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https://www.readbyqxmd.com/read/29351661/estimation-of-measurement-uncertainty-in-quantitation-of-benzoylecgonine-bze-and-11-nor-%C3%AE-9-thc-9-carboxylic-acid-thca
#1
Darryl P Arfsten, Erick Roman Perez, Neal C Goebel
Calculating measurement uncertainty is a helpful exercise for identifying components or steps in a forensic analytical procedure that contribute to measurement variance. In this study, we used a bottom up approach to identify components in our procedures that contribute to measurement variance in our Department of Defense (DoD) Drug Demand Reduction Program (DDRP) Gas Chromatography Mass Spectroscopy (GCMS) analytical procedures for benzoylecgonine (BZE) and the THC metabolite, 11-nor-Δ9-THC-9-carboxylic acid (THCA) at 125% the DDRP concentration threshold (cutoff)...
January 17, 2018: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/29351646/effect-of-a-postpartum-training-program-on-prevalence-of-diastasis-recti-abdominis-in-postpartum-primiparous-women-a-randomized-controlled-trial
#2
Sandra L Gluppe, Gunvor Hilde, Merete K Tennfjord, Marie E Engh, Kari Bø
Background: Diastasis recti abdominis affects a significant number of women during the prenatal and postnatal period. Objective: The objective was to evaluate the effect of a postpartum training program on prevalence of diastasis recti abdominis. Design: The design was a secondary analysis of an assessor-masked randomized controlled trial. Methods: One hundred and seventy-five primiparous women (mean age 29.8±4.1) were randomized to an exercise or control group...
January 17, 2018: Physical Therapy
https://www.readbyqxmd.com/read/29351625/physical-activity-weight-and-functional-limitations-in-elderly-spanish-people-the-national-health-survey-2009-2014
#3
Pedro A Latorre-Román, José A Laredo-Aguilera, Felipe García-Pinillos, Víctor M Soto-Hermoso, Juan M Carmona-Torres
Background: The purpose of this study was to analyze physical activity (PA), functional limitations, weight status, self-perceived health status and disease or chronic health problems in older people aged 65 and over using the European Health Survey in Spain (EHSS) conducted one in 2009 and one in 2014. Methods: This study included 12,546 older people, 6026 [2330 men and 3696 women; age (Mean, SD) =75.61 ± 7.11 years old] in 2009 and 6520 [2624 men and 3896 women; age (Mean, SD) =75...
January 16, 2018: European Journal of Public Health
https://www.readbyqxmd.com/read/29351551/periodontal-health-status-and-lung-function-in-two-norwegian-cohorts
#4
Antonio Manuel Pérez Barrionuevo, Francisco Gómez Real, Jannicke Igland, Ane Johannessen, Ernst Omenaas, Karl A Franklin, Laura Pérez Barrionuevo, Anne Nordrehaug Åstrøm, Cecilie Svanes, Randi Jacobsen Bertelsen
RATIONALE AND OBJECTIVES: The oral cavity is united with the airways, and thus poor oral health may affect respiratory health. However, data on the interaction of periodontal and respiratory health is limited. We aimed to evaluate whether periodontal health status, assessed by the Community Periodontal Index (CPI), was related to lung function among young and middle-aged adults in two Norwegian cohorts. METHODS: Periodontal health status and lung function were measured among 656 participants in the Norwegian part of the European Community Respiratory Health Survey (ECHRS III) and the RHINESSA offspring study...
2018: PloS One
https://www.readbyqxmd.com/read/29351515/understanding-key-mechanisms-of-exercise-induced-cardiac-protection-to-mitigate-disease-current-knowledge-and-emerging-concepts
#5
Bianca C Bernardo, Jenny Y Y Ooi, Kate L Weeks, Natalie L Patterson, Julie R McMullen
The benefits of exercise on the heart are well recognized, and clinical studies have demonstrated that exercise is an intervention that can improve cardiac function in heart failure patients. This has led to significant research into understanding the key mechanisms responsible for exercise-induced cardiac protection. Here, we summarize molecular mechanisms that regulate exercise-induced cardiac myocyte growth and proliferation. We discuss in detail the effects of exercise on other cardiac cells, organelles, and systems that have received less or little attention and require further investigation...
