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aerobic fitness

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https://www.readbyqxmd.com/read/28350537/comparison-of-structured-and-unstructured-physical-activity-training-on-predicted-vo2max-and-heart-rate-variability-in-adolescents-a-randomized-control-trial
#1
Vivek Kumar Sharma, Senthil Kumar Subramanian, Krishnakumar Radhakrishnan, Rajathi Rajendran, Balasubramanian Sulur Ravindran, Vinayathan Arunachalam
BACKGROUND: Physical inactivity contributes to many health issues. The WHO-recommended physical activity for adolescents encompasses aerobic, resistance, and bone strengthening exercises aimed at achieving health-related physical fitness. Heart rate variability (HRV) and maximal aerobic capacity (VO2max) are considered as noninvasive measures of cardiovascular health. The objective of this study is to compare the effect of structured and unstructured physical training on maximal aerobic capacity and HRV among adolescents...
March 28, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28345359/a-new-equation-based-on-the-6-min-walking-test-to-predict-vo2peak-in-women-with-obesity
#2
Lore Metz, David Thivel, Bruno Peirrera, Ruddy Richard, Valérie Julian, Martine Duclos
OBJECTIVE: The 6-min walking test (6 MWT) is commonly used to assess obese patients' aerobic fitness, but it has rarely been compared with a direct measurement of maximal aerobic capacities (VO2max or VO2peak) in obese adults. The aim of this study was to investigate the relationship between the distance covered during a 6 MWT with objectively measured VO2peak and to propose a new equation to predict VO2peak from this walking test in obese patients. METHODS: One hundred and thirty-seven obese patients (45...
March 27, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28345260/resistance-and-aerobic-training-improve-muscle-strength-and-aerobic-capacity-in-cidp
#3
Lars H Markvardsen, Kristian Overgaard, Karen Heje, Søren H Sindrup, Ingelise Christiansen, John Vissing, Henning Andersen
INTRODUCTION: We investigated the effect of aerobic and resistance exercise in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). METHODS: Eighteen CIDP patients treated with subcutaneous immunoglobulin did 12 weeks of aerobic exercise and 12 weeks of resistance exercise after a run-in period of 12 weeks without exercise. Three times weekly the participants performed aerobic exercise on an ergometer bike or resistance exercise with unilateral training of knee and elbow flexion/extension...
March 27, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28344734/aerobic-capacity-is-related-to-repeated-sprint-ability-with-sprint-distances-less-than-40-meters
#4
Gabriel J Sanders, Zachary Turner, Brian Boos, Corey A Peacock, Willard Peveler, Alar Lipping
Research is inconclusive regarding the association between aerobic fitness (objectively measured VO2max) and repeated sprint performance when the sprints are less than 40 meters. Soccer athletes must be able to repeat sprints without significant decreases in speed and strength and conditioning coaches need to better understand if aerobic fitness is related to repeated sprint ability (RSA). Twenty (10 male, 10 female) Division I soccer athletes first completed a graded maximal treadmill test to measure VO2max...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28338837/associations-of-leukocyte-telomere-length-with-aerobic-and-muscular-fitness-in-young-adults
#5
Dylan M Williams, Jessica L Buxton, Marko T Kantomaa, Tuija H Tammelin, Alexandra I F Blakemore, Marjo-Riitta Järvelin
Decline in both telomere length and physical fitness over the life course may contribute to increased risk of several chronic diseases. The relationship between telomere length and aerobic and muscular fitness is not well characterized. We examined whether there are cross-sectional associations of mean relative leukocyte telomere length (LTL) with objective measures of aerobic fitness, muscle strength, and muscle endurance, using data on 31-year-old participants of the Northern Finland Birth Cohort 1966 (n = 4,952-5,205, varying by exposure-outcome analysis)...
