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https://www.readbyqxmd.com/read/29775962/preterm-birth-and-oxidative-stress-effects-of-acute-physical-exercise-and-hypoxia-physiological-responses
#1
Agnès Martin, Camille Faes, Tadej Debevec, Chantal Rytz, Grégoire Millet, Vincent Pialoux
Preterm birth is a global health issue that can induce lifelong medical sequela. Presently, at least one in ten newborns are born prematurely. At birth, preterm newborns exhibit higher levels of oxidative stress (OS) due to the inability to face the oxygen rich environment in which they are born into. Moreover, their immature respiratory, digestive, immune and antioxidant defense systems, as well as the potential numerous medical interventions following a preterm birth, such as oxygen resuscitation, nutrition, phototherapy and blood transfusion further contribute to high levels of OS...
May 1, 2018: Redox Biology
https://www.readbyqxmd.com/read/29775421/probability-of-heat-intolerance-standardized-interpretation-of-heat-tolerance-testing-results-versus-specialist-judgment
#2
Haggai Schermann, Erin Craig, Einat Yanovich, Itay Ketko, Gary Kalmanovich, Ran Yanovich
CONTEXT:   The heat-tolerance test (HTT) is a screening tool for secondary prevention of exertional heat illness by the Israel Defense Forces. To discern participant tolerance, recruits are exposed to intermediate environmental and exercise stresses, and their physiological responses, core temperature, and heart rate are monitored. When their physiological measures rise at a higher rate or exceed the upper levels of absolute values compared with other participants, heat intolerance (HI) is diagnosed...
April 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29775076/walking-with-controlled-breathing-improves-exercise-tolerance-anxiety-and-quality-of-life-in-heart-failure-patients-a-randomized-controlled-trial
#3
Hsiu-Chin Teng, Mei-Ling Yeh, Mei-Hua Wang
BACKGROUND: Patients with heart failure experience not only impaired physical condition, but also their physical activity, moods, and quality of life may be diminished. AIMS: The purpose of this study was to investigate the effects of 12-week walking with breathing program on physical activity tolerance considering time-dependent physiological factors and time-independent interoceptive awareness, as well as psychosocial factors. METHODS: This randomized controlled trial recruited 90 heart failure patients and randomly assigned them...
May 1, 2018: European Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/29773865/perlecan-a-heparan-sulfate-proteoglycan-regulates-systemic-metabolism-with-dynamic-changes-in-adipose-tissue-and-skeletal-muscle
#4
Yuri Yamashita, Satoshi Nakada, Toshinori Yoshihara, Takeshi Nara, Norihiko Furuya, Takashi Miida, Nobutaka Hattori, Eri Arikawa-Hirasawa
Perlecan (HSPG2), a heparan sulfate proteoglycan, is a component of basement membranes and participates in a variety of biological activities. Here, we show physiological roles of perlecan in both obesity and the onset of metabolic syndrome. The perinatal lethality-rescued perlecan knockout (Hspg2-/- -Tg) mice showed a smaller mass and cell size of white adipose tissues than control (WT-Tg) mice. Abnormal lipid deposition, such as fatty liver, was not detected in the Hspg2-/- -Tg mice, and those mice also consumed more fat as an energy source, likely due to their activated fatty acid oxidation...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29770745/2706-km-cycling-in-two-weeks-effects-on-cardiac-function-in-six-elderly-male-athletes
#5
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/29769827/effects-of-a-4-week-very-low-carbohydrate-diet-on-high-intensity-interval-training-responses
#6
Lukas Cipryan, Daniel J Plews, Alessandro Ferretti, Phil B Maffetone, Paul B Laursen
The purpose of the study was to examine the effects of altering from habitual mixed Western-based (HD) to a very low-carbohydrate high-fat (VLCHF) diet over a 4-week timecourse on performance and physiological responses during high-intensity interval training (HIIT). Eighteen moderately trained males (age 23.8 ± 2.1 years) consuming their HD (48 ± 13% carbohydrate, 17 ± 3% protein, 35 ± 9% fat) were assigned to 2 groups. One group was asked to remain on their HD, while the other was asked to switch to a non-standardized VLCHF diet (8 ± 3% carbohydrate, 29 ± 15% protein, 63 ± 13% fat) for 4 weeks...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29767351/evaluating-the-methods-used-for-measuring-cerebral-blood-flow-at-rest-and-during-exercise-in-humans
#7
REVIEW
Michael M Tymko, Philip N Ainslie, Kurt J Smith
The first accounts of measuring cerebral blood flow (CBF) in humans were made by Angelo Mosso in ~1880, who recorded brain pulsations in patients with skull defects. In 1890, Charles Roy and Charles Sherrington determined in animals that brain pulsations-assessed via a similar method used by Mosso-were altered during a variety of stimuli including sensory nerve stimulation, asphyxia, and pharmacological interventions. Between 1880 and 1944, measurements for CBF were typically relied on skull abnormalities in humans...