January 1, 2018: Physiological Reviews
https://www.readbyqxmd.com/read/29351493/test-retest-reliability-of-the-unsupported-upper-limb-exercise-test-uulex-and-6-min-peg-board-ring-test-6pbrt-in-healthy-adult-individuals
#6
Vanessa Pereira Lima, Marcelo Velloso, Fabiana Damasceno Almeida, Bianca Carmona, Giane Amorim Ribeiro-Samora, Tania Janaudis-Ferreira
BACKGROUND: The unsupported upper-limb exercise (UULEX) and 6-min peg board ring tests (6PBRTs) have been developed to measure peak unsupported arm exercise capacity and arm endurance, respectively, in individuals with chronic obstructive pulmonary disease. These tests are valid and reproducible in this population; however, the reproducibility of healthy adults is currently unknown. OBJECTIVE: To determine the within-day test-retest reliability of the UULEX and 6PBRT in healthy adults...
January 19, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29351488/measurement-of-postprandial-glucose-fluxes-in-response-to-acute-and-chronic-endurance-exercise-in-healthy-humans
#7
Dale J Morrison, Greg M Kowalski, Eleonora Grespan, Andrea Mari, Clinton R Bruce, Glenn D Wadley
The effect of endurance exercise on enhancing insulin sensitivity and glucose flux has been well established with techniques such as the hyperinsulinemic clamp. Although informative, such techniques do not emulate the physiological postprandial state, and it remains unclear how exercise improves postprandial glycaemia. Accordingly, combining mixed meal tolerance testing and the triple-stable isotope glucose tracer approach, glucose fluxes (rates of meal glucose appearance (Ra), disposal (Rd) and endogenous glucose production (EGP)) were determined following acute endurance exercise (1h cycling; ~70% VO2max) and 4 weeks of endurance training (cycling 5d/wk)...
December 19, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29351473/sympathetically-mediated-cardiac-responses-to-isolated-muscle-metaboreflex-activation-following-exercise-are-modulated-by-body-position-in-humans
#8
André L Teixeira, Mauricio Daher, Mayara Souza, Plinio Santos Ramos, James P Fisher, Lauro C Vianna
Isolated muscle metaboreflex activation with post-handgrip exercise ischemia (PEI) increases sympathetic nerve activity and partially maintains the exercise-induced increase in blood pressure, but a smaller heart rate (HR) response occurs. The cardiopulmonary baroreceptors, mechanically sensitive receptors that respond to changes in central blood volume and pressure, are strongly associated with changes in body position and upon activation elicit reflex sympathoinhibition. Here, we tested the hypothesis that postural changes modulate the sympathetically-mediated cardiac response to PEI in humans...
December 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351468/gabaergic-contribution-to-the-muscle-mechanoreflex-mediated-heart-rate-responses-at-the-onset-of-exercise-in-humans
#9
André L Teixeira, Plinio Santos Ramos, Milena Samora, Jeann L Sabino-Carvalho, Djalma Rabelo Ricardo, Eduardo Colombari, Lauro C Vianna
Previous studies indicated that central GABAergic mechanisms are involved in the heart rate (HR) responses at the onset of exercise. Based on previous research that showed similar increases in HR during passive and active cycling, we reasoned that the GABAergic mechanisms involved in the HR responses at the exercise onset is primarily mediated by muscle mechanoreceptors afferents. Therefore, in this study we sought to determine if central GABA mechanisms are involved in the muscle mechanoreflex-mediated HR responses at the onset of exercise in humans...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351462/maximal-strength-training-induced-improvements-in-forearm-work-efficiency-are-associated-with-reduced-blood-flow
#10
Ole Kristian Berg, Stian Kwak Nyberg, Tobias Midtvedt Windedal, Eivind Wang
Maximal strength training (MST) improves work efficiency. However, since blood flow is greatly dictated by muscle contractions in arms during exercise, and vascular conductance is lower, it has been indicated that arms rely more upon adapting oxygen extraction than legs in response to the enhanced work efficiency. Thus, to investigate if metabolic and vascular responses are arm-specific, we utilized Doppler-ultrasound and a catheter placed in the subclavian vein to measure blood flow and a-vO2diff during steady state work in seven young males (24{plus minus}3(SD) years) following six-weeks of handgrip MST...
