journal
MENU ▼
Read by QxMD icon Read
search

Medicine and Science in Sports and Exercise

journal
https://www.readbyqxmd.com/read/27926615/coronary-artery-evaluation-by-screening-echocardiogram-in-intercollegiate-athletes
#1
Walter J Hoyt, Peter N Dean, Daniel S Schneider, Mark R Conaway, Christopher M Kramer, Robert W Battle
INTRODUCTION: Coronary artery anomalies are the second most common congenital cause of sudden cardiac death (SCD) in young athletes. Some centers have advocated for limited transthoracic echocardiogram (TTE) protocols in the screening of college athletes, which may miss important causes of SCD. PURPOSE: The purpose of this study is to evaluate the ability of screening TTE to determine origin and proximal course of the coronary arteries in intercollegiate athletes...
December 6, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27922463/the-dangers-of-estimating-v%C3%AB-o2max-using-linear-nonexercise-prediction-models
#2
Alan M Nevill, Carlton B Cooke
PURPOSE: To compare the accuracy and goodness-of-fit of two competing models (linear versus allometric) when estimating V˙O2max (ml.kg.min) using non-exercise prediction models. METHODS: The two competing models were fitted to the V˙O2max (ml.kg.min) data taken from two previously published studies. Study 1 (the Allied Dunbar National Fitness Survey, ADNFS), recruited 1732 randomly selected healthy participants, aged 16 years and over, from thirty English parliamentary constituencies...
December 1, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27902529/perceived-exertion-during-exercise-is-associated-with-children-s-energy-intake
#3
S Nicole Fearnbach, Travis D Masterson, Haley A Schlechter, Eric Loken, Danielle S Downs, David Thivel, Kathleen L Keller
PURPOSE: To examine the individual-level factors that predict energy intake (EI) following imposed exercise (EX) and sedentary time (SED) in children. METHODS: Healthy-weight children ages 9-12 years (n = 20) reported to the laboratory for 1 baseline and 2 experimental visits (EX and SED) each separated by 1 week in a randomized crossover design. Percent body fat, weight (kg), and height (m) were used to calculate fat-mass index (FM index) and fat-free mass index (FFM index; kg/m)...
November 29, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27898643/effect-of-different-osmolalities-cho-types-and-cho-on-gastric-emptying-in-humans
#4
Xiaocai Shi, Kristin L Osterberg, Heather Petrie, John R Stofan, Robert Murray
PURPOSE: This study investigated the effect of beverage osmolalities, carbohydrate (CHO) type and CHO concentration on gastric emptying in euhydrated subjects at rest. METHODS: The gastric emptying of water (W), four glucose beverages (2, 4, 6, and 8% glucose: 2G, 4G, 6G, and 8G) and four sucrose beverages (2, 4, 6, and 8% sucrose: 2S, 4S, 6S, and 8S) were determined in eight healthy subjects using the modified George double-sampling technique. Subjects ingested a beverage (7 ml/kg body weight) containing 25-ppm phenol red as quickly as possible (≤1...
November 28, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27898642/manipulation-of-muscle-creatine-and-glycogen-changes-dxa-estimates-of-body-composition
#5
Julia L Bone, Megan L Ross, Kristyen A Tomcik, Nikki A Jeacocke, Will G Hopkins, Louise M Burke
: Standardising a dual x-ray absorptiometry (DXA) protocol is thought to provide a reliable measurement of body composition. PURPOSE: We investigated the effects of manipulating muscle glycogen and creatine content independently and additively on DXA estimates of lean mass. METHOD: Eighteen well-trained male cyclists undertook a parallel group application of creatine loading (n=9) (20 g/d for 5 d loading; 3 g/d maintenance) or placebo (n=9) with crossover application of glycogen loading (12 v 6 g/kg BM/d for 48 h) as part of a larger study involving a glycogen-depleting exercise protocol...
