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https://www.readbyqxmd.com/read/28096758/effects-of-acute-ingestion-of-a-pre-workout-dietary-supplement-with-and-without-p-synephrine-on-resting-energy-expenditure-cognitive-function-and-exercise-performance
#1
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Elfego Galvan, Ryan Dalton, Dillon Walker, Christopher Rasmussen, Peter S Murano, Mike Greenwood, Richard B Kreider
BACKGROUND: The purpose of this study was to examine the effects of acute ingestion of a pre-workout dietary supplement (PWS) with and without p-synephrine (S) on perceptions of readiness to perform, cognitive function, exercise performance, and markers of safety. METHODS: In a randomized, double-blind, and counterbalanced manner; 25 healthy and recreationally active male and female participants ingested a flavored maltodextrin placebo (PLA), a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg) with 2 g of maltodextrin and flavoring; or, the PWS with Citrus aurantium (PWS + S) extract standardized for 30% p-synephrine (20 mg)...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28096757/effects-of-ingesting-a-pre-workout-dietary-supplement-with-and-without-synephrine-for-8%C3%A2-weeks-on-training-adaptations-in-resistance-trained-males
#2
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Minye Cho, Nick Barringer, Dillon Walker, Christopher Rasmussen, Mike Greenwood, Peter S Murano, Richard B Kreider
BACKGROUND: The purpose of this study was to examine whether ingesting a pre-workout dietary supplement (PWS) with and without synephrine (S) during training affects training responses in resistance-trained males. METHODS: Resistance-trained males (N = 80) were randomly assigned to supplement their diet in a double-blind manner with either a flavored placebo (PLA); a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg); or, the PWS supplement with Citrus aurantium extract containing 20 mg of synephrine (PWS + S) once per day for 8-weeks during training...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28090762/use-of-ace-inhibition-and-blood-pressure-management-in-deferring-dialysis-initiation
#3
Lucia Del Vecchio, Ugo Teatini, Francesco Locatelli
Elevated blood pressure is one of the most significant risk factor for the development of chronic kidney disease (CKD); its treatment is a milestone in CKD management. While it is accepted that a stricter blood pressure control is indicated in patients with proteinuria or microalbuminuria, the exact degree of blood pressure reduction to be obtained in CKD patients is still under debate. Following more recent interpretation of old trials, a BP target for < 140/90 mmHg is suggested for non-proteinuric CKD patients...
January 13, 2017: Panminerva Medica
https://www.readbyqxmd.com/read/28079707/effect-of-number-of-sprints-in-a-sit-session-on-change-in-vo2max-a-meta-analysis
#4
Niels Bj Vollaard, Richard S Metcalfe, Sean Williams
PURPOSE: Recent meta-analyses indicate that sprint interval training (SIT) improves cardiorespiratory fitness (V[Combining Dot Above]O2max), but the effects of various training parameters on the magnitude of the improvement remain unknown. The present meta-analysis examined the modifying effect of the number of sprint repetitions in a SIT session on improvements in V[Combining Dot Above]O2max. METHODS: The databases PubMed and Web of Science were searched for original studies that have examined pre- and post-training V[Combining Dot Above]O2max in adults following ≥2 weeks of training consisting of repeated (≥2) Wingate-type cycle sprints, published up to 1 May 2016...
January 10, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28079300/assessing-the-accuracy-of-the-omron-hem-907xl-oscillometric-blood-pressure-measurement-device-in-patients-with-nondialytic-chronic-kidney-disease
#5
Jordana B Cohen, Tiffany C Wong, Bruce S Alpert, Raymond R Townsend
The OMRON HEM-907XL is a commercial oscillometric blood pressure (BP) monitor that was used in the Systolic Blood Pressure Intervention Trial (SPRINT), in which 28% of participants had chronic kidney disease (CKD). This study examined the accuracy of the monitor in nondialytic patients with CKD. Eighty-seven patients met inclusion criteria. The authors used a modified Association for the Advancement of Medical Instrumentation (AAMI) protocol, with one observer recording measurements from the monitor and two blinded physicians obtaining simultaneous aneroid values by auscultation...
January 12, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/28075147/evaluating-the-efficacy-of-the-feeding-exercise-randomized-trial-in-overweight-and-obese-adolescents
#6
Anna Patsopoulou, Zoi Tsimtsiou, Antonios Katsioulis, Eleni Malissiova, George Rachiotis, Christos Hadjichristodoulou
BACKGROUND: The Feeding Exercise Trial in Adolescents (FETA) aimed to evaluate whether a community-based, parents-involving, combined physical activity and nutritional education program was effective in improving adiposity profiles in overweight and obese adolescents. METHODS: A total of 181 overweight and obese adolescents aged 13-15 years old were randomized in the three study groups ("Diet & Activity," "Activity," and Control). The Activity intervention included a 45-minute, 3-day per week supervised training program, while the Diet & Activity intervention included a supplementary 15 minutes of group-based sessions attended by the parents...
