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Aerobic threshold

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https://www.readbyqxmd.com/read/28935128/quality-of-life-and-sleep-quality-are-similarly-improved-after-aquatic-or-dry-land-aerobic-training-in-patients-with-type-2-diabetes-a-randomized-clinical-trial
#1
Rodrigo S Delevatti, Felipe Barreto Schuch, Ana Carolina Kanitz, Cristine L Alberton, Elisa Corrêa Marson, Salime Chedid Lisboa, Carolina Dertzbocher Feil Pinho, Luciana Peruchena Bregagnol, Maríndia Teixeira Becker, Luiz Fernando M Kruel
OBJECTIVES: To compare the effects of two aerobic training models in water and on dry-land on quality of life, depressive symptoms and sleep quality in patients with type 2 diabetes. DESIGN: Randomized clinical trial. METHODS: Thirty-five patients with type 2 diabetes were randomly assigned to aquatic aerobic training group (n=17) or dry-land aerobic training group (n=18). Exercise training length was of 12 weeks, performed in three weekly sessions (45min/session), with intensity progressing from 85% to 100% of heart rate of anaerobic threshold during interventions...
September 6, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28930880/cycling-power-outputs-predict-functional-threshold-power-and-maximum-oxygen-uptake
#2
Joshua Denham, John Scott-Hamilton, Amanda D Hagstrom, Adrian J Gray
Functional threshold power (FTP) has emerged as a correlate of lactate threshold and is commonly assessed by recreational and professional cyclists for tailored exercise programing. To identify whether results from traditional aerobic and anaerobic cycling tests could predict FTP and V˙ O2max, we analysed the association between estimated FTP, maximum oxygen uptake (V˙ O2max [mlkgmin]) and power outputs obtained from a maximal cycle ergometry cardiopulmonary exercise test (CPET) and a 30-s Wingate test in a heterogeneous cohort of cycle-trained and untrained individuals (N=40, mean±SD; age: 32...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28912658/a-systematic-method-to-detect-the-metabolic-threshold-from-gas-exchange-during-incremental-exercise
#3
Brett A Dolezal, Thomas W Storer, Eric V Neufeld, Stephanie Smooke, Chi-Hong Tseng, Christopher B Cooper
Incremental exercise consists of three domains of exercise intensity demarcated by two thresholds. The first of these thresholds, derived from gas exchange measurements, is defined as the metabolic threshold (V̇O2θ) above which lactate accumulates. Correctly and reliably identified, V̇O2θ is a non-invasive, sub-maximal marker of aerobic function with practical value. This investigation compared variability in selection of V̇O2θ among interpreters with different levels of experience as well as from auto-detection algorithms employed by a commercially available metabolic cart (MC)...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28905699/sphingomonas-jeddahensis-sp-nov-isolated-from-saudi-arabian-desert-soil
#4
Jan Hendrik Wübbeler, Fred Bernd Oppermann-Sanio, Andrea Ockenfels, Annika Röttig, Alena Osthaar-Ebker, Susanne Verbarg, Anja Poehlein, Mohamed H Madkour, Ahmed M Al-Ansari, Naief H Almakishah, Rolf Daniel, Alexander Steinbüchel
A novel Sphingomonas strain was isolated from a sample of desert soil collected near Jeddah in Saudi Arabia. A polyphasic approach was performed to characterize this strain, initially designated as G39T. Cells of strain G39T are motile, Gram-negative, catalase- and oxidase-positive. The strain is able to grow aerobically at 20-35 °C, pH 6.5-8 and tolerates up to 4 % (w/v) NaCl. Based on 16S rRNA gene sequence similarity, the closest relative type strains of G39T are Sphingomonas mucosissima DSM 17494T (98...
September 14, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28904232/effects-of-high-versus-moderate-intensity-training-on-neuroplasticity-and-functional-recovery-after-focal-ischemia
#5
Caroline Pin-Barre, Annabelle Constans, Jeanick Brisswalter, Christophe Pellegrino, Jérôme Laurin
BACKGROUND AND PURPOSE: This study was designed to compare the effects of high-intensity interval training (HIT) and moderate-intensity aerobic training (MOD) on functional recovery and cerebral plasticity during the first 2 weeks after cerebral ischemia. METHODS: Rats were randomized as follows: control (n=15), SHAM (n=9), middle cerebral artery occlusion (n=13), middle cerebral artery occlusion at day 1 (n=7), MOD (n=13), and HIT (n=13). Incremental tests were performed at day 1 (D1) and 14 (D14) to identify the running speed associated with the lactate threshold (SLT) and the maximal speed (Smax)...