November 28, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27898641/oral-contraceptive-use-dampens-physiological-adaptations-to-sprint-interval-training
#6
Mia A Schaumberg, David G Jenkins, Xanne A K Janse de Jonge, Lynne M Emmerton, Tina L Skinner
PURPOSE: Oral contraceptive (OC) use reduces peak aerobic capacity (V˙O2peak), however, whether it also influences adaptations to training has yet to be determined. This study aimed to examine the influence of OC use on peak performance [peak power output (PPO)] and physiological adaptations [V˙O2peak and peak cardiac output (Q˙peak)] following sprint interval training (SIT) in recreationally-active women. METHODS: Women taking an OC (n=25) or experiencing natural regular menstrual cycles (MC; n=16) completed an incremental exercise test to assess V˙O2peak, PPO, and Q˙peak before, immediately after, and four weeks following 12 sessions of SIT...
November 28, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875501/effects-of-ibuprofen-and-resistance-training-on-bone-and-muscle-an-rct-in-older-women
#7
Whitney R D Duff, Philip D Chilibeck, Darren G Candow, Julianne J Gordon, Riley S Mason, Regina Taylor-Gjevre, Bindu Nair, Michael Szafron, Adam Baxter-Jones, Gordon A Zello, Saija A Kontulainen
INTRODUCTION/PURPOSE: Resistance training with ibuprofen supplementation may improve musculoskeletal health in postmenopausal women. The study purpose was to determine the efficacy of resistance training and ibuprofen supplementation on bone and muscle properties in postmenopausal women. METHODS: Participants (n = 90, 65.3 ± 4.9 y) were randomly assigned to: supervised resistance training or stretching (placebo-exercise) with post-exercise ibuprofen (400 mg) or placebo supplementation for 3 days/week (9 months)...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875500/activity-levels-over-four-years-in-a-cohort-of-urban-dwelling-adolescent-females
#8
Bonny Rockette-Wagner, Alison E Hipwell, Andrea M Kriska, Kristi L Storti, Kathleen M McTigue
PURPOSE: Evidence suggests that female adolescents and those living in urban environments may have lower physical activity (PA) levels compared to their peers. Yet, few studies report PA for urban adolescent females and there is no consensus regarding potential causes for low PA in this subgroup. We examined PA levels, in a large, diverse cohort of 14-17 year old urban-dwelling females and assessed the impact of socio-economic, personal, and neighborhood/environmental factors on PA. METHODS: One week of time-stamped step count data was collected on 926 girls from the Pittsburgh Girls Study (PGS) at four annual visits...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875499/impact-of-acute-dietary-manipulations-on-dxa-and-bia-body-composition-estimates
#9
Grant M Tinsley, Flor E Morales, Jeffrey S Forsse, Peter W Grandjean
PURPOSE: To examine the effects of acute pre-assessment diets on body composition estimates obtained by dual-energy x-ray absorptiometry (DXA) and bioelectrical impedance analysis (BIA). METHODS: In a counterbalanced design, 48 males and females were provided with two one-day diets: high-carbohydrate diet (9 g CHO/kg) and very low-carbohydrate diet (1 to 1.5 g CHO/kg). For each condition, body composition was assessed in the morning after an overnight fast, in the afternoon after feeding, and the following morning after a second overnight fast...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875498/a-murine-model-of-robotic-training-to-evaluate-skeletal-muscle-recovery-after-injury
#10
Stefano Lai, Alessandro Panarese, Ross Lawrence, Michael L Boninger, Silvestro Micera, Fabrisia Ambrosio
PURPOSE: In vivo studies have suggested that motor exercise can improve muscle regeneration after injury. Nevertheless, pre-clinical investigations still lack reliable tools to monitor motor performance over time and to deliver optimal training protocols to maximize force recovery. Here, we evaluated the utility of a murine robotic platform to (i) detect early impairment and longitudinal recovery after acute skeletal muscle injury and (ii) administer varying intensity training protocols to enhance forelimb motor performance...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875497/physical-activity-absolute-intensity-vs-relative-to-fitness-level-volumes
#11
Urho M Kujala, Julia Pietilä, Tero Myllymäki, Sara Mutikainen, Tiina Föhr, Ilkka Korhonen, Elina Helander
