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https://www.readbyqxmd.com/read/29770745/2706-km-cycling-in-two-weeks-effects-on-cardiac-function-in-six-elderly-male-athletes
#1
Thomas Morville, Mads Rosenkilde, Nick Mattsson, Flemming Dela, Jørn W Helge, Hanne K Rasmusen
INTRODUCTION: Physiological effects of exercise on trained and untrained individuals have been studied extensively. Typically, young or middle-aged individuals are examined before and after short periods of vigorous exertion. METHODS: We studied six elderly male athletes (61±8 years (mean ± SD); baseline VO2 max 48±5 ml·kg-1 · min-1 ) with focus on cardiac function and biomarkers following 14 consecutive days of moderate intensity exercise. Cardiac dimensions, function, biomarkers, and other measures of cardiovascular health were examined at baseline and 2 and 28 h after the last day of cycling a total of 2706 km...
May 17, 2018: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29760603/relationship-between-aerobic-capacity-with-oxidative-stress-and-inflammation-biomarkers-in-the-blood-of-older-mexican-urban-dwelling-population
#2
Juana Rosado-Pérez, Víctor Manuel Mendoza-Núñez
The maximal oxygen uptake (VO2max) constitutes an indicator of an organism's capacity to integrate oxygen into the metabolism to obtaining energy. The aim of this study was to determine the relationship between VO2max and oxidative stress (OxS) and chronic inflammation in the elderly individuals. A cross-sectional and exploratory study was conducted in a sample of 52 older persons. We measured plasma lipid peroxides (LPO), red blood cell glutathione peroxidase, red blood cell superoxide dismutase, and total antioxidant status...
April 2018: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/29748195/does-high-intensity-endurance-training-increase-the-risk-of-atrial-fibrillation-a-longitudinal-study-of-left-atrial-structure-and-function
#3
Mildred A Opondo, Norman Aiad, Matthew A Cain, Satyam Sarma, Erin Howden, Douglas A Stoller, Jason Ng, Pieter van Rijckevorsel, Michinari Hieda, Takashi Tarumi, M Dean Palmer, Benjamin D Levine
BACKGROUND: Exercise mitigates many cardiovascular risk factors associated with atrial fibrillation. Endurance training has been associated with atrial structural changes which can increase the risk for atrial fibrillation. The dose of exercise training required for these changes is uncertain. We sought to evaluate the impact of exercise on left atrial (LA) mechanical and electrical function in healthy, sedentary, middle-aged adults. METHODS: Sixty-one adults (52±5 years) were randomized to either 10 months of high-intensity exercise training or yoga...
May 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29745794/visceral-adipose-tissue-tracks-more-closely-with-metabolic-dysfunction-than-intrahepatic-triglyceride-in-non-diabetic-lean-asians
#4
Cherlyn Ding, Zhiling Chan, Yu Chung Chooi, John Choo, Suresh Anand Sadananthan, Navin Michael, S Sendhil Velan, Melvin Khee-Shing Leow, Faidon Magkos
BACKGROUND: Increased visceral adipose tissue (VAT) and intrahepatic triglyceride (IHTG) are important risk factors for the development of type 2 diabetes in obese subjects. The relative contribution of these ectopic fat depots to cardiometabolic risk differs between populations, depends on the degree of obesity and the level of cardiorespiratory fitness, and is difficult to dissect because VAT and IHTG typically co-vary. The aim of this study was to evaluate the effect of an isolated increase in VAT or IHTG on insulin sensitivity and insulin secretion in apparently healthy normal-weight Asian subjects...
May 10, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29721839/association-of-lower-limb-compression-garments-during-high-intensity-exercise-with-performance-and-physiological-responses-a-systematic-review-and-meta-analysis
#5
REVIEW
César Augusto da Silva, Lucas Helal, Roberto Pacheco da Silva, Karlyse Claudino Belli, Daniel Umpierre, Ricardo Stein
BACKGROUND: Although compression garments are used to improve sports performance, methodological approaches and the direction of evidence regarding garments for use in high-intensity exercise settings are diverse. OBJECTIVES: Our primary aim was to summarize the association between lower-limb compression garments (LLCGs) and changes in sports performance during high-intensity exercise. We also aimed to summarize evidence about the following physiological parameters related to sports performance: vertical jump height (VJ), maximal oxygen uptake (VO2 max), submaximal oxygen uptake (VO2 submax), blood lactate concentrations ([La]), and ratings of perceived exertion (RPE, 6-20 Borg scale)...