May 16, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29762052/effects-of-physical-exercise-on-adiponectin-leptin-and-inflammatory-markers-in-childhood-obesity-systematic-review-and-meta-analysis
#8
Felice Sirico, Antonio Bianco, Giovanni D'Alicandro, Clotilde Castaldo, Stefania Montagnani, Rocco Spera, Franca Di Meglio, Daria Nurzynska
BACKGROUND: New findings on adipose tissue physiology and obesity-associated inflammation status suggest that modification of the adipokine level can be relevant for the long-term prevention of obesity-associated chronic disease. OBJECTIVES: The scope of the present study was to investigate the effectiveness of physical exercise in reducing the systemic inflammation related to obesity in children. METHODS: We conducted a systematic review with meta-analysis of controlled randomized trials, identified through electronic database search, which investigated the effect of physical exercise, without concomitant dietary intervention, on adiponectin, leptin, and/or other inflammatory markers in children up to age 18 years with a body mass index greater than the 95th percentile for age and sex...
May 15, 2018: Childhood Obesity
https://www.readbyqxmd.com/read/29761715/a-survey-of-student-engagement-with-multiple-resources-in-an-undergraduate-physiology-course-retrieve-or-look-it-up
#9
Lisa C Anderson
Retrieval practice, a deep-learning technique in which the learner attempts to recall a concept of interest from memory, has been shown to be more effective than surface-learning techniques, such as rereading a textbook. Accordingly, textbook publishers are developing supplemental resources that are purported to improve student learning outcomes by encouraging deep learning and critical thinking. The purpose of this study is to 1) survey students in a physiology course about their use of multiple course resources; and 2) assess the effect of self-reported engagement in course resources on learning outcomes, as assessed by comparing course grades...
June 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29761708/the-potential-of-interprofessional-education-to-translate-physiology-curricula-effectively-into-future-team-based-healthcare
#10
Scott Edwards, Patricia E Molina, Kathleen H McDonough, Donald E Mercante, Tina Patel Gunaldo
Incorporating active interprofessional education (IPE) opportunities into the classroom setting is a potentially effective mechanism to enhance student learning both in the basic sciences and for future interprofessional collaboration. We integrated an IPE exercise into a graduate-level human physiology course at our health sciences center that enrolled physician assistant (PA), physical therapy (PT), and graduate studies students. Our activity adopted and targeted the four Interprofessional Education Collaborative (IPEC) competency domains of values/ethics (VE), roles/responsibilities, interprofessional communication, and teams and teamwork (TT)...
