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https://www.readbyqxmd.com/read/28440716/exercise-reduced-pentraxin-3-levels-produced-by-endotoxin-stimulated-human-peripheral-blood-mononuclear-cells-in-obese-individuals
#1
Aaron L Slusher, Yoshimi Shibata, Michael Whitehurst, Arun Maharaj, Justin M Quiles, Chun-Jung Huang
The purpose of this study was to determine whether obesity would reduce the capacity of peripheral blood mononuclear cells (PBMCs) to produce the anti-inflammatory protein pentraxin 3 (PTX3) in response to ex vivo stimulation with lipopolysaccharide (LPS), and if acute aerobic exercise would enhance this PTX3 production capacity. In addition, the inter-relationships of LPS-induced PTX3 with the inflammatory cytokines (interleukin 6 [IL-6], IL-10, and tumor necrosis factor alpha) were examined. Twenty-one healthy subjects (10 obese and 11 normal-weight) performed an acute bout of aerobic exercise at 75% VO2max...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28432611/comparison-of-human-erythrocyte-purine-nucleotide-metabolism-and-blood-purine-and-pyrimidine-degradation-product-concentrations-before-and-after-acute-exercise-in-trained-and-sedentary-subjects
#2
Wioleta Dudzinska, M Suska, A Lubkowska, K Jakubowska, M Olszewska, K Safranow, D Chlubek
This study aimed at evaluating the concentration of erythrocyte purine nucleotides (ATP, ADP, AMP, IMP) in trained and sedentary subjects before and after maximal physical exercise together with measuring the activity of purine metabolism enzymes as well as the concentration of purine (hypoxanthine, xanthine, uric acid) and pyrimidine (uridine) degradation products in blood. The study included 15 male elite rowers [mean age 24.3 ± 2.56 years; maximal oxygen uptake (VO2max) 52.8 ± 4.54 mL/kg/min; endurance and strength training 8...
April 21, 2017: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/28423014/initial-systemic-inflammatory-state-perturbs-exercise-training-adaptations-in-elite-taekwondo-athletes
#3
Chung-Yu Chen, Yi-Hung Liao, Chun-Chung Chou, Yu-Chi Sung, Shiow-Chwen Tsai
PURPOSE: This study examined ten-week TKD-specific training effects on aerobic capacity, body composition, hormone responses and hematological parameters in elite TKD athletes with varied initial inflammatory states. METHODS: Twenty-two elite college TKD athletes were divided into two groups according to their initial neutrophils-to-lymphocytes ratio (NLR) values: Low NLR (N = 11, 9M/2F, age: 21.6 ± 1.0 yrs; NLR: 1.3 ± 0.2) and High NLR (N = 11, 8M/3F, age: 22...
2017: PloS One
https://www.readbyqxmd.com/read/28422560/effect-of-physical-activity-intervention-in-prediabetes-a-systematic-review-with-meta-analysis
#4
Radhika Aditya Jadhav, Animesh Hazari, Ashma Monterio, Sampath Kuman, Arun G Maiya
BACKGROUND: Prediabetes is a strong risk factor for the development of Type2 Diabetes Mellitus (T2DM). Modification in lifestyle plays an important role to avoid the prognosis of T2DM and its complications in future. The aim of our study was to focus on the effectiveness of physical activity (PA) intervention program on different outcome measures in individuals with prediabetes. The effort of the present review was to contribute to the existing literature by strengthening the evidence pointing towards the positive impact of physical activity in individuals with prediabetes...
April 19, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28419026/the-gas-sampling-interval-effect-on-vo2peak-is-independent-of-exercise-protocol
#5
Cory M Scheadler, Matthew J Garver, Nicholas J Hanson
INTRODUCTION: There is a plethora of gas sampling intervals available during cardiopulmonary exercise (CPX) testing to measure peak oxygen consumption (VO2peak). Different intervals can lead to altered VO2peaks. Whether differences are affected by the exercise protocol or subject sample is not clear. The purpose of this investigation was to determine whether VO2peak differed due to manipulation of sampling intervals and whether differences were independent of the protocol and subject sample...