May 2, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29720949/active-recovery-after-high-intensity-interval-training-does-not-attenuate-training-adaptation
#6
Thimo Wiewelhove, Christoph Schneider, Alina Schmidt, Alexander Döweling, Tim Meyer, Michael Kellmann, Mark Pfeiffer, Alexander Ferrauti
Objective: High-intensity interval training (HIIT) can be extremely demanding and can consequently produce high blood lactate levels. Previous studies have shown that lactate is a potent metabolic stimulus, which is important for adaptation. Active recovery (ACT) after intensive exercise, however, enhances blood lactate removal in comparison with passive recovery (PAS) and, consequently, may attenuate endurance performance improvements. Therefore, the aim of this study was to examine the influence of regular ACT on training adaptations during a HIIT mesocycle...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29719466/effect-of-high-dose-ginsenoside-complex-ug0712-supplementation-on-physical-performance-of-healthy-adults-during-a-12-week-supervised-exercise-program-a-randomized-placebo-controlled-clinical-trial
#7
Eon Sook Lee, Yun Jun Yang, Jun Hyung Lee, Yeong Sook Yoon
Background: Ginseng has been used as an ergogenic agent, although evidence for its effectiveness is weak. A randomized, double-blind, placebo-controlled clinical trial was conducted to evaluate the effect of a ginsenoside complex (UG0712) on changes in exercise performance. Methods: Sedentary individuals ( n   =  117) were randomly assigned into one of three groups: low-dose ginsenoside supplementation (100 mg/d, n   =  39), high-dose ginsenoside supplementation (500 mg/d, n   =  39), or a placebo group (500 mg/d, n   =  39)...
April 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29707393/the-association-between-obesity-and-cognitive-function-in-otherwise-healthy-premenopausal-arab-women
#8
Abdulaziz Farooq, Ann-Marie Gibson, John J Reilly, Nadia Gaoua
Objective: To examine the association between obesity and cognitive function in healthy premenopausal women. Methods: From a cohort of 220 women, 98 were randomly selected that provided complete data. Body composition was examined by dual-energy X-ray scan. All participants completed the Cambridge Neuropsychological Test Automated Battery (CANTAB) to assess cognitive performance in three domains: attention, memory, and planning executive function. The Reaction Time (RTI) test was used to assess motor and mental response speeds; the Stockings of Cambridge (SOC) test was used to assess planning executive function...
2018: Journal of Obesity
https://www.readbyqxmd.com/read/29696568/the-relationship-between-adiposopathy-and-glucose-insulin-homeostasis-is-not-affected-by-moderate-intensity-aerobic-training-in-healthy-women-with-obesity
#9
Andrée-Anne Clément, Eléonor Riesco, Sébastien Tessier, Michel Lacaille, Francine Pérusse, Mélanie Coté, Jean-Pierre Després, John Weisnagel, Jean Doré, Denis R Joanisse, Pascale Mauriège
The contribution of adiposopathy to glucose-insulin homeostasis remains unclear. This longitudinal study examined the potential relationship between the adiponectin/leptin ratio (A/L, a marker of adiposopathy) and insulin resistance (IR: homeostasis model assessment (HOMA)), insulin sensitivity (IS: Matsuda), and insulin response to an oral glucose tolerance test before and after a 16-week walking program, in 29 physically inactive pre- and postmenopausal women with obesity (BMI, 29-35 kg/m2 ; age, 47-54 years)...
April 26, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29688109/power-output-and-pacing-during-international-cross-country-mountain-bike-cycling
#10
Cyril Granier, Chris R Abbiss, Anaël Aubry, Yvon Vauchez, Sylvain Dorel, Christophe Hausswirth, Yann Le Meur
PURPOSE: To characterize the physiological profiles of elite cross-country mountain bike (XCO-MTB) cyclists, and to examine their pacing and power output (PO) distribution during international races. METHODS: Over two competitive seasons, eight elite male XCO-MTB cyclists (VO2 max: 79.9 ± 5.2 ml.min-1 .kg-1 , MAP: 411 ± 18 W and 6.3 ± 0.4 W.kg-1 ) regularly undertook incremental tests to assess their PO and heart rate (HR) at first and second ventilatory thresholds (VT1 and VT2) and at VO2max ...