September 13, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28879617/high-but-not-moderate-intensity-endurance-training-increases-pain-tolerance-a-randomised-trial
#6
Thomas J O'Leary, Johnny Collett, Ken Howells, Martyn G Morris
PURPOSE: To examine the effect of high-intensity interval training (HIIT) compared to volume-matched moderate-intensity continuous training (CONT) on muscle pain tolerance and high-intensity exercise tolerance. METHODS: Twenty healthy adults were randomly assigned (1:1) to either 6 weeks of HIIT [6-8 × 5 min at halfway between lactate threshold and maximal oxygen uptake (50%Δ)] or volume-matched CONT (~60-80 min at 90% lactate threshold) on a cycle ergometer...
September 6, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28875898/microbacterium-hibisci-sp-nov-isolated-from-rhizosphere-of-mugunghwa-hibiscus-syriacus-l
#7
Zheng-Fei Yan, Pei Lin, Kyung-Hwa Won, Jung-Eun Yang, Chang-Tian Li, MooChang Kook, Qi-Jun Wang, Tae-Hoo Yi
A Gram-stain-positive, aerobic, non-motile, short-rod shaped actinobacterium, designated THG-T2.14T, was isolated from soil sampled from the rhizosphere of mugunghwa. Growth occurred at 10-40 °C (optimum 30 °C), at pH 5.0-10.0 (optimum 7.0) and at 0-7.0 % NaCl (optimum 3.0 %). Based on 16S rRNA gene sequence analysis, the nearest phylogenetic neighbours of strain THG-T2.14T were identified as Microbacterium yannicii DSM 23203T (98.8 %), Microbacterium trichothecenolyticum DSM 8608T (98.8 %), Microbacterium arthrosphaerae DSM 22421T (98...
September 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28869831/characterisation-of-volatile-organic-compounds-vocs-released-by-the-composting-of-different-waste-matrices
#8
Marco Schiavon, Luca Matteo Martini, Cesare Corrà, Marco Scapinello, Graziano Coller, Paolo Tosi, Marco Ragazzi
The complaints arising from the problem of odorants released by composting plants may impede the construction of new composting facilities, preclude the proper activity of existing facilities or even lead to their closure, with negative implications for waste management and local economy. Improving the knowledge on VOC emissions from composting processes is of particular importance since different VOCs imply different odour impacts. To this purpose, three different organic matrices were studied in this work: dewatered sewage sludge (M1), digested organic fraction of municipal solid waste (M2) and untreated food waste (M3)...
September 1, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28865866/postexercise-hypotension-during-different-water-based-concurrent-training-intrasession-sequences-in%C3%A2-young-women
#9
Stephanie Santana Pinto, Daniel Umpierre, Hector Kerchirne Ferreira, Gabriela Neves Nunes, Rodrigo Ferrari, Cristine Lima Alberton
The purpose of the study was to compare the acute effects of water-based resistance-aerobic (RA) and aerobic-resistance (AR) sequences on systolic blood pressure, diastolic blood pressure (DBP), and mean blood pressure (MBP) in young women. Thirteen active women participated in four sessions: (1) exercises familiarization, (2) aquatic maximal test to determine the heart rate (HR) corresponding to the anaerobic threshold (HRAT), (3) concurrent protocol RA, and (4) concurrent protocol AR. Both protocols were initiated with the blood pressure measurements at rest in supine position...
August 24, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28859414/physiological-and-biomechanical-mechanisms-of-distance-specific-human-running-performance
#10
M A Thompson
Running events range from 60-m sprints to ultra-marathons covering 100 miles or more, which presents an interesting diversity in terms of the parameters for successful performance. Here, we review the physiological and biomechanical variations underlying elite human running performance in sprint to ultramarathon distances. Maximal running speeds observed in sprint disciplines are achieved by high vertical ground reaction forces applied over short contact times. To create this high force output, sprint events rely heavily on anaerobic metabolism, as well as a high number and large cross-sectional area of type II fibers in the leg muscles...