June 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29761312/recovery-of-upper-body-muscle-power-after-short-intensive-exercise-comparing-boys-and-men
#11
Yitzhak Weinstein, Omri Inbar, Ron Mor-Unikovski, Anthony Luder, Gal Dubnov-Raz
PURPOSE: Boys' lower-body muscle power generation (PO) recovers faster than men's following intensive exercise. The purpose of this study was to examine whether boys differ from adult men in recovering from upper-body muscle power generation following intensive exercise. METHODS: Fifteen prepubertal boys (M ± SD age 10.6 ± 1.0 years) and 13 men (31.1 ± 5.0 years) performed two upper-body Wingate Anaerobic Tests (WAnT), separated by either 2-min or 10-min recovery intervals...
May 14, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29756632/effects-of-push-off-ability-and-handcycle-type-on-handcycling-performance-in-able-bodied-participants
#12
Ingrid Kouwijzer, Carla F J Nooijen, Kees van Breukelen, Thomas W J Janssen, Sonja de Groot
OBJECTIVE: To assess the effects on handcycling performance and physiological responses, of: (i) making a closed chain by comparing handcycling in a recumbent bike with 2-feet footrest (closed chain) with handcycling with 1 footrest (partial closed chain) and without a footrest (no closed chain); (ii) equipment by comparing handcycling in a recumbent bike with a kneeling bike. METHODS: Ten able-bodied participants performed submaximal exercise and sprint tests, once in a knee-ling bike and 3 times on a recumbent: 2-feet support, 1-foot support and without foot support...
May 14, 2018: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29756416/testosterone-and-sarcopenia
#13
REVIEW
Myung Jun Shin, Yun Kyung Jeon, In Joo Kim
Aging affects metabolism, leading to physiological and functional impairments, and is also related to changes in body composition, including reduced skeletal muscle mass and increased body fat. These changes are correlated with the pathophysiology of sarcopenia, which is defined as age-related loss of skeletal muscle mass and strength. Low testosterone levels are associated with unfavorable body composition changes, and sex hormones decrease with aging. Androgen deficiency, along with lack of exercise and poor nutrition, may be among the modifiable contributors to sarcopenia...
May 11, 2018: World Journal of Men's Health
https://www.readbyqxmd.com/read/29754457/cardioprotective-role-of-igf-1-in-the-hypertrophied-myocardium-of-the-spontaneously-hypertensive-rats-a-key-effect-on-nhe-1-activity
#14
Alejandra M Yeves, Juan I Burgos, Andrés J Medina, M Celeste Villa-Abrille, Irene L Ennis
AIM: Myocardial Na+ /H+ exchanger-1 (NHE-1) hyperactivity and oxidative stress are interrelated phenomena playing pivotal roles in the development of pathological cardiac hypertrophy and heart failure. Exercise training is effective to convert pathological into physiological hypertrophy in the spontaneously hypertensive rats (SHR) and IGF-1 -key humoral mediator of exercise training- inhibits myocardial NHE-1, at least in normotensive rats. Therefore, we hypothesize that IGF-1 by hampering NHE-1 hyperactivity and oxidative stress should exert a cardioprotective effect in the SHR...
May 13, 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29747662/progressive-mobility-program-and-technology-to-increase-the-level-of-physical-activity-and-its-benefits-in-respiratory-muscular-system-and-functionality-of-icu-patients-study-protocol-for-a-randomized-controlled-trial
#15
Debora Stripari Schujmann, Adriana Claudia Lunardi, Carolina Fu
BACKGROUND: Enhanced mobility in the Intensive Care Unit (ICU) could minimize the negative effects of critical illness, such as declines in cognitive, muscular, respiratory, and functional capacity. We aim to compare the functional status at ICU discharge of patients who underwent a progressive mobilization protocol versus patients who received conventional physiotherapy. We also examine the level of physical activity in the ICU, the degree of pulmonary and muscle function, and the length of stay to analyze correlations between these variables...
