journal
MENU ▼
Read by QxMD icon Read
search

Medicine and Science in Sports and Exercise

journal
https://www.readbyqxmd.com/read/29219943/replacement-of-sedentary-time-with-physical-activity-impact-on-lipoproteins
#1
Catherine M Phillips, Christina B Dillon, Ivan J Perry
PURPOSE: Limited data on the relationship between physical activity and lipoprotein particle profiles exist. Our objective was to investigate associations between objectively measured physical activity and lipoprotein particle size and number, and specifically whether substituting daily sedentary behaviour with light activity or moderate to vigorous physical activity (MVPA), is associated with beneficial alterations to the lipoprotein profile among adults and those at increased cardiometabolic risk (obese and insulin resistant subjects)...
December 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29206785/three-weeks-of-overload-training-increases-resting-muscle-sympathetic-activity
#2
Alexandra M Coates, Anthony V Incognito, Jeremy D Seed, Connor J Doherty, Philip J Millar, Jamie F Burr
PURPOSE: Overload training is hypothesized to alter autonomic regulation, though interpretations using indirect measures of heart rate variability are conflicting. The aim of the present study was to examine the effects of overload training on muscle sympathetic nerve activity (MSNA), a direct measure of central sympathetic outflow, in recreational endurance athletes. METHODS: Measurements of heart rate variability, cardiac baroreflex sensitivity (BRS), MSNA (microneurography), and sympathetic BRS were obtained in seventeen healthy triathletes and cyclists after 1-week of reduced training (baseline) and following 3-weeks of either regular (CON, n=7) or overload (OL, n=10) training...
December 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29206784/effect-of-beta-blocker-treatment-on-vo2peak-in-patients-with-heart-failure
#3
David Montero, Andreas J Flammer
PURPOSE: In addition to prolong life and reduce hospitalization rates, it is currently unclear whether beta-blocker (BB) treatment modulates peak oxygen consumption (VO2peak), a hallmark of exercise capacity, in patients with heart failure (HF). The main aim of this study is to determine the effect of BB treatment on VO2peak in HF patients. METHODS: We conducted a systematic search of MEDLINE, Scopus and Web of Science since their inceptions until March 2017 for randomized controlled trials (RCTs) assessing the effect of BB treatment on VO2peak in chronic HF patients...
December 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29206783/protocol-for-objective-measurement-of-infants-physical-activity-using-accelerometry
#4
Luiza Isnardi Cardoso Ricardo, Inácio Crochemore Mohnsam da Silva, Rafaela Costa Martins, Andrea Wendt, Helen Gonçalves, Pedro Rodrigues Curi Hallal, Fernando César Wehrmeister
PURPOSE: To evaluate methods for infants' physical activity measurement based on accelerometry, including the minimum number of measurement days and placement of a wrist or ankle device. We also evaluated the acceptability of the device among infants and mothers. METHODS: A cross-sectional mixed-methods study was conducted on a convenience sample of 90 infants. Physical activity was measured using the Actigraph GT3X+ accelerometer placed on the wrist and/or ankle for seven consecutive days (worn for 24 hours), and a qualitative interview was performed to verify acceptability...
December 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29206782/muscle-fiber-and-performance-changes-after-fast-eccentric-complex-training
#5
Gregory C Bogdanis, Athanasios Tsoukos, Lee E Brown, Elisavet Selima, Panagiotis Veligekas, Konstantinos Spengos, Gerasimos Terzis
INTRODUCTION: The purpose of this study was to examine the effects of a short-term fast eccentric and ballistic complex training program on muscle power, rate of force development (RFD), muscle fiber composition and cross-sectional area (CSA). METHODS: Sixteen male physical education students were randomly assigned to either a training group (TG, n=8) or a control group (C, n=8). The TG followed a 6-week low volume training program, including fast eccentric squat training with an individually optimized load of 74±7% of maximal half-squat strength (1RM) twice per week and a ballistic training session with loaded (30% 1RM) and unloaded jump squats, once per week, all combined with unloaded plyometric jumps...
