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https://www.readbyqxmd.com/read/28719865/antioxidant-effect-of-exercise-exploring-the-role-of-the-mitochondrial-complex-i-superassembly
#1
J R Huertas, S Al Fazazi, A Hidalgo-Gutierrez, L C López, R A Casuso
Mitochondrial respiratory complexes become assembled into supercomplexes (SC) under physiological conditions. One of the functional roles of these entities is the limitation of reactive oxygen species (ROS) produced by complex I (CI) of the respiratory chain. We sought to determine whether the systemic antioxidant effect of exercise is mediated by the assembly of mitochondrial CIs into SCs in rats. Male Wistar rats were exercise trained or remained sedentary for ten weeks; then, blood samples were collected, and the gastrocnemius muscle was isolated...
July 11, 2017: Redox Biology
https://www.readbyqxmd.com/read/28719766/energy-expenditure-of-standing-compared-to-sitting-while-conducting-office-tasks
#2
Jill Burns, Cuisle Forde, Sara Dockrell
Objectives This study aimed to investigate the energy expenditure of common office-based tasks. The objectives were to: (a) test the classification of tasks as sedentary or light-intensity physical activity and (b) compare the energy expenditure of tasks under two postural conditions (sitting and standing). Background The sedentary nature of office work has been highlighted as a health risk, and strategies to reduce sedentary behavior at work have been developed. However, there is limited evidence to guide the utilization of sit-stand workstations in the workplace for metabolic health benefits...
July 1, 2017: Human Factors
https://www.readbyqxmd.com/read/28719683/association-between-structured-physical-activity-and-sedentary-time-in-older-adults
#3
Amal A Wanigatunga, Walter T Ambrosius, W Jack Rejeski, Thomas M Gill, Nancy W Glynn, Catrine Tudor-Locke, Todd M Manini
No abstract text is available yet for this article.
July 18, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28719620/endurance-performance-and-energy-metabolism-during-exercise-in-mice-with-a-muscle-specific-defect-in-the-control-of-branched-chain-amino-acid-catabolism
#4
Minjun Xu, Yasuyuki Kitaura, Takuya Ishikawa, Yoshihiro Kadota, Chihaya Terai, Daichi Shindo, Takashi Morioka, Miki Ota, Yukako Morishita, Kengo Ishihara, Yoshiharu Shimomura
It is known that the catabolism of branched-chain amino acids (BCAAs) in skeletal muscle is suppressed under normal and sedentary conditions but is promoted by exercise. BCAA catabolism in muscle tissues is regulated by the branched-chain α-keto acid (BCKA) dehydrogenase complex, which is inactivated by phosphorylation by BCKA dehydrogenase kinase (BDK). In the present study, we used muscle-specific BDK deficient mice (BDK-mKO mice) to examine the effect of uncontrolled BCAA catabolism on endurance exercise performance and skeletal muscle energy metabolism...
2017: PloS One
https://www.readbyqxmd.com/read/28718251/comparison-of-dietary-practices-and-body-mass-index-among-educated-housewives-and-working-women-in-karachi
#5
Lubna Raza, Tahira Mohsin Ali, Abid Hasnain
BACKGROUND: Body Mass Index (BMI) is considered as a major determinant of health. The objective of study was to find out differences between dietary practices, as well as BMI in educated housewives and working woman. It is supposed that both study groups may have difference in work pressures with resultant diverse preferences for food. This can affect health status particularly in relation to obesity in women. Furthermore, we selected participants with 14 years' education expecting basic awareness of healthful diet...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28718204/detrital-shadows-estuarine-food-web-connectivity-depends-on-fluvial-influence-and-consumer-feeding-mode
#6
Emily Howe, Charles A Simenstad, Andrea Ogston
We measured the influence of landscape setting on estuarine food web connectivity in five macrotidal Pacific Northwest estuaries across a gradient of freshwater influence. We used stable isotopes (δ(13) C, δ(15) N, δ(34) S) in combination with a Bayesian mixing model to trace primary producer contributions to suspension- and deposit-feeding bivalve consumers (Mytilus trossulus and Macoma nasuta) transplanted into three estuarine vegetation zones: emergent marsh, mudflat, Japanese eelgrass (Zostera japonica), and native eelgrass (Zostera marina)...
July 17, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28717827/individual-and-environmental-correlates-of-objectively-measured-physical-activity-and-sedentary-time-in-adults-from-curitiba-brazil
#7
Priscila Bezerra Gonçalves, Pedro Curi Hallal, Adriano Akira Ferreira Hino, Rodrigo Siqueira Reis
OBJECTIVES: This study assessed the association of individual and neighborhood environment characteristics and objectively measured physical activity (PA) and sedentary time (ST) in adults from Curitiba, Brazil. METHODS: A population-based cross-sectional study was conducted through face-to-face household interviews in 2010. The analytic sample included 305 adults aged 20-65 years recruited from 32 census tracts selected according to neighborhood walkability and socioeconomic status...