April 24, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29687648/mitochondrial-respiration-is-associated-with-lower-energy-expenditure-and-lower-aerobic-capacity-in-african-american-women
#11
Frederico G S Toledo, John J Dubé, Bret H Goodpaster, Maja Stefanovic-Racic, Paul M Coen, James P DeLany
OBJECTIVE: Reasons for the higher obesity prevalence in African American women (AAW) compared with Caucasian women (CW) are unknown. Energy expenditure and maximal aerobic capacity (VO2 max) are lower in AAW. It was hypothesized that these differences are explained by skeletal muscle characteristics, particularly mitochondrial content and function. METHODS: Multivariate regression analyses were used to examine the relationships between energy expenditure (resting and during a hyperinsulinemic-euglycemic clamp) and VO2 max versus body composition, physical activity, and skeletal muscle mitochondrial measurements in AAW and CW...
May 2018: Obesity
https://www.readbyqxmd.com/read/29670756/correlates-and-predictors-of-obesity-specific-quality-of-life-of-former-participants-of-a-residential-intensive-lifestyle-intervention
#12
A-M Elbe, P Elsborg, S Dandanell, J W Helge
Introduction: The aim of this study was to investigate the relationship between weight loss during and after a unique type of weight loss intervention, namely, a residential intensive lifestyle intervention (ILI), and participants' obesity-specific health-related quality of life (HRQOL) several years after the intervention. In the residential ILI under investigation, participants attended a 10- to 12-week long course away from their daily living environment, namely, at Ubberup Folk High School located in Denmark...
April 2018: Obesity Science & Practice
https://www.readbyqxmd.com/read/29665614/vo2max-testing-in-trail-runners-is-there-a-specific-exercise-test-protocol
#13
Volker Scheer, Katharina Ramme, Claus Reinsberger, Hans-Christian Heitkamp
Trail running places specific physiological demands on the human body due to its uphill and downhill running sections. We developed and investigated a more sport-specific trail exercise test protocol (inclination and speed incremental protocol), and compared it to two standard exercise test protocols (horizontal step and ramp protocol) in thirteen highly trained trail runners (age 31±6 years, height 179±6.4 cm, weight 69.2±7.9 kg, BMI 21.6±2.1 kg/m2 ). The maximum oxygen uptake (VO2 max) measured during the trail test (62...
April 17, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29664684/effect-of-breastfeeding-in-early-life-on-cardiorespiratory-and-physical-fitness-a-systematic-review-and-meta-analysis
#14
Javad Heshmati, Mahdi Sepidarkish, Farzad Shidfar, Fatemeh Shokri, Samira Vesali, Maryam Akbari, Reza Omani-Samani
BACKGROUND: Numerous studies have reported the associations between the type of feeding during infancy and subsequent chronic diseases. OBJECTIVE: The objective of this systematic review is to synthesize the available literature concerning the effect of breastfeeding in infancy on physical and cardiorespiratory fitness in children and adolescents. MATERIALS AND METHODS: We performed a comprehensive search of medical bibliographic databases to identify observational studies reporting the association between breastfeeding and cardiorespiratory or physical fitness...
April 17, 2018: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/29644889/comparing-exercise-responses-to-aerobic-plus-resistance-training-between-postmenopausal-breast-cancer-survivors-undergoing-aromatase-inhibitor-therapy-and-healthy-women
#15
Thais R S de Paulo, Kerri M Winters-Stone, Juliana Viezel, Fabricio E Rossi, Bruna L Aro, Ana Carolina A C Trindade, Jamile S Codogno, Ismael F Freitas Junior
BACKGROUND: The aim of this study was to explore whether postmenopausal breast cancer survivors undergoing aromatase inhibitor therapy differ from healthy postmenopausal women in their response to the same aerobic + resistance training. METHODS: The participants were separated into two groups: postmenopausal breast cancer survivors undergoing aromatase inhibitor therapy for an average of 20 months (18 women) and healthy postmenopausal women (24 women). We assessed aerobic capacity (predicted maximum oxygen uptake (VO2 max) and maximum running velocity test (Vmax)) through a walking test, upper and lower body muscle strength using an estimated one-repetition maximum test, and body composition by dual-energy X-ray absorptiometry at baseline and at three, six, and nine months, respectively...
