-in-rats-fed-a-high-fat-or-control-diet
#1
Youqing Shen, Guoyuan Huang, Bryan P McCormick, Tao Song, Xiangfeng Xu
The aim of the present study was to compare the effects of high-intensity interval training (HI) to mild-intensity endurance training (ME), combined with a high-fat diet (HFD) or control diet (CD) on metabolic phenotype and corticosterone levels in rats. Fifty-three rats were randomized to 6 groups according to diet and training regimen as follows: CD and sedentary (CS, n = 11), CD and ME (CME, n = 8), CD and HI (CHI, n = 8), HFD and sedentary (HS, n = 10), HFD and ME (HME, n = 8), and HFD and HI (HHI, n = 8)...
2017: PloS One
https://www.readbyqxmd.com/read/28727771/randomized-controlled-trial-on-the-effects-of-a-supervised-high-intensity-exercise-program-in-patients-with-a-hematologic-malignancy-treated-with-autologous-stem-cell-transplantation-results-from-the-exist-study
#2
Saskia Persoon, Mai J M ChinAPaw, Laurien M Buffart, Roberto D K Liu, Pierre Wijermans, Harry R Koene, Monique C Minnema, Pieternella J Lugtenburg, Erik W A Marijt, Johannes Brug, Frans Nollet, Marie José Kersten
BACKGROUND: This single blind, multicenter randomized controlled trial aimed to evaluate the effectiveness of a supervised high intensity exercise program on physical fitness and fatigue in patients with multiple myeloma or lymphoma recently treated with autologous stem cell transplantation. METHODS: 109 patients were randomly assigned to the 18-week exercise intervention or the usual care control group. The primary outcomes included physical fitness (VO2peak and Wpeak determined using a cardiopulmonary exercise test; grip strength and the 30s chair stand test) and fatigue (Multidimensional Fatigue Inventory) and were assessed prior to randomization and after completion of the intervention or at similar time points for the control group...
2017: PloS One
https://www.readbyqxmd.com/read/28723843/no-superior-adaptations-to-carbohydrate-periodization-in-elite-endurance-athletes
#3
Kasper Degn Gejl, Line Thams, Mette Hansen, Torben Rokkedal-Lausch, Peter Plomgaard, Lars Nybo, Filip J Larsen, Daniele A Cardinale, Kurt Jensen, Hans-Christer Holmberg, Kristian Vissing, Niels Ørtenblad
PURPOSE: The present study investigated the effects of periodic CHO restriction on endurance performance and metabolic markers in elite endurance athletes. METHODS: Twenty-six male elite endurance athletes (VO2max: 65.0 ml O2[BULLET OPERATOR]kg[BULLET OPERATOR]min) completed 4 weeks of regular endurance training, while matched and randomized into two groups training with (Low) or without (High) carbohydrate (CHO) manipulation three days a week. The CHO manipulation days consisted of a 1-hr high intensity bike session in the morning, recovery for 7 hrs while consuming isocaloric diets containing either high CHO (414±2...
July 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28722022/opioid-release-after-high-intensity-interval-training-in-healthy-human-subjects
#4
Tiina Saanijoki, Lauri Tuominen, Jetro J Tuulari, Lauri Nummenmaa, Eveliina Arponen, Kari Kalliokoski, Jussi Hirvonen
Central opioidergic mechanisms may modulate the positive effects of physical exercise such as mood elevation and stress reduction. How exercise intensity and concomitant affective changes affect central opioidergic responses is unknown. We studied the effects of acute physical exercise on the cerebral μ-opioid receptors (MOR) of 22 healthy recreationally active males using positron emission tomography (PET) and the MOR-selective radioligand [(11)C]carfentanil. MOR binding was measured in three conditions on separate days: after a 60-min aerobic moderate-intensity exercise session, after a high-intensity interval training (HIIT) session, and after rest...