March 1, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28338412/adolescent-changes-in-aerobic-fitness-are-related-to-changes-in-academic-achievement
#6
Lauren B Raine, John R Biggan, Carol L Baym, Brian J Saliba, Neal J Cohen, Charles H Hillman
There is a growing trend of decreasing physical fitness among adolescents, which may not only result in poorer physical health, but also poorer academic achievement. PURPOSE: The purpose of this study was to investigate the changes in aerobic fitness and academic achievement in reading and mathematics during middle school. METHOD: This study employed a prospective, longitudinal cross-sectional design. Fifty-two adolescents were followed from sixth grade through eighth grade...
March 24, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28330458/the-effects-of-an-extensive-exercise-programme-on-the-progression-of-mild-cognitive-impairment-mci-study-protocol-for-a-randomised-controlled-trial
#7
Kate E Devenney, Brian Lawlor, Marcel G M Olde Rikkert, Stefan Schneider
BACKGROUND: Exercise interventions to prevent dementia and delay cognitive decline have gained considerable attention in recent years. Human and animal studies have demonstrated that regular physical activity targets brain function by increasing cognitive reserve. There is also evidence of structural changes caused by exercise in preventing or delaying the genesis of neurodegeneration. Although initial studies indicate enhanced cognitive performance in patients with mild cognitive impairment (MCI) following an exercise intervention, little is known about the effect of an extensive, controlled and regular exercise regimen on the neuropathology of patients with MCI...
March 22, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28324835/flexible-biological-arsenite-oxidation-utilizing-nox-and-o2-as-alternative-electron-acceptors
#8
Jie Wang, Junfeng Wan, Zihao Wu, Hongli Li, Haisong Li, Christophe Dagot, Yan Wang
The feasibility of flexible microbial arsenite (As(III)) oxidation coupled with the reduction of different electron acceptors was investigated. The results indicated the acclimated microorganisms could oxidize As(III) with oxygen, nitrate and nitrite as the alternative electron acceptors. A series of batch tests were conducted to measure the kinetic parameters of As(III) oxidation and to evaluate the effects of environmental conditions including pH and temperature on the activity of biological As(III) oxidation dependent on different electron acceptors...
March 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28323305/exercise-to-reduce-work-related-fatigue-among-employees-a-randomized-controlled-trial
#9
Juriena D de Vries, Madelon Lm van Hooff, Sabine Ae Guerts, Michiel Aj Kompier
Objectives The present study evaluated the efficacy of an exercise intervention to reduce work-related fatigue (emotional exhaustion, overall fatigue, and need for recovery). The effects of exercise on self-efficacy, sleep, work ability, cognitive functioning and aerobic fitness (secondary outcomes) were also investigated. Methods Employees with high levels of work-related fatigue were randomly assigned to either a 6-week exercise intervention (EI; N=49) or a wait-list control group (WLC; N=47). All participants were measured pre- (T0) and post-intervention (T1)...
March 21, 2017: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/28323203/the-association-between-cardiorespiratory-fitness-and-pulmonary-diffusing-capacity
#10
Gerald S Zavorsky, James M Smoliga
Pulmonary diffusing capacity for nitric oxide (DL,NO) and carbon monoxide (DL,CO) measured at rest (mL/min/mmHg) is strongly associated with aerobic capacity (cardiorespiratory fitness or peak oxygen uptake, VO2peak) measured in L/min. Data from healthy, non-obese individuals from various studies (n=121 males and 81 females) were combined to examine this association. Subjects that were above the upper limit of normal (ULN, 97.5th percentile for age and sex and height) for DL,NO and DLCO had a higher median VO2peak compared to subjects below the ULN (Above the ULN=4...
March 16, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28320057/psychiatric-diagnoses-and-medication-treatment-among-patients-presenting-for-paediatric-weight-management-associations-with-adiposity-aerobic-fitness-and-cardiometabolic-health
#11
J M Tucker, A Cadieux, K Culver, L Smith, W Stratbucker
We compared anthropometry, cardiometabolic risk and aerobic fitness among obese youth in weight management who were diagnosed with one or more psychiatric disorders (PD), with (PD+M) or without (PD-M) a prescribed psychotropic medication with those with no PD (NPD). Physical measures were evaluated at baseline, and psychiatric diagnoses and related medications were identified from medical records. Of 99 patients 64 (65%) had a diagnosed PD, and of those, 23 (36%) had a related medication (PD+M). Compared to NPD, PD-M had a higher body mass index (BMI) (P = 0...