December 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29206781/perceptual-responses-to-high-and-moderate-intensity-interval-exercise-in-adolescents
#6
Adam A Malik, Craig A Williams, Kathryn L Weston, Alan R Barker
PURPOSE: High-intensity continuous exercise is proposed to evoke unpleasant sensations as predicted by the dual mode theory (DMT), and may negatively impact on future exercise adherence. Previous studies support unpleasant sensations in affective responses during continuous high-intensity exercise, but the affect experience during high-intensity interval exercise (HIIE) involving brief bursts of high-intensity exercise separated by low-intensity activity is poorly understood in adolescents...
December 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29194096/the-interplay-between-genes-and-psychosocial-home-environment-on-physical-activity
#7
Sari Aaltonen, Jaakko Kaprio, Urho M Kujala, Lea Pulkkinen, Richard J Rose, Karri Silventoinen
INTRODUCTION: Genetic factors contribute to individual differences in physical activity, but it remains uncertain whether the magnitude of the genetic effects is modified by variations in home environments. We aimed to examine to what extent the psychosocial home environment in childhood and adolescence modifies the genetic influences on leisure-time physical activity in young adulthood. METHODS: Participants were Finnish twins (N=3,305) who reported their leisure-time physical activity at age 24...
November 29, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29210918/association-between-physical-activity-and-adiposity-in-adolescents-with-down-syndrome
#8
E Andrew Pitchford, Chelsea Adkins, Rebecca E Hasson, Joseph E Hornyak, Dale A Ulrich
PURPOSE: Obesity is highly prevalent among adolescents with Down syndrome (DS); however, reported associations between body composition and moderate-to-vigorous physical activity (MVPA) have been small and non-significant. The purpose of this study to compare group differences between adolescents with and without DS, including dual-energy x-ray absorptiometry (DXA) measured body composition and accelerometer-measured physical activity, and then examine associations within adolescents with DS...
November 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29210917/link-between-physical-activity-type-in-adolescence-and-body-composition-in-adulthood
#9
Mathieu Belanger, Tarun R Katapally, Tracie A Barnett, Erin OʼLoughlin, Catherine M Sabiston, Jennifer OʼLoughlin
PURPOSE: We investigated whether type of physical activity (PA) (sports, running, fitness/dance) engaged in during adolescence is associated with body composition in late adolescence or early adulthood. METHODS: Data were drawn from 631 participants in the Nicotine Dependence in Teens study, a prospective investigation of students ages 12-13 years at inception. Self-report PA data were collected at baseline, in Grade 7, and every 3-4 months thereafter during the 5 years of high school (1999-2005)...
November 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29210916/acute-inflammatory-responses-to-exercise-in-patients-with-abdominal-aortic-aneurysm
#10
Mark T Windsor, Tom G Bailey, Maria Perissiou, Kim Greaves, Pankaj Jha, Anthony S Leicht, Fraser D Russell, Jonathan Golledge, Christopher D Askew
PURPOSE: Inflammation and extracellular matrix degeneration contribute to abdominal aortic aneurysm (AAA) development. We aimed to assess the effect of exercise intensity on circulating biomarkers of inflammation and extracellular matrix degeneration in patients with AAA and healthy older adults. METHODS: Twenty patients with AAA (74±6y) and twenty healthy males (72±5y) completed moderate-intensity cycling at 40% peak power output (PPO), higher-intensity intervals at 70% PPO, and control (rest) on separate days...