July 17, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/28717653/individual-social-and-environmental-correlates-of-active-transportation-patterns-in-french-women
#8
Camille Perchoux, Christophe Enaux, Jean-Michel Oppert, Mehdi Menai, Hélène Charreire, Paul Salze, Christiane Weber, Serge Hercberg, Thierry Feuillet, Franck Hess, Célina Roda, Chantal Simon, Julie-Anne Nazare
The objectives were (1) to define physical activity (PA) and sedentary behaviors (SB) patterns in daily life contexts (work, leisure, and transportation) in French working women from NutriNet-Santé web-cohort and (2) to identify pattern(s) of active transportation and their individual, social, and environmental correlates. 23,432 participants completed two questionnaires to evaluate PA and SB in daily life contexts and individual representations of residential neighborhood and transportation modes. Hierarchical cluster analysis was performed which identified 6 distinct movement behavior patterns: (i) active occupation, high sedentary leisure, (ii) sedentary occupation, low leisure, (iii) sedentary transportation, (iv) sedentary occupation and leisure, (v) active transportation, and (vi) active leisure...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28717626/muscle-fatigue-in-participants-of-indoor-cycling
#9
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/28717531/the-role-of-vitamin-d-supplementation-on-erectile-function
#10
REVIEW
Raidh A Talib, Kareim Khalafalla, Önder Cangüven
In the last few years growing evidence highlighted vitamin D (VD) deficiency is one of the several dynamics that associates with increased atherosclerotic cardiovascular (ASCV) diseases. ASCV diseases and erectile dysfunction (ED) share common risk factors such as diabetes mellitus, hypertension, smoking, hyperlipidemia, and a sedentary lifestyle. The aim of this review was to summarize current progress in VD research by focusing effect of low VD level on different body systems and erectile function. Here we examine research linking VD deficiency and ED and discuss how VD influences ED and its classic risk factors that also associate to increased ED risk...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28716955/acute-exercise-enhances-the-consolidation-of-fear-extinction-memory-and-reduces-conditioned-fear-relapse-in-a-sex-dependent-manner
#11
Courtney A Bouchet, Brian A Lloyd, Esteban C Loetz, Caroline E Farmer, Mykola Ostrovskyy, Natalie Haddad, Rebecca M Foright, Benjamin N Greenwood
Fear extinction-based exposure therapy is the most common behavioral therapy for anxiety and trauma-related disorders, but fear extinction memories are labile and fear tends to return even after successful extinction. The relapse of fear contributes to the poor long-term efficacy of exposure therapy. A single session of voluntary exercise can enhance the acquisition and consolidation of fear extinction in male rats, but the effects of exercise on relapse of fear after extinction are not well understood. Here, we characterized the effects of 2 h of voluntary exercise during the consolidation phase of contextual or auditory fear extinction learning on long-term fear extinction memory and renewal in adult, male and female, Long-Evans rats...
August 2017: Learning & Memory
https://www.readbyqxmd.com/read/28716522/exercise-individualized-by-trimpi-method-reduces-arterial-stiffness-in-early-onset-type-2-diabetic-patients-a-randomized-controlled-trial-with-aerobic-interval-training
#12
Alfonso Bellia, Ferdinando Iellamo, Elisa De Carli, Aikaterini Andreadi, Elvira Padua, Mauro Lombardo, Giuseppe Annino, Francesca Campoli, Sara Tartaglione, Stefano D'Ottavio, David Della-Morte, Davide Lauro
BACKGROUND: Arterial stiffness (AS) and baroreflex sensitivity (BRS) are subclinical markers of vascular diseases in type 2 diabetes (T2D). We evaluated the effects of aerobic interval training (AIT), with loads prescribed according to individual heart rate and lactate profiling obtained during a baseline treadmill test (TRIMPi method), on AS and BRS in patients with early-onset T2D without cardiovascular complications. POPULATION STUDY AND METHODS: Twenty-two sedentary overweight T2D patients (aged 57±7years) were randomized to 12-weeks open-label of supervised AIT by TRIMPi (n=8) or unsupervised physical activity as per usual care (SOC) (n=11)...
June 17, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28715640/voluntary-running-of-defined-distances-reduces-body-adiposity-and-its-associated-inflammation-in-c57bl-6-mice-fed-a-high-fat-diet
#13
Lin Yan, Sneha Sundaram, Forrest H Nielsen
This study investigated the effect of voluntary running of defined distances on body adiposity in male C57BL/6 mice fed a high-fat diet. Mice were assigned to six groups and fed a standard AIN93G diet (sedentary) or a modified high-fat AIN93G diet (sedentary, unrestricted running, or 75%, 50% or 25% of unrestricted running) for 12 weeks. The average running distance was 8.3, 6.3, 4.2 and 2.1 km/day for the unrestricted, 75%, 50%, and 25% of unrestricted runners, respectively. Body adiposity was 46% higher in sedentary mice when fed the high-fat instead of the standard diet...
