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https://www.readbyqxmd.com/read/29108901/keto-adaptation-enhances-exercise-performance-and-body-composition-responses-to-training-in-endurance-athletes
#1
Fionn T McSwiney, Bruce Wardrop, Parker N Hyde, Richard A Lafountain, Jeff S Volek, Lorna Doyle
BACKGROUND: Low-carbohydrate diets have recently grown in popularity among endurance athletes, yet little is known about the long-term (>4 wk) performance implications of consuming a low-carbohydrate high fat ketogenic diet (LCKD) in well-trained athletes. METHODS: Twenty male endurance-trained athletes (age 33 ± 11y, body mass 80 ± 11kg; BMI 24.7 ± 3.1 kg/m(2)) who habitually consumed a carbohydrate-based diet, self-selected into a high-carbohydrate (HC) group (n = 11, %carbohydrate:protein:fat = 65:14:20), or a LCKD group (n = 9, 6:17:77)...
November 3, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29099919/does-strength-promoting-exercise-confer-unique-health-benefits-a-pooled-analysis-of-eleven-population-cohorts-with-all-cause-cancer-and-cardiovascular-mortality-endpoints
#2
Emmanuel Stamatakis, I-Min Lee, Jason Bennie, Jonathan Freeston, Mark Hamer, Gary O'Donovan, Ding Ding, Adrian Bauman, Yorgi Mavros
Public health guidance includes strength-promoting exercise (SPE) but there is little evidence on its links with mortality. Using data from the Health Survey for England (HSE) and Scottish Health Survey (SHS) from 1994-2008 we examined the associations between SPE (gym-based and own bodyweight strength activities) and all-cause, cancer, and cardiovascular disease mortality. Multivariable-adjusted Cox regression examine the associations between SPE (any, low/high volume, adherence to SPE guideline) and mortality...
October 31, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29070027/absolute-and-relative-reliability-of-acute-effects-of-aerobic-exercise-on-executive-function-in-seniors
#3
Lars Donath, Sebastian Ludyga, Daniel Hammes, Anja Rossmeissl, Nadin Andergassen, Lukas Zahner, Oliver Faude
BACKGROUND: Aging is accompanied by a decline of executive function. Aerobic exercise training induces moderate improvements of cognitive domains (i.e., attention, processing, executive function, memory) in seniors. Most conclusive data are obtained from studies with dementia or cognitive impairment. Confident detection of exercise training effects requires adequate between-day reliability and low day-to-day variability obtained from acute studies, respectively. These absolute and relative reliability measures have not yet been examined for a single aerobic training session in seniors...
October 25, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/29045021/reduced-dietary-intake-of-micronutrients-with-antioxidant-properties-negatively-impacts-muscle-health-in-aged-mice
#4
Miriam van Dijk, Francina J Dijk, Anita Hartog, Klaske van Norren, Sjors Verlaan, Ardy van Helvoort, Richard T Jaspers, Yvette Luiking
BACKGROUND: Inadequate intake of micronutrients with antioxidant properties is common among older adults and has been associated with higher risk of frailty, adverse functional outcome, and impaired muscle health. However, a causal relationship is less well known. The aim was to determine in old mice the impact of reduced dietary intake of vitamins A/E/B6/B12/folate, selenium, and zinc on muscle mass, oxidative capacity, strength, and physical activity (PA) over time. METHODS: Twenty-one-month-old male mice were fed either AIN-93-M (control) or a diet low in micronutrients with antioxidant properties (=LOWOX-B: 50% of mouse recommended daily intake of vitamins A, E, B6, and B12, folate, selenium, and zinc) for 4 months...
October 16, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28944087/exercise-induced-irisin-in-bone-and-systemic-irisin-administration-reveal-new-regulatory-mechanisms-of-bone-metabolism
#5
Jin Zhang, Paloma Valverde, Xiaofang Zhu, Dana Murray, Yuwei Wu, Liming Yu, Hua Jiang, Michel M Dard, Jin Huang, Zhiwei Xu, Qisheng Tu, Jake Chen
Irisin is a polypeptide hormone derived from the proteolytic cleavage of fibronectin-type III domain-containing 5 (FNDC5) protein. Once released to circulation upon exercise or cold exposure, irisin stimulates browning of white adipose tissue (WAT) and uncoupling protein 1 (UCP1) expression, leading to an increase in total body energy expenditure by augmented UCP1-mediated thermogenesis. It is currently unknown whether irisin is secreted by bone upon exercise or whether it regulates bone metabolism in vivo...