PURPOSE: To investigate in a real-life setting how moderate and vigorous intensity physical activity (PA) volumes differ according to absolute intensity recommendation and relative to individual fitness level by sex, age, and body mass index (BMI). METHODS: 23 224 Finnish employees (10 201 men, 13 023 women; ages 18-65 years; BMI 18.5-40.0 kg/m) participated in heart rate recording for 2+ days. We used heart rate and its variability, respiration rate, and on/off response information from R-R interval data calibrated by participant characteristics to objectively determine daily PA volume, as follows: daily minutes of absolute moderate (3-<6 multiples of resting metabolic rate; METs) and vigorous (≥6 METs) PA; and minutes relative to individual aerobic fitness for moderate (40-<60% of oxygen uptake reserve) and vigorous (≥60%) PA...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875496/exercise-attenuates-high-fat-diet-induced-disease-progression-in-3xtg-ad-mice
#12
Donghyun Kim, Jinkyung Cho, Inhwan Lee, Youngyun Jin, Li Li Ji, Hyunsik Kang
PURPOSE: Little is known regarding the therapeutic role of exercise against the risk of a high-fat diet (HFD) for Alzheimer's disease (AD) and AD-like cognitive deficits. This study aimed to investigate the therapeutic effect of treadmill running against HFD-induced progression in AD neuropathology and cognitive impairments in the triple transgenic-AD (3xTg-AD) mice. METHODS: The 3xTg-AD mice were assigned to a chow diet (control, n=10), a high-fat diet (HFD, n=10), or a high-fat diet combined with exercise (HFD+EX, n=10) group...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875495/accuracy-and-reliability-of-assessing-lateral-compartmental-leg-composition-using-dxa
#13
Christiana J Raymond, Tyler A Bosch, Foster K Bush, Lisa S Chow, Donald R Dengel
PURPOSE: Investigate the accuracy and reliability of a novel dual X-ray absorptiometry (DXA) scanning method in the frontal plane for total, fat, and lean mass quantification of the anterior and posterior upper leg compartments. METHODS: Twenty-one (11 female; X[Combining Overline]age=20.3±1.3 yrs) college athletes were assessed for total and regional body composition using DXA. Segmentation of anterior/posterior thigh compartments was measured with participants lying on their right and left sides and the scanned leg elevated with two foam pads...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875494/verification-of-maximal-oxygen-uptake-in-obese-and-nonobese-children
#14
Dharini M Bhammar, Jonathon L Stickford, Vipa Bernhardt, Tony G Babb
PURPOSE: The purpose of this study was to examine whether a supramaximal constant load verification test at 105% of the highest work rate would yield a higher V[Combining Dot Above]O2max when compared with an incremental test in 10 - 12 year old nonobese and obese children. METHODS: Nine non-obese (BMI percentile: 57.5 ± 23.2) and nine obese (BMI percentile: 97.9 ± 1.4) children completed a two-test protocol that included an incremental test followed 15 minutes later by a supramaximal constant-load verification test...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27875493/acute-lumbar-paraspinal-myonecrosis-in-football-players-with-sickle-cell-trait-a-case-series
#15
E Randy Eichner, Brock Schnebel, Scott Anderson, James R Clugston, Heath Hale, Charlie Michaudet, John M Small
We report 6 cases of a novel syndrome of acute, exertional low back pain (LBP) in football players, 5 in college and one in the National Football League (NFL). All 6 are African-Americans with sickle cell trait (SCT). The acute LBP is severe and can be disabling, and the condition can be confused with muscle strain, discogenic pain, stress fracture, or other problems in athletes. Our evidence shows that this syndrome is caused by lumbar paraspinal myonecrosis (LPSMN), which likely often contributes to the lumbar paraspinal compartment syndrome...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27870795/achieving-equity-in-physical-activity-participation-acsm-experience-and-next-steps
#16
Rebecca E Hasson, David R Brown, Joan Dorn, Lisa Barkley, Carol Torgan, Melicia Whitt-Glover, Barbara Ainsworth, NiCole Keith
There is clear and consistent evidence that regular physical activity is an important component of healthy lifestyles, and fundamental to promoting health and preventing disease. Despite the known benefits of physical activity participation, many people in the United States (US) remain inactive. More specifically, physical activity behavior is socially patterned with lower participation rates among women, racial/ethnic minorities, sexual minority youth, individuals with less education, persons with physical, mental and cognitive disabilities, individuals > 65 years of age, and those living in the southeast region of the US...
