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https://www.readbyqxmd.com/read/28070459/pre-versus-post-exercise-protein-intake-has-similar-effects-on-muscular-adaptations
#1
Brad Jon Schoenfeld, Alan Aragon, Colin Wilborn, Stacie L Urbina, Sara E Hayward, James Krieger
The purpose of this study was to test the anabolic window theory by investigating muscle strength, hypertrophy, and body composition changes in response to an equal dose of protein consumed either immediately pre- versus post-resistance training (RT) in trained men. Subjects were 21 resistance-trained men (>1 year RT experience) recruited from a university population. After baseline testing, participants were randomly assigned to 1 of 2 experimental groups: a group that consumed a supplement containing 25 g protein and 1 g carbohydrate immediately prior to exercise (PRE-SUPP) (n = 9) or a group that consumed the same supplement immediately post-exercise (POST-SUPP) (n = 12)...
2017: PeerJ
https://www.readbyqxmd.com/read/28028619/effects-of-protein-carbohydrate-supplementation-on-immunity-and-resistance-training-outcomes-a-double-blind-randomized-controlled-clinical-trial
#2
Fernando Naclerio, Eneko Larumbe-Zabala, Nadia Ashrafi, Marco Seijo, Birthe Nielsen, Judith Allgrove, Conrad P Earnest
PURPOSE: To examine the impact of ingesting hydrolyzed beef protein, whey protein, and carbohydrate on resistance training outcomes, body composition, muscle thickness, blood indices of health and salivary human neutrophil peptides (HNP1-3), as reference of humoral immunity followed an 8-week resistance training program in college athletes. METHODS: Twenty-seven recreationally physically active males and females (n = 9 per treatment) were randomly assigned to one of the three groups: hydrolyzed beef protein, whey protein, or non-protein isoenergetic carbohydrate...
December 27, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27990227/effects-of-a-pre-workout-energy-drink-supplement-on-upper-body-muscular-endurance-performance
#3
Mitchel A Magrini, Ryan J Colquhoun, J Jay Dawes, Doug B Smith
The use of pre-workout beverages is becoming an increasingly common method of improving performance during exercise in athletic and recreationally active populations. Therefore, the purpose of this study was to investigate the effects of a commercially available energy drink on exercise performance. Thirty-one healthy males (n=23) and females (n=8) participated in this study and were separated into two groups: supplement (SU; n=16) or placebo (PL; n=15). Subjects visited the laboratory on 2 occasions separated by no more than 7 days...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27939120/aerobic-exercise-as-a-warm-up-for-singing-acoustic-impacts
#4
Monica A McHenry, Joseph Evans
OBJECTIVES: In a previous work, it was found that a 30-minute aerobic workout significantly increased singers' sound pressure level and airflow during voicing, suggesting a shift to flow phonation. This companion study was designed to assess the impact of the same workout on pitch accuracy, vibrato rate, extent and regularity, and the singing power ratio. STUDY DESIGN: This study is a cohort experimental study. METHODS: Twenty-two students in an academic vocal performance program participated...
December 6, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27857520/secondary-elements-of-blood-ph-variation-can-influence-the-effort-effectiveness-based-on-adaptive-changes-within-a-group-of-elite-athletes
#5
Ştefan Adrian Martin, Valeriu Tomescu, Septimiu Voidăzan
AIM: pH is the direct indicator of the body reaction following the activities performed. Establishing precise correlations between pH and blood biochemical parameters might support the balancing of values during periods of marked physical activity. METHOD: We conducted a case study in a group of elite rowers. Twelve athletes were included in the study. Monitoring was carried out by collecting biological samples several times a day: in the morning, 80 minutes pre-workout, 12 hours after the last physical effort performed, at two different times, 10 days apart...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27780887/evaluation-of-a-motivational-pre-exercise-music-intervention
#6
Rachel Hallett, Alexandra Lamont
While music has been found to motivate exercisers during workouts, its potential as a pre-exercise motivator has rarely been investigated. This study evaluated a self-selected, pre-exercise music intervention against implementation intentions (writing down 'if … then …' sentences relating to overcoming barriers) and a control condition. A total of 50 participants (Mage = 43) took part in a longitudinal, randomised, between-participants study, from 99 recruited. For both interventions, participants had significantly more success meeting self-set exercise goals than the control group, and the music group exercised significantly more frequently than the control group...