2017: Bone Research
https://www.readbyqxmd.com/read/28836315/inotropic-myocardial-reserve-deficiency-is-the-predominant-feature-of-exercise-haemodynamics-in-cardiac-amyloidosis
#6
Tor Skibsted Clemmensen, Henning Mølgaard, Jens Sörensen, Hans Eiskjaer, Niels Frost Andersen, Søren Mellemkjaer, Mads Jønsson Andersen, Lars Poulsen Tolbod, Hendrik J Harms, Steen Hvitfeldt Poulsen
AIMS: This study aimed to characterize invasive haemodynamics during exercise in subjects with cardiac amyloidosis (CA). METHODS AND RESULTS: The study population numbered 44 subjects. Group A (CA-positive, n = 24) comprised wild-type transthyretin patients (n = 10), familial transthyretin amyloidosis mutation carriers (ATTRm) with cardiac involvement (n = 5), and light-chain amyloidosis patients with cardiac involvement (n = 9). Group B (CA-negative, n = 20) comprised four healthy ATTRm subjects without cardiac involvement documented by (11) C-PIB positron emission tomography and 16 healthy controls...
August 24, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28767683/quantifying-kinematic-differences-between-land-and-water-during-squats-split-squats-and-single-leg-squats-in-a-healthy-population
#7
COMPARATIVE STUDY
Anna C Severin, Brendan J Burkett, Mark R McKean, Aaron N Wiegand, Mark G L Sayers
Aquatic exercises can be used in clinical and sporting disciplines for both rehabilitation and sports training. However, there is limited knowledge on the influence of water immersion on the kinematics of exercises commonly used in rehabilitation and fitness programs. The aim of this study was to use inertial sensors to quantify differences in kinematics and movement variability of bodyweight squats, split squats, and single-leg squats performed on dry land and whilst immersed to the level of the greater trochanter...
2017: PloS One
https://www.readbyqxmd.com/read/28760151/pureair-protocol-randomized-controlled-trial-of-intensive-pulmonary-rehabilitation-versus-standard-care-in-patients-undergoing-surgical-resection-for-lung-cancer
#8
Stefania Fugazzaro, Stefania Costi, Carlotta Mainini, Besa Kopliku, Cristian Rapicetta, Roberto Piro, Roberta Bardelli, Patricia Filipa Sobral Rebelo, Carla Galeone, Giorgio Sgarbi, Filippo Lococo, Massimiliano Paci, Tommaso Ricchetti, Silvio Cavuto, Domenico Franco Merlo, Sara Tenconi
BACKGROUND: Non-small cell lung cancer is the most common type of lung cancer. Surgery is proven to be the most effective treatment in early stages, despite its potential impact on quality of life. Pulmonary rehabilitation, either before or after surgery, is associated with reduced morbidity related symptoms and improved exercise capacity, lung function and quality of life. METHODS: We describe the study protocol for the open-label randomized controlled trial we are conducting on patients affected by primary lung cancer (stages I-II) eligible for surgical treatment...
July 31, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28759977/effects-of-progressive-backward-body-weight-suppoted-treadmill-training-on-gait-ability-in-chronic-stroke-patients-a-randomized-controlled-trial
#9
Kyung Hun Kim, Kyoung Bo Lee, Young-Hyeon Bae, Shirley S M Fong, Suk Min Lee
BACKGROUND AND OBJETIVE: A stroke patient with hemiplegic gait is generally described as being slow and asymmetric. Body weight-supported treadmill training and backward gait training are recent additions to therapeutic gait trainings that may help improve gait in stroke patient with hemiplegic gait. Therefore, we examined the effect of progressive backward body weight-supported treadmill training on gait in chronic stroke patients with hemiplegic gait. METHODS: Thirty subjects were divided to the experimental and control groups...