May 10, 2018: Trials
https://www.readbyqxmd.com/read/29745787/time-trial-performance-in-world-class-speed-skaters-after-chronic-nitrate-ingestion
#16
Philippe Richard, Lymperis P Koziris, Mathieu Charbonneau, Catherine Naulleau, Jonathan Tremblay, François Billaut
PURPOSE: Nitrate supplementation can increase tolerance to high-intensity work rates, however limited data exist on the recovery of performance. We tested whether 5 days of nitrate supplementation could improve repeated time-trial performance in speed skating. METHODS: Using a double-blind, placebo-controlled, crossover design, 9 international-level short-track speed skaters ingested one high (juice blend, ~6.5mmol nitrate; HI) or low dose (juice blend, ~1mmol nitrate; LO) per day on days 1-4...
May 10, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29745738/effect-of-prior-fatiguing-sport-specific-exercise-on-field-hockey-passing-ability
#17
Enzo Hollville, Vincent Le Croller, Yoshihiro Hirasawa, Rémi Husson, Giuseppe Rabita, Franck Brocherie
PURPOSE: This study aimed to evaluate the effect of multiple sets of repeated-sprint ability (RSA) induced fatigue on subsequent passing skill performance among field hockey. METHODS: Ten elite U-21 male field hockey players performed five sets of a combination of RSA test (6 × 20 m - 20 s of passive recovery) followed by a 1-min passing skill test (passing reception with subsequent passes at a pre-designed target). Fastest sprint time and cumulated sprint time for RSA test; total number of balls played, targeted and passing accuracy (number of balls targeted / total number of balls played) for passing skill test; heart rate (HR), blood lactate concentration ([La-]) and rating of perceived exertion (RPE) were collected throughout the protocol...
May 10, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29745219/changes-in-doppler-echocardiography-depending-on-type-of-elite-athletes-immediately-after-maximal-exercise
#18
Saejong Park, Young J Moon, Gi-Byoung Nam, Young-Joo Kim
BACKGROUND: This study explores physiologic differences in the cardiac structure and function of elite athletes during the resting state and immediately after maximum exercise by training type compared to a healthy people of a CG. METHODS: The study focuses on elite middle-long distance group (MLDG), weightlifter group (WG), and a control group (CG). Cardiac structure, systolic function, and diastolic function were measured for all subjects at resting state and immediately after maximum exercise using echocardiography...
May 9, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29744054/a-quick-relaxation-exercise-for-people-with-chronic-obstructive-pulmonary-disease-explorative-randomized-controlled-trial
#19
Eleonora Volpato, Paolo Banfi, Antonello Nicolini, Francesco Pagnini
Background: People with Chronic Obstructive Pulmonary Disease (COPD) suffer from dyspnoea, which may be increased by anxiety. Previous studies suggest that relaxation techniques may have positive effects in pulmonary rehabilitation. The main aim of this study is to explore the clinical impact of a quick, one-session, relaxation training for people with COPD. Methods: In this perspective, 38 participants with COPD were recruited and randomly assigned to listen to a relaxing audio or to watch a neutral stimulus, during their routine exams...
2018: Multidisciplinary Respiratory Medicine
https://www.readbyqxmd.com/read/29742746/comparison-of-psychological-and-physiological-responses-to-imposed-vs-self-selected-high-intensity-interval-training
#20
Erin Kellogg, Cheyann Cantacessi, Olivia McNamer, Heather Holmes, Robert von Bargen, Richard Ramirez, Daren Gallagher, Stacy Vargas, Ben Santia, Karen Rodriguez, Todd A Astorino
Kellogg, E, Cantacessi, C, McNamer, O, Holmes, H, von Bargen, R, Ramirez, R, Gallagher, D, Vargas, S, Santia, B, Rodriguez, K, and Astorino, TA. Comparison of psychological and physiological responses to imposed vs. self-selected high-intensity interval training. J Strength Cond Res XX(X): 000-000, 2018-High-intensity interval training elicits similar physiological adaptations as moderate intensity continuous training (MICT). Some studies report greater enjoyment to a bout of high-intensity interval exercise (HIIE) vs...
May 8, 2018: Journal of Strength and Conditioning Research
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