March 20, 2017: Clinical Obesity
https://www.readbyqxmd.com/read/28319588/physical-activity-and-global-self-worth-in-a-longitudinal-study-of-children
#12
Hudson Reddon, David Meyre, John Cairney
PURPOSE: Physical activity is associated with an array of physical and mental health benefits among children and adolescents. The development of self-worth/self-esteem has been proposed as a mechanism to explain the mental health benefits derived from physical activity. Despite several studies that have analyzed the association between physical activity and self-worth, the results have been inconsistent. It is also uncertain how related physical health measures, such as sedentary behaviour, body composition and fitness influence the relationship between physical activity and self-worth over time...
March 18, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28306685/effects-of-a-6-week-aquatic-treadmill-exercise-program-on-cardiorespiratory-fitness-and-walking-endurance-in-subacute-stroke-patients-a-pilot-trial
#13
Eun Young Han, Sang Hee Im
OBJECTIVE: To assess the feasibility and safety of a 6-week course of water walking performed using a motorized aquatic treadmill in individuals with subacute stroke for cardiorespiratory fitness, walking endurance, and activities of daily living. METHODS: Twenty subacute stroke patents were randomly assigned to aquatic treadmill exercise (ATE) or land-based exercise (LBE). The ATE group (n = 10) performed water-based aerobic exercise on a motorized aquatic treadmill, and the LBE group (n = 10) performed land-based aerobic exercise on a cycle ergometer...
March 15, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28303248/fitness-effects-of-10-month-frequent-low-volume-ball-game-training-or-interval-running-for-8-10-year-old-school-children
#14
Malte Nejst Larsen, Claus Malta Nielsen, Christina Ørntoft, Morten Bredsgaard Randers, Eva Wulff Helge, Mads Madsen, Vibeke Manniche, Lone Hansen, Peter Riis Hansen, Jens Bangsbo, Peter Krustrup
We investigated the exercise intensity and fitness effects of frequent school-based low-volume high-intensity training for 10 months in 8-10-year-old children. 239 Danish 3rd-grade school children from four schools were cluster-randomised into a control group (CON, n = 116) or two training groups performing either 5 × 12 min/wk small-sided football plus other ball games (SSG, n = 62) or interval running (IR, n = 61). Whole-body DXA scans, flamingo balance, standing long-jump, 20 m sprint, and Yo-Yo IR1 children's tests (YYIR1C) were performed before and after the intervention...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28301444/hemodynamic-and-cardiorespiratory-predictors-of-sport-rock-climbing-performance
#15
Simon Fryer, David Giles, Inmaculada Garrido Palomino, Alejandro de la O Puerta, Vanesa España Romero
Rock climbing performance has been suggested to involve a notable contribution from the aerobic metabolism. Previously it has been shown that forearm oxygenation kinetics can be used to distinguish ability groups and predict red-point sport climbing performance. Currently it is not known if forearm oxygenation kinetics, or a sport specific assessment of cardiorespiratory fitness best predicts sport rock climbing performance. The aim of the study was to determine whether forearm oxidative capacity index, maximal de-oxygenation (Δ score) during a treadwall V[Combining Dot Above]O[SUBSCRIPT TWO]peak test, treadwall V[Combining Dot Above]O[SUBSCRIPT TWO]peak, or running V[Combining Dot Above]O[SUBSCRIPT TWO]max best predicts self-reported sport climbing performance...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28301436/the-effects-of-recovery-duration-during-high-intensity-interval-exercise-on-time-spent-at-high-rates-of-oxygen-consumption-oxygen-kinetics-and-blood-lactate
#16
Ilias Smilios, Aristides Myrkos, Andreas Zafeiridis, Argyris Toubekis, Apostolos Spassis, Savas P Tokmakidis