July 19, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28721747/faster-v%C3%AC-o2-kinetics-after-priming-exercises-of-different-duration-but-same-fatigue
#5
Felipe Mattioni Maturana, Arthur Peyrard, John Temesi, Guillaume Y Millet, Juan M Murias
This study compared the responses of two priming exercises of similar fatigue on the adjustment of the oxygen uptake time constant (τV̇O2) in cycling. Ten healthy young adults (25 ± 3 yr) performed: three step transitions from a 20-W baseline to the power output (PO) below the gas exchange threshold (MOD, MODPRE); a 3-min bout (P3MIN) at 90% of peak PO (POpeak), followed by MOD (MOD3MIN); and a 6-min bout (P6MIN) at 80% of POpeak, followed by MOD (MOD6MIN). The O2 supply-to-O2 demand ([HHb]/V̇O2) ratio was calculated for MODPRE, MOD3MIN, and MOD6MIN...
July 19, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28721148/association-of-moderate-aerobic-exercise-and-rho-associated-kinase-2-concentration-in-subjects-with-dyslipidemia
#6
Huadong Bai, Jingchun Sun, Guiying Du, Fengjun Jiao
INTRODUCTION: Dyslipidemia is associated with increased rho-associated kinase 2 (ROCK2) concentration. Whether moderate aerobic exercise could attenuate leukocyte ROCK2 concentration is unknown. MATERIAL AND METHODS: One hundred subjects with dyslipidemia and without statin treatment were enrolled and assigned to exercise and control groups. In the exercise group, at least 30 min of moderate aerobic exercise per day 5 times weekly was recommended. In the control group, participants were recommended to undertake exercise of the same intensity as the exercise group but not mandatorily...
June 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28720592/exercise-training-improves-but-does-not-normalize-left-ventricular-systolic-and-diastolic-function-in-adolescents-with-type-1-diabetes
#7
Silmara Gusso, Teresa Pinto, James C Baldi, José G B Derraik, Wayne S Cutfield, Tim Hornung, Paul L Hofman
OBJECTIVE: To determine the impact of 20 weeks of exercise training in aerobic capacity on left ventricular function and glycemic control in adolescents with and without type 1 diabetes. RESEARCH DESIGN AND METHODS: Fifty-three adolescents with type 1 diabetes (aged 15.6 years) were divided into two groups: exercise training (n = 38) and nontraining (n = 15). Twenty-two healthy adolescents without diabetes (aged 16.7 years) were included and, with the 38 participants with type 1 diabetes, participated in a 20-week exercise-training intervention...
July 18, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28719753/exercise-prescriptions-for-training-and-rehabilitation-in-patients-with-heart-and-lung-disease
#8
Pietro Palermo, Ugo Corrà
Rehabilitation in patients with advanced cardiac and pulmonary disease has been shown to increase survival and improve quality of life among many other benefits. Exercise training is the fundamental ingredient in these rehabilitation programs. However, determining the amount of exercise is not straightforward or uniform. Most rehabilitation and training program fix the time of exercise and set the exercise intensity to the goals of the rehabilitation program and the exercise-related hurdles of the individual...
July 18, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28718344/knee-extensor-fatigue-developed-during-high-intensity-exercise-limits-lower-limb-power-production
#9
Steven J O'bryan, François Billaut, Janet L Taylor, David M Rouffet
We investigated the association between changes in vastii electromyography (EMG) and knee extensor fatigue during high-intensity cycling, and the subsequent effect on lower-limb power and intermuscular coordination during all-out cycling. On two separate days, participants completed 30-s all-out cycling or 10-min of high-intensity cycling followed by 30-s all-out cycling. EMG for gluteus maximus (GMAX), rectus femoris (RF), vastii (VAS), hamstrings (HAM) and gastrocnemius (GAS); co-activation for GMAX/RF, VAS/HAM and VAS/GAS; isometric maximal voluntary force (IMVF) and resting twitch (RT) of the knee extensors were measured...