November 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29166319/cardiometabolic-impact-of-changing-sitting-standing-and-stepping-in-the-workplace
#11
Elisabeth Ah Winkler, Sebastien Chastin, Elizabeth G Eakin, Neville Owen, Anthony D LaMontagne, Marj Moodie, Paddy C Dempsey, Bronwyn A Kingwell, David W Dunstan, Genevieve N Healy
BACKGROUND: According to cross-sectional and acute experimental evidence, reducing sitting time should improve cardio-metabolic health risk biomarkers. Furthermore, the improvements obtained may depend on whether sitting is replaced with standing or ambulatory activities. Based on data from the Stand Up Victoria multi-component workplace intervention, we examined this issue using compositional data analysis - a method that can examine and compare all activity changes simultaneously. METHODS: Participants receiving the intervention (n=136 ≥0...
November 21, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29166323/strength-affect-regulation-and-subcortical-morphology-in-military-pilots
#12
David Cárdenas, Iker Madinabeitia, Jesús Vera, José Cesar Perales, Amador García-Ramos, Enrique Ortega, Elvira Catena-Verdejo, Andrés Catena
INTRODUCTION: Previous studies have shown links of body composition and fitness measures with brain structure, as well as with different aspects of emotional adjustment and well-being. However, the possible role of trait emotion-regulation success in the relationship between fitness/body composition and emotion-related subcortical structures have never been directly addressed METHODS: 23 elite helicopter pilots were assessed in fat mass percentage, an endurance test to volitional exhaustion, bench-press power output, and negative urgency (trait affect regulation failure)...
November 20, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29166322/biological-genetic-regulation-of-physical-activity-level-consensus-from-genbiopac
#13
J Timothy Lightfoot, Eco J C De Geus, Frank W Booth, Molly S Bray, Marcel den Hoed, Jaakko Kaprio, Scott A Kelly, Daniel Pomp, Michael C Saul, Martine A Thomis, Theodore Garland, Claude Bouchard
PURPOSE: Physical activity unquestionably maintains and improves health; however, physical activity levels globally are low and not rising despite all the resources devoted to this goal. Attention in both the research literature and the public policy domain has focused on social-behavioral factors; however, a growing body of literature suggests that biological determinants play a significant role in regulating physical activity levels. For instance, physical activity level, measured in various manners, has a genetic component in both humans and non-human animal models...
November 20, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29166321/adipose-lipolysis-unchanged-by-preexercise-carbohydrate-regardless-of-glycemic-index
#14
Daniel A Baur, Brandon D Willingham, Kyle A Smith, Jacob N Kisiolek, Margaret C Morrissey, Patrick G Saracino, Tristan J Ragland, Michael J Ormsbee
PURPOSE: To determine the impact of pre-exercise carbohydrate of different glycemic indices on subcutaneous abdominal adipose tissue (SCAAT) metabolism and running performance. METHODS: Ten trained male runners completed three experimental trials consisting of 30 min at 60% VO2max, 30 min at 75% VO2max, and a 5-km time trial (TT). Thirty min prior to exercise, participants consumed one of three beverages: 1) 75 g low glycemic index modified starch supplement (UCAN), 2) 75 g high glycemic index glucose-based supplement (G), or 3) a flavor-matched non-caloric placebo (PL)...
November 20, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29166320/exercise-alters-gut-microbiota-composition-and-function-in-lean-and-obese-humans
#15
Jacob M Allen, Lucy J Mailing, Grace M Niemiro, Rachel Moore, Mark D Cook, Bryan A White, Hannah D Holscher, Jeffrey A Woods
PURPOSE: Exercise is associated with altered gut microbial composition, but studies have not investigated whether the gut microbiota and associated metabolites are modulated by exercise training in humans. We explored the impact of six weeks of endurance exercise on the composition, functional capacity, and metabolic output of the gut microbiota in lean and obese adults with multiple-day dietary controls prior to outcome variable collection. METHODS: Thirty-two lean (n=18 [9 female]) and obese (n=14 [11 female]), previously sedentary subjects participated in six weeks of supervised, endurance-based exercise training (3 days/wk) that progressed from 30 to 60 minutes/day and from moderate (60% of heart rate reserve [HRR]) to vigorous intensity (75% HRR)...