The recovery duration and the work to recovery ratio are important aspects to consider when designing a high-intensity aerobic interval exercise (HIIE). This study examined the effects of recovery duration on total exercise time performed above 80, 90 and 95% of maximum oxygen consumption (VO2max) and heart rate (HRmax) during a single-bout HIIE. We also evaluated the effects on VO2 and HR kinetics, blood lactate concentration and rating of perceived exertion (RPE). Eleven moderately trained males (22.1±1 yrs...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28296754/effects-of-aquatic-exercise-on-physical-function-and-fitness-among-people-with-spinal-cord-injury-a-systematic-review
#17
REVIEW
Chunxiao Li, Selina Khoo, Athirah Adnan
OBJECTIVE: The aim of this review is to synthesize the evidence on the effects of aquatic exercise interventions on physical function and fitness among people with spinal cord injury. DATA SOURCE: Six major databases were searched from inception till June 2015: MEDLINE, CINAHL, EMBASE, PsychInfo, SPORTDiscus, and Cochrane Center Register of Controlled Trials. STUDY APPRAISAL AND SYNTHESIS METHODS: Two reviewers independently rated methodological quality using the modified Downs and Black Scale and extracted and synthesized key findings (i...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28295379/a-phenomenological-biological-dose-model-for-proton-therapy-based-on-linear-energy-transfer-spectra
#18
Eivind Rørvik, Sara Thörnqvist, Camilla H Stokkevåg, Tordis J Dahle, Lars Fredrik Fjaera, Kristian S Ytre-Hauge
PURPOSE: The relative biological effectiveness (RBE) of protons varies with the radiation quality, quantified by the linear energy transfer (LET). Most phenomenological models employ a linear dependency of the dose-averaged LET (LETd ) to calculate the biological dose. However, several experiments have indicated a possible non-linear trend. Our aim was to investigate if biological dose models including non-linear LET dependencies should be considered, by introducing a LET spectrum based dose model...
March 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28292300/clinical-outcomes-and-glycaemic-responses-to-different-aerobic-exercise-training-intensities-in-type-ii-diabetes-a-systematic-review-and-meta-analysis
#19
Aimee Grace, Erick Chan, Francesco Giallauria, Petra L Graham, Neil A Smart
AIMS: To establish if aerobic exercise training is associated with beneficial effects on clinical outcomes and glycaemic profile in people with type II diabetes. METHODS: A systematic search was conducted to identify studies through a search of MEDLINE (1985 to Sept 1, 2016, Cochrane Controlled Trials Registry (1966 to Sept 1, 2016), CINAHL, SPORTDiscus and Science Citation Index. The search strategy included a mix of MeSH and free text terms for related key concepts...
March 14, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28292282/metabolic-risk-management-physical-exercise-and-lifestyle-counselling-in-low-active-adults-controlled-randomized-trial-bellugat
#20
Assumpta Ensenyat, Gemma Espigares-Tribo, Leonardo Machado, Francisco José Verdejo, Rosa Rodriguez-Arregui, José Serrano, Marta Miret, Gisela Galindo, Alfonso Blanco, Josep-Ramon Marsal, Susana Sarriegui, Xenia Sinfreu-Bergues, Noemi Serra-Paya
BACKGROUND: The primary aim of this study is to evaluate the effectiveness of different doses (intensity) of supervised exercise training - concomitant with lifestyle counselling - as a primary care intervention tool for the management of metabolic syndrome risk factors in low-active adults with one or more such factors (programme name in Catalan: Bellugat de CAP a peus). METHODS/DESIGN: Three-arm, randomized controlled clinical trial implemented in the primary care setting, with a duration of 40 weeks (16 weeks intervention and 24-week follow-up)...
March 14, 2017: BMC Public Health
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