November 19, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27870794/comparison-of-measures-of-maximal-and-submaximal-fitness-in-response-to-exercise
#17
John Clarke, Louise de Lannoy, Robert Ross
INTRODUCTION: Adoption of physical activity (PA) consistent with current guidelines does not improve cardiorespiratory fitness (VO2peak, (mCRF)) beyond the error of measurement for approximately 30% of adults. Whether PA improves measures of exercise tolerance at submaximal levels (submaximal cardiorespiratory fitness (sCRF)) independent of change in mCRF is unknown. Here we assessed the relationship between exercise-induced changes in mCRF and sCRF. METHODS: Twenty-five physically inactive men aged 30-60 years ([mean (SD)], 44...
November 19, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27861273/thermodilution-determined-internal-jugular-venous-flow
#18
Peter Rasmussen, Mario Widmer, Matthias P Hilty, Mike Hug, Henrik Sørensen, Shigehiko Ogoh, Kohei Sato, Niels H Secher, Marco Maggiorini, Carsten Lundby
PURPOSE: Cerebral blood flow (CBF) increases ~20% during whole body exercise although a Kety-Schmidt-determined CBF is reported to remain stable; a discrepancy that could reflect evaluation of arterial vs. internal jugular venous (IJV) flow and/or that CBF is influenced by posture. Here we test the hypothesis that IJV flow, as determined by retrograde thermodilution increases during exercise when body position is maintained. METHODS: Introducing retrograde thermodilution, IJV flow was measured in 8 healthy humans at supine and upright rest and during exercise in normoxia and hypoxia with results compared to changes in ultrasound-derived IJV flow and middle cerebral artery mean velocity (MCA Vmean)...
November 17, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27851669/wrist-accelerometer-cut-points-for-classifying-sedentary-behavior-in-children
#19
Christiana M T van Loo, Anthony D Okely, Marijka J Batterham, Trina Hinkley, Ulf Ekelund, Søren Brage, John J Reilly, Stewart G Trost, Rachel A Jones, Xanne Janssen, Dylan P Cliff
INTRODUCTION: To examine the validity and accuracy of wrist accelerometers for classifying sedentary behavior (SB) in children. METHODS: Fifty-seven children (5-8y and 9-12y) completed a ~170min protocol including 15 semi-structured activities and transitions. Nine ActiGraph (GT3X+) and two GENEActiv wrist cut-points were evaluated. Direct observation was the criterion measure. The accuracy of wrist cut-points was compared to that achieved by the ActiGraph hip cut-point (≤25 counts/15s) and the thigh-mounted activPAL3...
November 16, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27851668/instability-resistance-training-improves-neuromuscular-outcome-in-parkinson-s-disease
#20
Carla Silva-Batista, Daniel Montie Corcos, Renato Barroso, Fabian J David, Hélcio Kanegusuku, Cláudia Forjaz, Marco Túlio de Mello, Hamilton Roschel, Valmor Tricoli, Carlos Ugrinowitsch
PURPOSE: This study compared the effects of resistance training (RT) and resistance training with instability (RTI) on neuromuscular and total training volume (TTV) outcomes obtained as part of the Instability Resistance Training Trial in Parkinson's disease (IRRT-PD). It also used a linear multiple regression (forward stepwise method) to identify the contribution of neuromuscular outcomes to previously published improvements in the timed-up-and-go-test and the Unified Parkinson's Disease Rating Scale, motor subscale score (UPDRS-III)...
November 16, 2016: 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"