April 12, 2018: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29643605/effect-of-aquatic-versus-land-based-exercise-programs-on-physical-performance-in-severely-burned-patients-a-randomized-controlled-trial
#16
Ibrahim M Zoheiry, Haidy N Ashem, Hamada Ahmed Hamada Ahmed, Rami Abbas
[Purpose] To compare the effect of an aquatic-based versus a land-based exercise regimen on the physical performance of severely burned patients. [Subjects and Methods] Forty patients suffering from severe burn (total body surface area more than 30%) were recruited from several outpatient clinics in Greater Cairo. Their ages ranged between 20 to 40 years and were randomly assigned into two equal groups: group (A), which received an aquatic based exercise program, and group (B), which received a land-based exercise program...
December 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29625622/effect-of-exercise-on-pain-and-functional-capacity-in-breast-cancer-patients
#17
Andréa Dias Reis, Paula Tamara Vieira Teixeira Pereira, Renata Rodrigues Diniz, Jurema Gonçalves Lopes de Castro Filha, Alcione Miranda Dos Santos, Bianca Trovello Ramallo, Florentino Assenço Alves Filho, Francisco Navarro, João Batista Santos Garcia
PURPOSE: To assess the influence of combined training on pain, fatigue, maximal oxygen uptake (VO2 max), body mass index (BMI), flexibility, and strength in patients with breast cancer. METHODS: A controlled pilot study with 28 patients undergoing chemotherapy, radiation therapy, and clinical observation in a renowned cancer treatment center; the patients were aged from 30 to 59 years old and were not engaged in physical training for three months previously. The Study Group (SG) underwent 12 weeks of training, including three 60-min sessions of aerobic exercise and resistance training, and two sessions of flexibility training per week; each flexibility exercise lasted 20 s and was performed in sets of three repetitions...
April 6, 2018: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/29618979/improvements-in-attention-and-cardiac-autonomic-modulation-after-a-2-weeks-sprint-interval-training-program-a-fidelity-approach
#18
Arilson F M de Sousa, André R Medeiros, Stefano Benitez-Flores, Sebastián Del Rosso, Matthew Stults-Kolehmainen, Daniel A Boullosa
This study aimed to: (1) investigate the influence of a 2-weeks sprint interval training (SIT) program on aerobic capacity, cardiac autonomic control, and components of attention in young healthy university students; and (2) to ascertain whether training fidelity would influence these adaptations. One hundred and nine participants were divided into an experimental (EG) and control (CG) groups. The EG performed a SIT program that consisted of 6 sessions of 4 × 30 s "all-out" efforts on a cycle ergometer, interspersed with active rests of 4 min...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29590175/diet-and-hygiene-practices-influence-morbidity-in-schoolchildren-living-in-schistosomiasis-endemic-areas-along-lake-victoria-in-kenya-and-tanzania-a-cross-sectional-study
#19
Iman Mohamed, Safari Kinung'hi, Pauline N M Mwinzi, Isaac O Onkanga, Kennedy Andiego, Geoffrey Muchiri, Maurice R Odiere, Birgitte Jyding Vennervald, Annette Olsen
BACKGROUND: Since 2011, cohorts of schoolchildren in regions bordering Lake Victoria in Kenya and Tanzania have been investigated for morbidity caused by Schistosoma mansoni infection. Despite being neighbouring countries with similar lifestyles and ecological environments, Tanzanian schoolchildren had lower S. mansoni prevalence and intensity and they were taller and heavier, fewer were wasted and anaemic, and more were physical fit compared to their Kenyan peers. The aim of the present study was to evaluate whether diet and school-related markers of socioeconomic status (SES) could explain differences in morbidity beyond the effect of infection levels...
March 28, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29588271/development-of-an-exergame-to-deliver-a-sustained-dose-of-high-intensity-training-formative-pilot-randomized-trial
#20
Thomas McBain, Matthew Weston, Paul Crawshaw, Catherine Haighton, Iain Spears
BACKGROUND: Sport science can play a critical role in reducing health inequalities. The inverse relationship between life expectancy, cardiorespiratory fitness, and socioeconomic status could be addressed by performing high-intensity training (HIT), delivered in a class salient and accessible approach. Commercially available exergames have shown encouraging compliance rates but are primarily designed for entertainment purposes rather than focusing on health-related outcomes. A serious game tailored toward delivering an exercise stimulus, while reducing the aversive protocols associated with HIT, could be beneficial to engage and improve health outcomes in socially deprived males...
March 27, 2018: JMIR Serious Games
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