December 29, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351461/exercise-training-induces-enos-coupling-and-restores-relaxation-in-coronary-arteries-of-heart-failure-rats
#11
Gisele Kruger Couto, Suliana Mesquita Paula, Igor L Gomes-Santos, Carlos Eduardo Negrão, Luciana Venturini Rossoni
Exercise training (ET) has emerged as a non-pharmacological therapy for cardiovascular diseases because of its helpful milieu for improving vascular function. The aim of the present study was to assess whether ET reverses the alterations in vascular reactivity observed in heart failure (HF)-related coronary arteries and to elucidate the molecular mechanisms involved in these adjustments. Male Wistar rats were subjected to either coronary artery ligation or sham operation (SO). Four weeks after the surgery, the rats were divided into two groups: untrained HF (UHF) and exercise-trained HF (THF)...
January 5, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351416/acute-and-chronic-resistance-training-downregulates-select-line-1-retrotransposon-activity-markers-in-human-skeletal-muscle
#12
Matthew A Romero, C Brooks Mobley, Petey W Mumford, Paul A Roberson, Cody T Haun, Wesley C Kephart, James C Healy, Darren T Beck, Kaelin C Young, Jeffrey S Martin, Christopher M Lockwood, Michael D Roberts
Herein, we examined if acute or chronic resistance exercise affected markers of skeletal muscle LINE-1 retrotransposon activity. In study 1, 10 resistance-trained college-aged males performed three consecutive daily back squat sessions, and vastus lateralis biopsies were taken prior to (Pre), 2 h following session 1 (Post1), and 3 days following session 3 (Post2). In study 2, 13 untrained college-aged males performed a full-body resistance training program (3 d/wk), and vastus lateralis biopsies were taken prior to (week 0) and ~72 h following training cessation (week 12)...
December 20, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29351387/letter-to-the-editor-low-carb-meal-plan-and-postmeal-exercise
#13
Elsamma Chacko
No abstract text is available yet for this article.
December 1, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351383/muscular-performance-and-body-composition-changes-following-multi-versus-combined-multi-and-single-joint-exercises-in-aging-adults
#14
Ewertton de Souza Bezerra, Antônio Renato Pereira Moro, Lucas Bet da Rosa Orssatto, Mariane Eichendorf da Silva, Jeffrey Michael Willardson, Roberto Simão
The aim of the present study was to compare muscular performance and body composition changes following low volume resistance training programs consisting of multi-joint (MJ) exercises (cable chest press and seated row)versus a combination of multi- and single-joint (MJ+SJ) exercises (cable chest press, seated row, biceps curl, and triceps extension). Thirty untrained healthy aging adults were randomly assigned to three groups: MJ (n=11), MJ+SJ (n=11), and Control (n=8). Twelve-repetition maximums (12-RM) for the cable chest press and seated row; localized muscular endurance for the elbow flexors handgrip strength; and body composition were assessed before and after the 8-week training program...
January 19, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29351335/the-effects-of-an-acute-exercise-bout-on-gh-and-igf-1-in-prediabetic-and-healthy-african-americans-a-pilot-study-investigating-gene-expression
#15
Nathaniel T Berry, Monica Hubal, Laurie Wideman
The incidence of pre-diabetes (PD) and Type-2 Diabetes Mellitus (T2D) is a worldwide epidemic. African American (AA) individuals are disproportionately more likely to become diabetic than other ethnic groups. Over the long-term, metabolic complications related to diabetes result in significant alterations in growth hormone (GH) and insulin-like growth factor-1 (IGF-1). Considering the limited exercise-related studies in the area of gene expression changes with disease progression, the objective of this study was to examine differences in exercise-induced gene expression related to the GH and IGF-1 pathways in peripheral blood mononuclear cells (PBMCs) of healthy (CON) and PD AA individuals...