August 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28820124/bacillus-wudalianchiensis-sp-nov-isolated-from-grass-soils-of-the-wudalianchi-scenic-area
#11
Bo Liu, Guo-Hong Liu, Cetin Sengonca, Peter Schumann, Jie-Ping Wang, Yu-Jing Zhu, Hai-Feng Zhang
A Gram-stain-positive, rod-shaped, endospore-forming, aerobic bacterium, designated FJAT-27215T, was isolated from grass soil collected from Wudalianchi in the Heilongjiang Province of China. Growth was observed at 10-60 °C (optimum 30 °C), in 0 and 3.0 % NaCl (optimum 0 %) and at pH 5.0-10.0 (optimum 7.0), respectively. The cell-wall peptidoglycan contained meso-diaminopimelic acid and the isoprenoid quinone was MK7. The main fatty acids were iso-C15 : 0, anteiso-C15 : 0, anteiso-C17 : 0, and iso-C16 : 0...
August 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28820120/spiribacter-aquaticus-sp-nov-a-novel-member-of-the-genus-spiribacter-isolated-from-a-saltern
#12
María José León, Borja Aldeguer-Riquelme, Josefa Antón, Cristina Sánchez-Porro, Antonio Ventosa
A moderately halophilic bacterium, designated strain SP30T, was isolated from a solar saltern located in Santa Pola, Alicante, on the East coast of Spain. It was a Gram-stain-negative, strictly aerobic bacterium, able to grow in 7.5-25 % (w/v) NaCl and optimally in 12.5 % (w/v) NaCl. Phylogenetic analyses, based on 16S rRNA gene sequences, showed that the novel isolate is a member of the genus Spiribacter, with the most closely related species being Spiribacter roseus SSL50T (99.9 % sequence similarity) and Spiribacter curvatus UAH-SP71T (99...
August 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28820094/massilia-solisilvae-sp-nov-massilia-terrae-sp-nov-and-massilia-agilis-sp-nov-isolated-from-forest-soil-in-south-korea-by-using-a-newly-developed-culture-method
#13
Khulan Altankhuu, Jaisoo Kim
Using a newly developed culture method for not yet cultured soil bacteria, three Gram-stain-negative, aerobic, non-spore-forming, motile, and rod-shaped bacteria (strain designated J18T, J11T and J9T) were isolated from forest soil at Kyonggi University, South Korea. Isolates were subjected to a taxonomic study by using a polyphasic approach. According to a phylogenetic tree based on 16S rRNA gene sequences, strains J18T, J11T and J9T belonged to the genus Massilia and clustered with Massilia haematophila CCUG 38318T (similarity range: 97...
August 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28805463/oxygen-uptake-at-aerobic-threshold-is-inversely-associated-with-fatal-cardiovascular-and-all-cause-mortality-events
#14
Setor K Kunutsor, Sudhir Kurl, Hassan Khan, Francesco Zaccardi, Rainer Rauramaa, Jari A Laukkanen
PURPOSE: We aimed to assess the associations of oxygen uptake at aerobic threshold (VO2 at AT) with cardiovascular and all-cause mortality. DESIGN: VO2 at AT was assessed in 1663 middle-aged men in a cohort study. Hazard ratios (HRs) were calculated for sudden cardiac death (SCD), fatal coronary heart disease (CHD) and cardiovascular disease (CVD) and all-cause mortality. RESULTS: During a median follow-up of 25.6 years, 138 SCDs, 209 fatal CHDs, 333 fatal CVDs and 719 all-cause mortality events occurred...
August 22, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28804812/predominance-of-comorbidities-in-the-detriment-of-daily-activity-in-sarcoidosis-patients
#15
S Kostorz, D Jastrzębski, M Sikora, A Zebrowska, A Margas, D Stepanik, H Swinder, D Ziora
Sarcoidosis may affect lung function, working ability, overall mobility, and daily activity. In the present study we performed an analysis of clinical settings in patients with sarcoidosis to disentangle its influence on daily physical activity (PA). PA assessment (number of steps per day, daily energy expenditure) was performed by accelerometry during consecutive 7 days after discharge from hospital. Thirty patients with sarcoidosis, aged 46.4 ± 10.5, were enrolled in the study. Clinical data (age, gender, steroid consumption, weight, and comorbidities), lung function tests (forced expiratory volume in one second - FEV1, forced vital capacity - FVC, and lung diffusion for carbon monoxide - DLCO), mobility (6-minute walk test- 6MWT) and physical performance (oxygen consumption at anaerobic threshold - VO2/AT) were estimated...