January 11, 2017: Childhood Obesity
https://www.readbyqxmd.com/read/28067762/ecologically-valid-carbohydrate-intake-during-soccer-specific-exercise-does-not-affect-running-performance-in-a-fed-state
#7
Mark P Funnell, Nick R Dykes, Elliot J Owen, Stephen A Mears, Ian Rollo, Lewis J James
This study assessed the effect of carbohydrate intake on self-selected soccer-specific running performance. Sixteen male soccer players (age 23 ± 4 years; body mass 76.9 ± 7.2 kg; predicted VO2max = 54.2 ± 2.9 mL∙kg(-1)∙min(-1); soccer experience 13 ± 4 years) completed a progressive multistage fitness test, familiarisation trial and two experimental trials, involving a modified version of the Loughborough Intermittent Shuttle Test (LIST) to simulate a soccer match in a fed state. Subjects completed six 15 min blocks (two halves of 45 min) of intermittent shuttle running, with a 15-min half-time...
January 5, 2017: Nutrients
https://www.readbyqxmd.com/read/28051333/optimal-loading-for-maximising-power-during-sled-resisted-sprinting
#8
Matt R Cross, Matt Brughelli, Pierre Samozino, Scott R Brown, Jean-Benoit Morin
Purpose We sought to ascertain whether force-velocity-power relationships could be compiled from a battery of sled-resisted over-ground sprints, and to clarify and compare the optimal loading conditions for maximising power production for different athlete cohorts. Methods Recreational mixed-sport athletes (n=12) and sprinters (n=15) performed multiple trials of maximal sprints unloaded and towing a selection of sled masses (20-120% body-mass). Velocity data were collected by sports radar, and kinetics at peak velocity were quantified using friction coefficients and aerodynamic drag...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28050914/physiological-perceptual-and-performance-responses-associated-with-self-selected-versus-standardized-recovery-periods-during-a-repeated-sprint-protocol-in-elite-youth-football-players-a-preliminary-study
#9
Neil Gibson, Callum Brownstein, Derek Ball, Craig Twist
PURPOSE: To examine the physiological and perceptual responses of youth footballers to a repeated sprint protocol employing standardized and self-selected recovery. METHODS: Eleven male participants (13.7 ± 1.1 years) performed a repeated sprint assessment comprising 10 x 30 m efforts. Employing a randomized crossover design, repeated sprints were performed using 30 s and self-selected recovery periods. Heart rate was monitored continuously with ratings of perceived exertion (RPE) and lower body muscle power measured 2 min after the final sprint...
January 4, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28045554/an-aerobic-exercise-program-for-young-people-with-cerebral-palsy-in-specialist-schools-a-phase-i-randomized-controlled-trial
#10
Stacey L Cleary, Nicholas F Taylor, Karen J Dodd, Nora Shields
PURPOSE: To evaluate the safety, adherence, and estimates of effect of an aerobic exercise program in specialist schools for young people with cerebral palsy. METHODS: Nineteen students with cerebral palsy were randomly allocated to an intervention group who completed an aerobic exercise program (27 sessions over nine weeks) or a control group who completed social/art activities over the same time. RESULTS: There were no serious adverse events and the exercise program was completed with high rates of attendance (77%) and adherence to target heart rate zones (79%)...
January 3, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28002177/selected-physiological-perceptual-and-physical-performance-changes-during-two-bouts-of-prolonged-high-intensity-intermittent-running-separated-by-72-hours
#11
Nicholas Dobbin, Kevin Lamb, Craig Twist
This study investigated the effects of performing a second 90-minute intermittent running protocol 72 hours after an initial trial on selected physiological, perceptual and sprint running measures. Eight sub-elite soccer players provided measures of isokinetic muscle function, counter-movement jump (CMJ), 10 m sprinting, and muscle soreness before, and at 0, 24, 48 and 72 h after a 90-minute intermittent high intensity running bout (IHIR 1). A second 90-minute intermittent high intensity running bout (IHIR 2) was performed 72 h after the first...
December 8, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27991483/differing-six-minute-pacing-strategies-effect-anaerobic-contribution-oxygen-uptake-muscle-deoxygenation-and-cycle-performance
#12
John Murray, Michael McCrudden, Juan M Murias, Volker Nolte, Glen R Belfry
BACKGROUND: This study compared an all-out start (AO) to a constant power start strategy (CON) during a 6 min cycle performance on utilization of W ́ (energy above critical power (CP)), muscle deoxygenation (HHb), oxygen uptake (VO2) and performance in recreationally active individuals. The AO strategy was similar to that employed by rowers. METHODS: Eight healthy males (age = 24 ± 3 y) completed a ramp test to fatigue (VO2peak = 4.42 ± 0.54 L∙min-1; peak power = 385 ± 35 W) and a 3-min all-out test to determine CP and the CON work rate...