November 20, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29140898/a-construct-validation-study-of-playfun
#16
John Cairney, Scott Veldhuizen, Jeffrey D Graham, Christine Rodriguez, Chloe Bedard, Emily Bremer, Dean Kriellaars
INTRODUCTION: PLAYfun is a measure of motor competence, comprehension and confidence which is part of a suite of scales used to assess physical literacy in children and youth. However, its measurement properties have not been reported in the published literature. The purpose of this study is to examine the factor structure of PLAYfun, in addition to variations in PLAYfun subscale results by age and sex. METHOD: In this study, we use a sample of children and youth aged 7 to 14 years (n=215) to test a proposed factor structure for the motor competence component of PLAYfun and to examine age and sex differences in subscale and total scores...
November 15, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29140897/psychological-and-psychophysiological-effects-of-recuperative-music-postexercise
#17
Costas I Karageorghis, Andrew C Bruce, Suzanne T Pottratz, Rebecca C Stevens, Marcelo Bigliassi, Mark Hamer
PURPOSE: Few studies have examined the psychological and psychophysiological effects of recuperative music following exhaustive exercise. The main purpose of the present study was to examine the effects of two music conditions compared with a no-music control on psychological and psychophysiological recovery processes post-exercise. METHODS: A randomized, fully counterbalanced, crossover design was used. Core affect, salivary cortisol, heart rate, and blood pressure were measured before exhaustive exercise, immediately after, and in 10-, 20-, and 30-min intervals during passive recovery (21 women and 21 men; 20...
November 15, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29140896/cold-water-ingestion-improves-exercise-tolerance-of-heat-sensitive-people-with-ms
#18
Georgia K Chaseling, Davide Filingeri, Michael Barnett, Phu Hoang, Scott L Davis, Ollie Jay
PURPOSE: Heat intolerance commonly affects the exercise capacity of people with multiple sclerosis (MS) during bouts of hot weather. Cold-water ingestion is a simple cooling strategy but its efficacy for prolonging exercise capacity with MS remains undetermined. We sought to identify whether cold-water ingestion blunts exercise-induced rises in body temperature and improves exercise tolerance in heat-sensitive individuals with MS. METHODS: On two separate occasions, 20 participants (10 relapsing-remitting MS (EDSS: 1-5); 10 age-matched healthy controls (CON)) cycled at ~40% VO2max at 30°C, 30%RH until volitional exhaustion (or a maximum of 60 min)...
November 15, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29140900/associations-between-bmi-change-and-cardiometabolic-risk-in-retired-football-players
#19
Eric T Trexler, Abbie E Smith-Ryan, J D DeFreese, Stephen W Marshall, Kevin M Guskiewicz, Zachary Y Kerr
PURPOSE: Elevated rates of cardiometabolic diseases have been observed in former American football players. The current study sought to determine if change in body mass index (ΔBMI) following retirement influences the prevalence of coronary heart disease (CHD), diabetes, or high blood pressure (HBP) in former professional football players. METHODS: Retired professional football players (n=3,729) were sent a survey with questions regarding health status, playing history, and demographic information...
November 14, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29140899/isotemporal-substitution-of-sedentary-behavior-and-physical-activity-on-function
#20
Nicholas L Lerma, Chi C Cho, Ann M Swartz, Nora E Miller, Kevin G Keenan, Scott J Strath
The amount of time spent in sedentary behaviors (SB) progressively increases with age, while reducing time spent in light (LPA) and moderate-to-vigorous physical activity (MVPA). These trajectories in PA and SB are linked to accelerated reductions in physical functioning. PURPOSE: To examine the association of substituting SB time with LPA and MVPA on physical function in older adults. METHODS: Ninety-one older adults (mean age: 70.7 ± 10.2 yr) wore a hip-mounted accelerometer to measure SB, LPA, and MVPA time...
November 14, 2017: Medicine and Science in Sports and Exercise
journal
journal
20196
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"