April 18, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28410999/impact-of-time-and-work-rest-ratio-matched-sprint-interval-training-programmes-on-performance-a-randomised-controlled-trial
#6
Molly C Lloyd Jones, Martyn G Morris, John R Jakeman
OBJECTIVES: The aim of this study was to examine the effects of a short training intervention using two repeated sprint protocols matched for total sprint duration and work:rest ratio. DESIGN: Randomised-controlled trial. METHODS: Thirty physically active males were randomly allocated to one of two sprint training groups: a 6s group, a 30s group or a non-exercising control. The training groups were matched for work:rest ratio and total sprint time per session, and completed 6 training sessions over a 2-week period...
March 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28409516/relationships-between-fitness-test-and-kicking-velocity-in-young-soccer-players
#7
Víctor Torreblanca-Martínez, José A González-Jurado, Fernando M Otero-Saborido
BACKGROUND: To study the relation between fitness test and kicking velocity in young soccer players, which has not been previously studied in this group of age. METHODS: Ninety eight Under-11 soccer players who belonged to two professional Spanish clubs and two amateur clubs were subjected to sprint test (15 and 30 meters), CMJ (Countermovement Jump), estimation of maximal oxygen intake (VO2max), kicking velocity test, fatigue index of jump height and anthropometrical measures...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28403029/secular-trends-in-the-physical-fitness-of-united-states-army-recruits-on-entry-to-service-1975-2013
#8
Joseph Knapik, Marilyn Sharp, Ryan A Steelman
A systematic literature search was conducted to identify and analyze articles that reported on physical fitness of new United States (US) Army recruits. The National Library of Medicine's PubMed and the Defense Technical Information Center, were searched using the keywords {military personnel OR trainee OR recruit OR soldier} AND {physical fitness OR strength OR endurance OR flexibility OR balance OR coordination OR muscle contraction OR running OR exercise OR physical conditioning}. Reference lists of obtained articles and contact with authors enhanced the search...
April 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28401139/family-physician-led-team-based-lifestyle-intervention-in-patients-with-metabolic-syndrome-results-of-a-multicentre-feasibility-project
#9
Khursheed Jeejeebhoy, Rupinder Dhaliwal, Daren K Heyland, Roger Leung, Andrew G Day, Paula Brauer, Dawna Royall, Angelo Tremblay, David M Mutch, Lew Pliamm, Caroline Rhéaume, Doug Klein
BACKGROUND: Metabolic syndrome (MetS) is a medical condition with major complications and health care costs. Previous research has shown that diet and exercise can improve and reverse this condition. The goal of this study was to test the feasibility and effectiveness of implementing the Canadian Health Advanced by Nutrition and Graded Exercise (CHANGE) program into diverse family medicine practices to improve MetS. METHODS: In this longitudinal before-after study, 305 adult patients with MetS were recruited from 3 diverse family medicine team-based organizations to the CHANGE personalized diet and exercise program...