December 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27981434/novel-pathophysiological-mechanisms-in-hypertension
#13
Rohan Samson, Andrew Lee, Sean Lawless, Robert Hsu, Gary Sander
Hypertension is the most common disease affecting humans and imparts a significant cardiovascular and renal risk to patients. Extensive research over the past few decades has enhanced our understanding of the underlying mechanisms in hypertension. However, in most instances, the cause of hypertension in a given patient continues to remain elusive. Nevertheless, achieving aggressive blood pressure goals significantly reduces cardiovascular morbidity and mortality, as demonstrated in the recently concluded SPRINT trial...
December 16, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27967284/sled-towing-the-optimal-overload-for-peak-power-production
#14
Andrea Monte, Francesca Nardello, Paola Zamparo
PURPOSE: The effects of different loads on kinematic and kinetic variables during sled towing were investigated with the aim to identify the optimal overload for this specific sprint training. METHODS: Thirteen male sprinters (100m PB: 10.91±0.14 s) performed 5 maximal trials over a 20m distance in the following conditions: unloaded (UL) and with loads from +15% to +40% of the athlete's body mass (BM). In these calculations the sled mass and friction were taken into account...
December 14, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27930447/carbohydrate-and-caffeine-improves-high-intensity-running-of-elite-rugby-league-interchange-players-during-simulated-match-play
#15
Jon S Clarke, Jamie Highton, Graeme L Close, Craig Twist
The study examined the effects of carbohydrate and caffeine ingestion on simulated rugby league interchange performance. Eight male elite rugby league forwards completed two trials of a rugby league simulation protocol for interchange players seven days apart in a randomized crossover design, ingesting either carbohydrate (CHO; 40 g·h-1) or carbohydrate and caffeine (CHO-C) (40 g·h-1 + 3 mg·kg-1) drink. Movement characteristics, heart rate, ratings of perceived exertion (RPE), and countermovement jump height (CMJ) were measured during the protocol...
November 19, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27926691/on-treatment-blood-pressures-of-older-hypertensive-patients-in-canada-implications-for-systolic-blood-pressure-intervention-trial
#16
Jiri George Fodor, Penelope Baker, Li Chen, Frans H H Leenen
OBJECTIVE: The therapeutic target level for the blood pressure (BP) on antihypertensive drug treatment in older hypertensive patients is still extensively debated. We assessed the achieved BP levels in older treated hypertensive patients in a representative sample of the population. DESIGN: During the 2006 Ontario Survey on the Prevalence and Control of Hypertension, BP (using the SPRINT protocol) and treatment data were collected in 2551 respondents from a random and representative sample of the adult (20-79 years) population...
December 6, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27919826/should-blood-pressure-goal-be-individualized-in-hypertensive-patients
#17
REVIEW
Alexandra Yannoutsos, Rania Kheder-Elfekih, Jean-Michel Halimi, Michel E Safar, Jacques Blacher
The aim of the present review is to consider the clinical relevance of individualized blood pressure (BP) goal under treatment in hypertensive patients according to their age, comorbidities or established cardiovascular (CV) disease. Evidence from large-scale randomized trials to support a lower BP goal, as initially recommended by guidelines in high-risk hypertensive patients, were lacking. Recently, the randomized intervention SPRINT trial studied two treatment targets for systolic BP (120mm Hg versus 140mm Hg in the intensive and standard treatment group, respectively) among high-risk hypertensive patients, without diabetes and without a history of prior stroke...
December 2, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27905864/determining-friction-and-effective-loading-for-sled-sprinting
#18
Matt R Cross, Farhan Tinwala, Seth Lenetsky, Pierre Samozino, Matt Brughelli, Jean-Benoit Morin
Understanding the impact of friction in sled sprinting allows the quantification of kinetic outputs and the effective loading experienced by the athlete. This study assessed changes in the coefficient of friction (µk) of a sled sprint-training device with changing mass and speed to provide a means of quantifying effective loading for athletes. A common sled equipped with a load cell was towed across an athletics track using a motorised winch under variable sled mass (33.1-99.6 kg) with constant speeds (0...
December 1, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27884231/guidelines-for-the-management-of-hypertension
#19
REVIEW
Aram V Chobanian
This article summarizes pertinent data from clinical trials on the effects of antihypertensive therapy on cardiovascular complications. Prior definitions of hypertension and blood pressure goals of therapy are discussed, and differences between national and international guidelines on such goals are summarized. The results of the SPRINT study are summarized, and the impact of this study on future goals of treatment is discussed. New recommendations are provided on blood pressure goals, and the effects such goals might have on clinical practice are discussed...
January 2017: Medical Clinics of North America
https://www.readbyqxmd.com/read/27872460/sprint-trial-and-blood-pressure-treatment-dr-gordon-guyatt-in-an-interview-with-dr-roman-jaeschke
#20
Gordon Guyatt, Roman Jaeschke
No abstract text is available yet for this article.
October 28, 2016: Polskie Archiwum Medycyny Wewnętrznej
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