July 17, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28715596/influence-of-physical-exercise-on-%C3%AE-amyloid-%C3%AE-synuclein-and-tau-accumulation-an-in-vitro-model-of-oxidative-stress-in-human-red-blood-cells
#14
C Iofrida, S Daniele, D Pietrobono, J Fusi, F Galetta, M L Trincavelli, U Bonuccelli, F Franzoni, C Martini
A common pathological feature of neurodegenerative disorders (NDs), such as Alzheimer's (AD) and Parkinson's (PD) diseases, is the abnormal accumulation and misfolding of specific proteins, primarily α-synuclein (α-syn), β-amyloid1-42 (Aβ) and tau, in brain and in peripheral tissues too. Oxidative stress has been proved to be involved in NDs at various levels and, in particular, in such protein alterations, on the contrary physical activity is emerging as a counteracting factor in NDs. In the present work, the content of Aβ, α-syn and tau in red blood cells (RBCs) derived from ten endurance athletes (ATHL) and ten sedentary volunteers (SED) were compared before and after in vitrooxidative stress treatment...
July 1, 2017: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/28715595/lifestyle-physical-activity-and-cognitive-functions-the-impact-on-the-scores-of-montreal-cognitive-assessment-moca
#15
A Innocenti, D M Cammisuli, D Sgromo, F Franzoni, J Fusi, F Galetta, C Pruneti
The Montreal Cognitive Assessment (MoCA) is a rapid screening tool, including subtests to assess several cognitive domains, developed to detect MCI from normal ageing cognitive changes. Several validation and normative studies have conducted around the world considering the influences of age and education on the MoCA score, but none takes into account the lifestyle and habits. However, lifestyles, and particularly physical activity (PA) have been positively associated with both physical and mental health in elderly...
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
#16
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/28715439/knowledge-attitude-and-perceived-stigma-towards-tuberculosis-among-pastoralists-do-they-differ-from-sedentary-communities-a-comparative-cross-sectional-study
#17
Bezawit Temesgen Sima, Tefera Belachew, Fekadu Abebe
BACKGROUND: Ethiopia is ninth among the world high tuberculosis (TB) burden countries, pastoralists being the most affected population. However, there is no published report whether the behavior related to TB are different between pastoralist and the sedentary communities. Therefore, the main aim of this study is to assess the pastoralist community knowledge, attitude and perceived stigma towards tuberculosis and their health care seeking behavior in comparison to the neighboring sedentary communities and this may help to plan TB control interventions specifically for the pastoralist communities...
2017: PloS One
https://www.readbyqxmd.com/read/28715424/atrophy-of-gluteus-maximus-among-women-with-a-history-of-chronic-low-back-pain
#18
Amy H Amabile, John H Bolte, Saskia D Richter
BACKGROUND: Although the relationship between low back pain (LBP) and the size of certain trunk muscles has been extensively studied, the relationship between gluteus maximus (GM) size and LBP has been only minimally examined. Determining whether such a relationship exists would help improve our understanding of the etiology of LBP, and possibly provide a rationale for the use of therapeutic exercise interventions targeting GM with LBP patients. The objective of this study was to compare gluteus maximus cross-sectional area in individuals with chronic LBP, and in a group of individuals without LBP...
2017: PloS One
https://www.readbyqxmd.com/read/28714900/a-nutrigenomic-approach-to-non-alcoholic-fatty-liver-disease
#19
REVIEW
Paola Dongiovanni, Luca Valenti
Following the epidemics of obesity due to the consumption of high-calorie diet and sedentary lifestyle, nonalcoholic fatty liver disease (NAFLD) is now the leading cause of liver disease in Western countries. NAFLD is epidemiologically associated with metabolic syndrome and insulin resistance, and in susceptible individuals it may progress to cirrhosis and hepatocellular carcinoma. Genetic factors play a key role in NAFLD predisposition by interacting with nutritional and other environmental factors. To date, there is no drug therapy for the treatment of NAFLD, and the main clinical recommendation is lifestyle modification...
July 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28714789/the-role-of-physical-activity-in-the-association-between-resilience-and-mental-health-in-older-adults
#20
Maria Priscila Wermelinger Ávila, Jimilly Caputo Corrêa, Alessandra Lamas Granero Lucchetti, Giancarlo Lucchetti
The aim of this study is to evaluate the relationship between resilience and mental health in older adults and how physical activity influences that relationship. A cross-sectional study was carried out with 312 older adults (179 active and 133 sedentary classified by IPAQ). Considering the whole sample, an inverse relationship was found for resilience (Wagnild-Young's Resilience Scale) with depression and stress (DASS-21). Among the sedentary, in spite of there not being an association between total resilience and mental health, there was an inverse relationship for the "meaning of life" component of the resilience and depression scale...
July 17, 2017: Journal of Aging and Physical Activity
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