August 15, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28798467/acclimation-to-prolonged-hypoxia-alters-hemoglobin-isoform-expression-and-increases-hemoglobin-oxygen-affinity-and-aerobic-performance-in-a-marine-fish
#16
Yihang K Pan, Rasmus Ern, Phillip R Morrison, Colin J Brauner, Andrew J Esbaugh
Hemoglobin (Hb) multiplicity is common in fish, yet despite its ubiquitous nature, the functional significance is unclear. Here we explore the hypothesis that Hb multiplicity plays a role in hypoxia tolerance using the red drum (Sciaenops ocellatus). Red drum is an economically and ecologically important species native to coastal regions and estuaries of the Gulf of Mexico - habitats that routinely experience pronounced hypoxic events. Using a transcriptomic approach, we demonstrate that red drum red blood cells express 7 and 5 Hbα and Hbβ isoforms, respectively...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28792369/marinobacter-aquaticus-sp-nov-a-moderately-halophilic-bacterium-from-a-solar-saltern
#17
María José León, Cristina Sánchez-Porro, Antonio Ventosa
A moderately halophilic bacterium designated strain M6-53T was isolated from water of a pond from a marine saltern located in Huelva, south-west Spain. Cells of the strain were Gram-stain-negative, strictly aerobic, motile, slightly curved rods, able to grow in media containing 5-25 % (w/v) NaCl (optimal growth at 10 %, w/v), at temperatures from 20 to 40 °C (optimally at 37 °C) and at pH 6.5-9 (optimally at pH 7.0). Phylogenetic analysis based on 16S rRNA gene sequences placed the new isolate within the genus Marinobacter, with the type strains of the most closely related species being Marinobacter persicus IBRC-M 10445T (98...
August 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28779920/short-term-water-based-aerobic-training-promotes-improvements-in-aerobic-conditioning-parameters-of-mature-women
#18
Rochelle Rocha Costa, Thais Reichert, Leandro Coconcelli, Nicole Monticelli Simmer, Natália Carvalho Bagatini, Adriana Cristine Koch Buttelli, Cláudia Gomes Bracht, Ricardo Stein, Luiz Fernando Martins Kruel
Aging is accompanied by a decrease in aerobic capacity. Therefore, physical training has been recommended to soften the effects of advancement age. The aim of this study was to assess the effects of a short-term water-based aerobic training on resting heart rate (HRrest), heart rate corresponding to anaerobic threshold (HRAT), peak heart rate (HRpeak), percentage value of HRAT in relation to HRpeak and test duration (TD) of mature women. Twenty-two women (65.91 ± 4.83 years) were submitted to a five-week water-based interval aerobic training...
August 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/28771118/marinomonas-epiphytica-sp-nov-isolated-from-a-marine-intertidal-macroalga
#19
Anup Kumar Ojha, Ashish Verma, Yash Pal, Deepak Bhatt, Shanmugam Mayilraj, Srinivasan Krishnamurthi
A novel Gram-stain-negative, aerobic marine bacterial strain, SAB-3T, was isolated from brown macroalgae (Dictyota sp.) growing in the Arabian sea, Goa, India. The strain grew optimally at 30 °C, with 2.0-4.0 % (w/v) NaCl and at pH 7.0 on marine agar medium. Strain SAB-3T was unable to hydrolyse aesculin and did not grow in the presence of rifamycin but showed resistance to antibiotics such as cefadroxil and co-trimoxazole. The major fatty acids were summed feature 8 (C18 : 1ω7c/C18 : 1ω6c), summed feature 3 (C16 : 1ω7c/C16 : 1ω6c) and C16 : 0, and Q-8 was the major ubiquinone...
August 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28758790/the-accuracy-of-the-sysmex-uf-1000i-in-urine-bacterial-detection-compared-with-the-standard-urine-analysis-and-culture
#20
Patrick Erdman, Brian Anderson, J Christopher Zacko, Kirk Taylor, Keri Donaldson
CONTEXT: - Urinary tract infections are characterized by the presence of microbial pathogens within the urinary tract. They represent one of the most common infections in hospitalized and clinic patients. OBJECTIVES: - To model the parameters of the Sysmex UF-1000i to the gold standard, urine culture, and to compare the detection of dipstick leukocyte esterase and nitrates to urine cultures and UF-1000i results. DESIGN: - Data were compared from urine samples collected in sterile containers for bacterial culture and microscopic analysis...
July 31, 2017: Archives of Pathology & Laboratory Medicine
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