January 2017: CMAJ Open
https://www.readbyqxmd.com/read/28398944/alpine-skiing-as-winter-time-high-intensity-training
#10
Thomas Stöggl, Christoph Schwarzl, Edith E Müller, Masaru Nagasaki, Julia Stöggl, Martin Schönfelder, Josef Niebauer
INTRODUCTION: To counteract the winter activity deficit, we set out to analyze cardiorespiratory and metabolic responses of two high intensity training (HIT) protocols during alpine skiing (AS), cross-country skiing (XCS) and indoor cycling (IC) and the effects of sex, age and fitness level in this comparison. METHODS: Nineteen healthy subjects (two age and fitness groups, both sexes) performed AS, XCS, and IC with measurements of oxygen uptake (VO2), energy expenditure (EE), heart rate (HR), lactate, blood glucose and rate of perceived exertion, determined during 4-min of continuous high intensity (HITc: 90% HRmax for XCS and IC or short turn skiing during AS) or 10-min intermittent HIT [HITint: 5x1' high intensity (>90% HRmax or short turn skiing), 1' active recovery]...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28394978/-salivary-immunoglobulin-a-siga-kinetics-in-young-adults-with-an-average-or-excellent-aerobic-capacity-before-and-after-a-cardiopulmonary-graded-exercise-test
#11
Paulina Yesica Ochoa-Martínez, Javier Arturo Hall-López, Marco Antonio Martínez-García, Raúl Díaz-Molina, Ana María Miranda Botelho Teixeira, José Antonio Moncada-Jiménez
BACKGROUND: Aim: To compare the concentration of secretory immunoglobulin-A (sIgA) in young adults with average or excellent aerobic capacity before and after a cardiopulmonary graded exercise test. METHODS: Participants were nine apparently healthy physically active males (Mean age = 21.3 ± 2.1 yr.), randomly allocated in two groups based on their VO2max: a) average aerobic capacity (AEC, n = 5) or b) excellent aerobic capacity (EAC, n = 4). Participants performed the Bruce protocol to determine their aerobic capacity...
February 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28387566/energy-expenditure-in-playground-games-in-primary-school-children-measured-by-accelerometer-and-heart-rate-monitors
#12
Jorge Cañete García-Prieto, Vicente Martinez-Vizcaino, Antonio García-Hermoso, Mairena Sánchez-López, Natalia Arias-Palencia, Juan Fernando Ortega Fonseca, Ricardo Mora-Rodriguez
The aim of this study was to examine the energy expenditure (EE) measured using indirect calorimetry (IC) during playground games and to assess the validity of heart rate (HR) and accelerometry counts as indirect indicators of EE in children´s physical activity games. 32 primary school children (9.9 ± 0.6 years old, 19.8 ± 4.9 kg · m(-2) BMI and 37.6 ± 7.2 mL · kg(-1) · min(-1) VO2max). Indirect calorimetry (IC), accelerometry and HR data were simultaneously collected for each child during a 90 min session of 30 playground games...
April 7, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28381445/high-intensity-interval-training-improves-performance-in-young-and-older-individuals-by-increasing-mechanical-efficiency
#13
Georges Jabbour, Horia-Daniel Iancu, Pascale Mauriège, Denis R Joanisse, Luc J Martin
This study evaluated the effects of 6 weeks of high-intensity interval training (HIIT) on mechanical efficiency (ME) in young and older groups. Seventeen healthy young adults [26.2(2.4) year], and thirteen healthy older adults [54.5(2.3) year] completed a 6-week HIIT intervention (three sessions per week) on an electromagnetically braked cycle ergometer. Each HIIT session contained six repetitions of supramaximal exercise intervals (6 seconds each) with 2 min of passive recovery between each repetition...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28381219/cardiorespiratory-fitness-levels-and-associations-with-physical-activity-and-body-composition-in-young-south-african-adults-from-soweto
#14
A Prioreschi, S Brage, K Westgate, S A Norris, L K Micklesfield
BACKGROUND: This observational study aims to describe fitness, and objectively measured physical activity levels and patterns in 409 young black South African adults (aged 19-20 years) from Soweto, as well as to examine associations between physical activity, fitness and BMI. METHODS: A sub-maximal ramped step test was used to obtain an estimate of maximal oxygen uptake (VO2max). Physical activity was measured using ActiGraph (GT1M) for 7 days in 256 participants...
April 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28378985/aerobic-capacity-of-adults-with-intellectual-disabilities
#15
Krystyna Gawlik, Anna Zwierzchowska, Beata Manowska, Diana Celebańska
INTRODUCTION: Physical fitness is a resultant of the efficiency of adaptive mechanisms for physical effort. People with intellectual disabilities may exhibit limited adaptive capacities, not only regarding their mental development, but also physiological, social and emotional development. Dysfunctions of the central nervous system observed in individuals with intellectual disabilities cause difficulties in gaining movement experience as well as problems with coordination and kinesthetic sense...