July 18, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28717812/a-new-adaptive-home-based-exercise-technology-among-older-adults-living-in-nursing-home-a-pilot-study-on-feasibility-acceptability-and-physical-performance
#10
V Valiani, M Lauzé, D Martel, M Pahor, T M Manini, S Anton, M Aubertin-Leheudre
OBJECTIVES: To explore the feasibility and acceptability of a new home-based exercise technology among older adults and to evaluate its efficacy on physical performance measures. DESIGN: Longitudinal clinical trial. SETTING: Oak Hammock at the University of Florida, a nursing home located in Gainesville, Florida. PARTICIPANTS: Twelve pre-disabled older adults (≥75 years) living in a nursing home with a Short Physical Performance Battery (SPPB) score between 6 and 9 and no diagnosis of dementia...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28717626/muscle-fatigue-in-participants-of-indoor-cycling
#11
Ricardo de Melo Dos Santos, Flavio Costa E Costa, Thais Sepeda Saraiva, Bianca Callegari
BACKGROUND: Indoor Cycling (IC) has been gaining recognition and popularity within recent years and few studies have investigated its benefits for sedentary participants. OBJECTIVE: The aim of this study was to evaluate differences in the surface electromyography (sEMG) variables, heart rate (HR), and subjective effort in sedentary participants while they performed an IC session and to compare their results with the trained subjects, to answer the question: Are trained cyclists less susceptible to muscle fatigue, since it is expected that they make less effort? DESIGN: Twenty-six volunteers were split into two groups according to their fitness status and weekly training load...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28717150/a-comparison-of-traditional-and-novel-metrics-to-quantify-resistance-training
#12
Kieran J Marston, Jeremiah J Peiffer, Michael J Newton, Brendan R Scott
Common estimates of external training intensity for resistance exercise do not incorporate inter-set recovery duration, and might not reflect the overall demands of training. This study aimed to assess novel metrics of exercise density (ED) during resistance exercise, and how these related to a physiological marker of internal training intensity as well as traditional measures of external training intensity and volume. Thirteen males and seven females performed two bouts of resistance exercise focused on developing strength (5 sets of 5 repetitions with 5-repetition maximum; 180 s recovery) and hypertrophy (3 sets of 10 repetitions with 10-repetition maximum; 60 s recovery)...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716970/prolonged-force-depression-after-mechanically-demanding-contractions-is-largely-independent-of-ca-2-and-reactive-oxygen-species
#13
Sigitas Kamandulis, Felipe de Souza Leite, Andres Hernández, Abram Katz, Marius Brazaitis, Joseph D Bruton, Tomas Venckunas, Nerijus Masiulis, Dalia Mickeviciene, Nerijus Eimantas, Andrejus Subocius, Dilson E Rassier, Albertas Skurvydas, Niklas Ivarsson, Håkan Westerblad
Increased production of reactive oxygen/nitrogen species (ROS) and impaired cellular Ca(2+) handling are implicated in the prolonged low-frequency force depression (PLFFD) observed in skeletal muscle after both metabolically and mechanically demanding exercise. Metabolically demanding high-intensity exercise can induce PLFFD accompanied by ROS-dependent fragmentation of the sarcoplasmic reticulum Ca(2+) release channels, the ryanodine receptor (RyR)-1. We tested whether similar changes occur after mechanically demanding eccentric contractions...
July 17, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28715881/comparison-of-bone-metabolism-based-on-the-different-ages-and-competition-levels-of-junior-and-high-school-female-rhythmic-gymnasts
#14
Taewoong Oh, Tatsuki Naka
PURPOSE: This study was to clarify the effect of age and competition level by measuring bone metabolism markers and bone mineral density measurements of junior high school and high school female rhythmic gymnasts, who restrict their diets to maintain a low body weight, while routinely undertaking long hours of high-intensity exercise, comparing the gymnasts based on their elite/non-elite. METHODS: The study investigated 7 junior high school and 12 high school female rhythmic gymnasts...
June 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28715880/effects-of-acute-high-intensity-resistance-exercise-on-cognitive-function-and-oxygenation-in-prefrontal-cortex
#15
Hyukki Chang, Kyungae Kim, Yu-Jin Jung, Morimasa Kato
PURPOSE: Moderate-intensity exercise is known to be the best effective intensity to enhance cognitive function, including memory and learning. However, the effects of high-intensity exercise in comparison with moderate- intensity exercise on cognitive function remain controversial. The aim of this study was to investigate the effect of high-intensity resistance exercise on cognitive function. METHODS: Thirty-six healthy female college students volunteered to participate in this study...