October 23, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28756392/a-comprehensive-strength-testing-protocol-offers-no-clinical-value-in-predicting-risk-of-hamstring-injury-a-prospective-cohort-study-of-413-professional-football-players
#10
Nicol van Dyk, Roald Bahr, Angus F Burnett, Rod Whiteley, Arnhild Bakken, Andrea Mosler, Abdulaziz Farooq, Erik Witvrouw
BACKGROUND: Hamstring injuries remain prevalent across a number of professional sports. In football, the incidence has even increased by 4% per year at the Champions League level over the last decade. The role of muscle strength or strength ratios and their association with risk of hamstring injury remain restricted by small sample sizes and inconclusive results. PURPOSE: The purpose of this study is to identify risk factors for hamstring injury in professional football players in an adequately powered, prospective cohort study...
July 29, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28747468/sympathetic-neural-and-hemodynamic-responses-to-head-up-tilt-during-isoosmotic-and-hyperosmotic-hypovolemia
#11
Alexander M Posch, Adam J Luippold, Katherine M Mitchell, Karleigh E Bradbury, Robert W Kenefick, Samuel N Cheuvront, Nisha Charkoudian
We hypothesized that muscle sympathetic nerve activity (MSNA) during head-up tilt (HUT) would be augmented during exercise-induced (hyperosmotic) dehydration but not isoosmotic dehydration via an oral diuretic. We studied 26 young healthy subjects (7 female, 19 male) divided into three groups: euhydrated (EUH, n = 7), previously exercised in 40°C while maintaining hydration; dehydrated (DEH, n = 10), previously exercised in 40°C during which ~3% of body weight was lost via sweat loss; and diuretic (DIUR, n = 9), a group that did not exercise but lost ~3% of body weight via diuresis (furosemide, 80 mg by mouth)...
October 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28731981/technology-in-strength-and-conditioning-assessing-bodyweight-squat-technique-with-wearable-sensors
#12
Martin A OʼReilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
O'Reilly, MA, Whelan, DF, Ward, TE, Delahunt, E, and Caulfield, BM. Technology in strength and conditioning: assessing bodyweight squat technique with wearable sensors. J Strength Cond Res 31(8): 2303-2312, 2017-Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However, it is not always practical to operate under the direct supervision of an S&C coach and consequently individuals are often left training without expert oversight. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualized feedback regarding exercise performance...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28720182/ground-reaction-forces-during-reduced-gravity-running-in-parabolic-flight
#13
Peter Cavanagh, Andrea Rice, Molly Glauberman, Amanda Sudduth, Arien Cherones, Shane Davis, Michael Lewis, Andrea Hanson, Grier Wilt
BACKGROUND: Treadmills have been employed as both a form of exercise and a countermeasure to prevent changes in the musculoskeletal system on almost all NASA missions and many Russian missions since the early Space Shuttle flights. It is possible that treadmills may also be part of exercise programs on future Mars missions and that they may be a component of exercise facilities in lunar or Martian habitats. METHODS: In order to determine if the ambient gravity on these destinations will provide osteogenic effects while performing exercise on a treadmill, ground reactions forces (GRFs) were measured on eight subjects (six women and two men) running at 6 mph during parabolic flight in Martian and lunar gravity conditions...
August 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28625601/role-of-social-interaction-exercise-diet-and-age-on-developing-and-untreated-diabetes-in-cynomolgus-monkeys
#14
Feng Yue, Guodong Zhang, Jorge E Quintero, Don M Gash, Zhiming Zhang
Type 2 diabetes mellitus is the most common form of diabetes that occurs in both human and nonhuman primates. Although spontaneously diabetic nonhuman primates are used extensively in diabetic related research and are a proven valuable tool for the study of the natural history of diabetes, little is known about the key factors that can cause this metabolic disorder and the preventative measures that could be employed to minimize the consequences of diabetes. Using a model of developing and untreated diabetes, this study describes the effects of housing arrangement (socially group- versus individually single-housed), exercise, diet, age, and sex on fasting plasma glucose, key lipids associated with diabetes, and bodyweight in two large cohorts of nonhuman primates...