December 31, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28377168/a-reference-equation-for-normal-standards-for-vo2-max-analysis-from-the-fitness-registry-and-the-importance-of-exercise-national-database-friend-registry
#16
REVIEW
Jonathan Myers, Leonard A Kaminsky, Ricardo Lima, Jeffrey Chistle, Euan Ashley, Ross Arena
Existing normal standards for maximal oxygen uptake (VO2 max) are problematic because they tend to be population specific, lack normal distribution and portability, and are poorly represented by women. The objective of the current study was to apply the Fitness Registry and the Importance of Exercise: A National Data Base (FRIEND) Registry to improve upon previous regression formulas for normal standards for VO2 max using treadmill testing. Maximal treadmill tests were performed in 7783 healthy men and women (20-79years; maximal RER >1...
April 1, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28368958/a-field-based-cycling-test-to-assess-predictors-of-endurance-performance-and-establishing-training-zones
#17
Dajo Sanders, Richard J Taylor, Tony Myers, Ibrahim Akubat
This study evaluates the relationship between a field-based 8-min time trial (8MTT) and physiological endurance variables assessed with an incremental laboratory test. Secondly, lactate thresholds assessed in the laboratory were compared to estimated functional threshold power (FTP) from the 8MTT. Nineteen well-trained road cyclists (aged 22 ± 2 yr, height 185.9 ± 4.5 cm, weight 72.8 ± 4.6 kg, VO2max 64 ± 4 ml·min·kg) participated. Linear regression revealed that mean 8MTT power output (PO) was strongly to very strongly related to PO at 4 mmol[BULLET OPERATOR]L, PO at initial rise of 1...
March 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28368957/impact-of-endurance-exercise-in-hypoxia-on-muscle-damage-inflammatory-and-performance-responses
#18
Daichi Sumi, Chihiro Kojima, Kazushige Goto
This study evaluated muscle damage and inflammatory and performance responses following high-intensity endurance exercise in moderate hypoxia among endurance athletes. Nine trained endurance athletes completed two different trials on different days: exercise under moderate hypoxia (H trial, FiO2 = 14.5%) and normoxia (N trial, FiO2 = 20.9%). They performed interval exercises (10 × 3-min running at 95% of VO2max with 60-s of active rest at 60% of VO2max) followed by 30-min of continuous running at 85% of VO2max under either hypoxic or normoxic conditions...
March 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28367334/changes-in-cortical-activation-patterns-in-language-areas-following-an-aerobic-exercise-intervention-in-older-adults
#19
Joe Nocera, Bruce Crosson, Kevin Mammino, Keith M McGregor
Previous work has shown that older adults who evidence increased right inferior frontal gyrus (IFG) activity during language tasks show decreased sematic verbal fluency performance. The current study sought to evaluate if an aerobic exercise intervention can alter patterns of brain activity during a semantic verbal fluency task assessed by functional magnetic resonance imaging (fMRI). Thirty-two community-dwelling, sedentary older adults were enrolled to a 12-week aerobic "Spin" exercise group or a 12-week nonaerobic exercise control condition (Balance)...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28366763/aerobic-fitness-hippocampal-viscoelasticity-and-relational-memory-performance
#20
Hillary Schwarb, Curtis L Johnson, Ana M Daugherty, Charles H Hillman, Arthur F Kramer, Neal J Cohen, Aron K Barbey
The positive relationship between hippocampal structure, aerobic fitness, and memory performance is often observed among children and older adults; but evidence of this relationship among young adults, for whom the hippocampus is neither developing nor atrophying, is less consistent. Studies have typically relied on hippocampal volumetry (a gross proxy of tissue composition) to assess individual differences in hippocampal structure. While volume is not specific to microstructural tissue characteristics, microstructural differences in hippocampal integrity may exist even among healthy young adults when volumetric differences are not diagnostic of tissue health or cognitive function...
March 30, 2017: NeuroImage
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