2018: PloS One
https://www.readbyqxmd.com/read/29351233/postpartum-women-s-perspectives-of-engaging-with-a-dietitian-and-exercise-physiologist-via-video-consultations-for-weight-management-a-qualitative-evaluation
#16
Lisa Vincze, Megan E Rollo, Melinda J Hutchesson, Robin Callister, Debbe I Thompson, Clare E Collins
Optimising weight status after childbirth is important. Video consultations are an unexplored opportunity to deliver real-time support to postpartum women to improve lifestyle behaviours. This study aims to provide insight into postpartum women's perspectives of engaging with a dietitian and exercise physiologist through video consultations for tailored nutrition and exercise care. A qualitative study using individual telephone interviews (13-36 min) was undertaken. 21 women (body mass index (BMI): 28.1 ± 3...
January 19, 2018: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/29351165/the-relationship-between-maximum-pull-up-repetitions-and-first-repetition-mean-concentric-velocity
#17
George K Beckham, Joshua J Olmeda, Alexandra J Flores, Julian A Echeverry, Alexus F Campos, Steven B Kim
Mean concentric velocity (MCV) of exercise execution has been used by strength and conditioning professionals to improve exercise technique, provide accurate feedback, and predict exercise one repetition maximum. There is still limited research on velocity based training and currently only one research study on the pull-up exercise. The primary purpose of this research was to determine if the maximum number of pull-ups an individual can perform can be predicted by the MCV of a single pull-up repetition. Forty-nine healthy men and women were recruited who reported they could do at least two pull-ups...
January 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29351163/comparison-of-the-force-velocity-and-power-time-curves-between-the-concentric-only-and-eccentric-concentric-bench-press-exercises
#18
Alejandro Pérez-Castilla, Paul Comfort, John J McMahon, Francisco Luis Pestaña-Melero, Amador García-Ramos
The aim of this study was to compare the temporal and mechanical variables between the concentric-only and eccentric-concentric bench press (BP) variants. Twenty-one men (age: 22.0±4.2 years, body mass: 73.4±7.7 kg, height: 177.2±8.0 cm; one-repetition maximum [1RM]: 1.12±0.12 kg⋅kg) were evaluated during the concentric-only and eccentric-concentric BP variants using 80% 1RM. Temporal (concentric phase duration, propulsive phase duration, and time to reach the maximum values of force, velocity, and power) and mechanical variables (force, velocity, and power), determined using a linear velocity transducer, were compared between both BP variants...
January 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29351160/acute-cardiorespiratory-and-metabolic-effects-of-a-sandbag-resistance-exercise-protocol
#19
Nicholas A Ratamess, Jie Kang, Jeremy D Kuper, Elizabeth A O'Grady, Nicole L Ellis, Ira T Vought, Emma Culleton, Jill A Bush, Avery D Faigenbaum
The purpose of the present study was to examine the acute cardiorespiratory and metabolic effects of a sandbag (SB) resistance exercise protocol and compare the responses to time-matched treadmill running protocols. Eight healthy, resistance-trained men (21.1 ± 1.0 years; 86.1 ± 7.8 kg) completed four protocols of equal duration in random sequence: 1) SB, 2) treadmill running at 60% of VO2 reserve (60VO2R), 3) treadmill running at 80% of VO2 reserve (80VO2R), and 4) a control protocol. The SB protocol was 16 min in duration and consisted of 3 circuits of 8 multiple-joint exercises (with 11-, 20-, or -48 kg sandbags) performed for as many repetitions as possible for 20 sec followed by a 10-sec rest interval prior to beginning the next exercise...
January 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29351130/comparative-effectiveness-of-low-volume-time-efficient-resistance-training-versus-endurance-training-in-patients-with-heart-failure
#20
Gregers Winding Munch, Jaya Birgitte Rosenmeier, Morten Petersen, Anders Rasmussen Rinnov, Ulrik Winning Iepsen, Bente Klarlund Pedersen, Stefan Peter Mortensen
PURPOSE: Cardiorespiratory fitness is positively related to heart failure (HF) prognosis, but lack of time and low energy are barriers for adherence to exercise. We, therefore, compared the effect of low-volume time-based resistance exercise training (TRE) with aerobic moderate-intensity cycling (AMC) on maximal and submaximal exercise capacity, health-related quality of life, and vascular function. METHODS: Twenty-eight HF patients (New York Heart Association class I-II) performed AMC (n = 14) or TRE (n = 14)...
January 18, 2018: Journal of Cardiopulmonary Rehabilitation and Prevention
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