June 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28715594/physical-exercise-and-oxidative-stress-in-muscular-dystrophies-is-there-a-good-balance
#16
L Chico, G Ricci, M Cosci O Di Coscio, C Simoncini, G Siciliano
The effect of oxidative stress on muscle damage inducted by physical exercise is widely debated. It is generally agreed that endurance and intense exercise can increase oxidative stress and generate changes in antioxidant power inducing muscle damage; however, regular and moderate exercise can be beneficial for the health improving the antioxidant defense mechanisms in the majority of cases. Growing evidences suggest that an increased oxidative/nitrosative stress is involved in the pathogenesis of several muscular dystrophies (MDs)...
July 1, 2017: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/28715593/physical-exercise-improves-total-antioxidant-capacity-and-gene-expression-in-rat-hippocampal-tissue
#17
F Franzoni, G Federighi, J Fusi, E Cerri, R Banducci, A Petrocchi, A Innocenti, C Pruneti, S Daniele, S Pellegrini, C Martini, R Scuri, F Galetta
Exercise may exert beneficial effects on cognitive functions and play an important role in the prevention of neurodegenerative diseases. Such effects seem to be mediated by changes in anti-oxidative status, but limited information is available on the nature of molecular pathways supporting the antioxidant effects of exercise in the brain. In this study 3-5-month-old male Wistar albino rats were subjected to three times/week moderate intensity exercise on a rodent treadmill for a period of 6 weeks. The tissue antioxidant activity towards various reactive oxygen species (ROS) was determined in the hippocampus...
July 1, 2017: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/28715296/a-self-determination-theory-based-self-myofascial-release-program-in-older-adults-with-myofascial-trigger-points-in-the-neck-and-back-a-pilot-study
#18
Minyoung Lee, Minhee Kim, Sejun Oh, Yoon-Jin Choi, Dongshin Lee, Sang Heon Lee, BumChul Yoon
PURPOSE: To examine the effectiveness and adherence to a self-determination theory (SDT)-based self-myofascial release (SMR) program in older adults with myofascial trigger points (MTrPs), and to investigate the factors that influence participant behavioral change while conducting the program in a home setting. METHODS: An explanatory mixed-method design was used to evaluate a 12-week SDT-based SMR program, including a 4-week group-based education and practice (EP) phase and an 8-week home-based self-management (SM) phase...
July 17, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28715061/physical-activity-assessment-during-gestation-and-its-outcomes-a-review
#19
Wanda Forczek, Marta Curyło, Barbara Forczek
Background: Physical activity recommendations emphasize a positive influence of exercise on health. It is particularly recognized during pregnancy for both the mother and fetus. Aim: This review aims to identify the main trends of activity undertaken by women during gestation and to find out how it affects the expecting mother and her child. Methods: Review of the literature comprising the following databases: PubMed, Academic Search Complete, Health Source-Consumer Edition, Health Source: Nursing/Academic Edition, EMBASE (2000 to May 2013), used detailed search strategies...
July 2017: Obstetrical & Gynecological Survey
https://www.readbyqxmd.com/read/28714739/relationships-between-model-predicted-and-actual-match-performance-in-professional-australian-footballers-during-an-in-season-training-macrocycle
#20
Stuart R Graham, Stuart Cormack, Gaynor Parfitt, Roger Eston
PURPOSE: To assess and compare the validity of internal and external Australian Football (AF) training load measures for predicting match exercise intensity (MEI.min(-1)) and player rank score (PR(Score)) using a variable dose-response model. METHODS: 25 professional AF players (23 ± 3 y, 188.3 ± 7.2 cm and 87.7 ± 8.4 kg) completed a 24-week in-season macrocycle. In-season internal training and match load was quantified using session-RPE (sRPE) and external load from satellite and accelerometer data...
July 17, 2017: International Journal of Sports Physiology and Performance
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