June 15, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28557854/short-term-effects-of-resistance-training-modalities-on-performance-measures-in-male-adolescents
#15
P W Winwood, J J Buckley
This study compared the effects of seven weeks of bodyweight, mobility and resistance training programs on strength, power, and sprint times. Thirty-nine male adolescents (aged 14-15 years) were randomly assigned to one of two groups; bodyweight and mobility training (BMT) (n=25) or combined bodyweight, mobility and free weights training (CBT) (n=14). A physical education class (n=23) of similar age constituted a control group (CON). Both training groups performed two bodyweight and mobility training sessions per week and the CBT group performed two additional free-weight resistance exercise training sessions...
May 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28502112/sglt2-inhibitor-luseogliflozin-added-to-glucagon-like-peptide-1-receptor-agonist-liraglutide-improves-glycemic-control-with-bodyweight-and-fat-mass-reductions-in-japanese-patients-with-type-2-diabetes-a-52-week-open-label-single-arm-study
#16
Yutaka Seino, Daisuke Yabe, Takashi Sasaki, Atsushi Fukatsu, Hisae Imazeki, Hidekazu Ochiai, Soichi Sakai
AIMS/INTRODUCTION: To evaluate the safety and efficacy of luseogliflozin added to liraglutide monotherapy in Japanese individuals with type 2 diabetes (T2D). MATERIALS AND METHODS: This 52-week, multicenter, open-label, single-arm clinical study enrolled Japanese patients who had inadequate glycemic control with diet/exercise and liraglutide monotherapy. Major efficacy endpoints included the changes from baseline in HbA1c, fasting plasma glucose (FPG), and bodyweight...
May 14, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28500415/mind-muscle-connection-training-principle-influence-of-muscle-strength-and-training-experience-during-a-pushing-movement
#17
Joaquin Calatayud, Jonas Vinstrup, Markus D Jakobsen, Emil Sundstrup, Juan Carlos Colado, Lars L Andersen
PURPOSE: To investigate the effect of different attentional focus conditions on muscle activity during the push-up exercise and to assess the possible influence of muscle strength and training experience. METHODS: Eighteen resistance-trained men performed 1RM bench press testing and were familiarized with the procedure during the first session. In the second session, three different conditions were randomly performed: regular push-up and push-up focusing on using the pectoralis major and triceps brachii muscles, respectively...
July 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28469750/the-effect-of-previous-wingate-performance-using-one-body-region-on-subsequent-wingate-performance-using-a-different-body-region
#18
Leonie Harvey, Matthew Bousson, Chris McLellan, Dale Lovell
The 30 second Wingate Anaerobic Test (WAnT) is the gold standard measure of anaerobic performance. The present investigation aimed to determine if a previous WAnT using one body region significantly affected a subsequent WAnT using a different body region. Twelve male university students (n = 12, 23 ± 2 years, 84 ± 16.1 kg, 178.5 ± 7.4 cm) volunteered to complete two repeated WAnT protocols (either lower body WAnT followed by an upper body WAnT or vice versa) on two separate testing occasions. The upper body WAnT was conducted on a modified electromagnetically braked cycle ergometer using a flywheel braking force corresponding to 5% bodyweight...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28426512/technology-in-s-c-assessing-bodyweight-squat-technique-with-wearable-sensors
#19
Martin A O'Reilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However it is not always practical to operate under the direct supervision of an S&C coach and consequently individuals are often left training without expert oversight. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualised feedback regarding exercise performance...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28393680/wheeled-assistive-device-for-load-carriage-the-effects-on-human-gait-and-biomechanics
#20
Itay Ketko, Meir Plotnik, Ran Yanovich, Amit Gefen, Yuval Heled
Soldiers are often required to carry loads which impose biomechanical strain on the human body. This can adversely affect physical performances. Recently, wheel-based devices (WBD) were designed to reduce the load on the soldier. In the present study, a prototype of this newly developed WBD was evaluated. Thirteen volunteers performed three exercise protocols on a treadmill as follows: (1) no load; (2) carrying 40% of their bodyweight with a backpack or; (3) with the WBD. Data acquisition included: gait parameters, vertical ground reaction forces (VGRF) and contact pressure acting on the shoulder...
April 10, 2017: Ergonomics
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