October 25, 2016: Journal of Health Psychology
https://www.readbyqxmd.com/read/27777542/gender-differences-and-access-to-a-sports-dietitian-influence-dietary-habits-of-collegiate-athletes
#7
Michael V Hull, Andrew R Jagim, Jonathan M Oliver, Mike Greenwood, Deanna R Busteed, Margaret T Jones
BACKGROUND: Limited research exists on the effect of a sports dietitian (SD) on athletes' dietary habits and nutrient periodization, which is the deliberate manipulation of macronutrient intake to match training goals. Further, the difference in dietary habits between men and women collegiate athletes has been understudied. A survey questionnaire examining dietary habits and practices was administered to athletes at two universities that employed a full time SD. Not all athletes used the SD as their primary source for nutritional guidance...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27777314/integrating-lean-exploration-loops-into-healthcare-facility-design-schematic-phase
#8
Kendra Johnson, Lukasz Mazur, Janet Chadwick, Pegah Pooya, Alison Amos, John McCreery
PURPOSE: To explore how Lean can add value during the schematic phase of design through providing additional resources and support to project leadership and the architectural design team. BACKGROUND: This case study-based research took place at one large academic hospital during design efforts of surgical tower to house 19 operating rooms (ORs) and support spaces including pre- and post-op, central processing and distribution, and materials management. Surgical services project leadership asked for Lean practitioners' support during the design process...
October 24, 2016: HERD
https://www.readbyqxmd.com/read/27747793/a-preliminary-study-of-the-effectiveness-of-an-allostatic-closed-loop-acoustic-stimulation-neurotechnology-in-the-treatment-of-athletes-with-persisting-post-concussion-symptoms
#9
Charles H Tegeler, Catherine L Tegeler, Jared F Cook, Sung W Lee, Lee Gerdes, Hossam A Shaltout, Christopher M Miles, Sean L Simpson
BACKGROUND: Effective interventions are needed for individuals with persisting post-concussion symptoms. High-resolution, relational, resonance-based, electroencephalic mirroring (HIRREM®) is an allostatic, closed-loop, acoustic stimulation neurotechnology, designed to facilitate relaxation and self-optimization of neural oscillations. METHODS: Fifteen athletes (seven females, mean age 18.1 years, SD 2.6) with persisting post-concussion symptoms received 18.7 (SD 6...
December 2016: Sports Medicine—Open
https://www.readbyqxmd.com/read/27682004/nonconsecutive-versus-consecutive-day-resistance-training-in-recreationally-trained-subjects
#10
Alcino D Carvalho, José A Rodrigues Santos
BACKGROUND: Previous studies have shown that total-body resistance training (RT) performed two to three alternating days per week has positive effects on muscle strength and body composition. However, no evidence exists to determine if total-body RT workouts done on consecutive days (CD) are beneficial. Therefore, the purpose of this study was to compare the effects of a total-body RT program performed on three con- secutive or nonconsecutive days (NCD) per week for 7 weeks on maximum strength and body composition in recreationally trained subjects...
September 29, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27601779/hang-cleans-and-hang-snatches-produce-similar-improvements-in-female-collegiate-athletes
#11
J L Ayers, M DeBeliso, T G Sevene, K J Adams
Olympic weightlifting movements and their variations are believed to be among the most effective ways to improve power, strength, and speed in athletes. This study investigated the effects of two Olympic weightlifting variations (hang cleans and hang snatches), on power (vertical jump height), strength (1RM back squat), and speed (40-yard sprint) in female collegiate athletes. 23 NCAA Division I female athletes were randomly assigned to either a hang clean group or hang snatch group. Athletes participated in two workout sessions a week for six weeks, performing either hang cleans or hang snatches for five sets of three repetitions with a load of 80-85% 1RM, concurrent with their existing, season-specific, resistance training program...
September 2016: Biology of Sport
https://www.readbyqxmd.com/read/27601775/temporal-associations-between-individual-changes-in-hormones-training-motivation-and-physical-performance-in-elite-and-non-elite-trained-men
#12
B T Crewther, J Carruthers, L P Kilduff, C E Sanctuary, C J Cook
To advance our understanding of the hormonal contribution to athletic performance, we examined the temporal associations between individual changes in testosterone (T) and/or cortisol (C) concentrations, training motivation and physical performance in elite and non-elite trained men. Two male cohorts classified as elites (n = 12) and non-elites (n = 12) completed five testing sessions over a six-week period. The athletes were tested for salivary T, C, T/C ratio, self-perceived training motivation, countermovement jump (CMJ) height and isometric mid-thigh pull peak force (IMTP PF), after which an actual training workout was performed...
September 2016: Biology of Sport
https://www.readbyqxmd.com/read/27445850/two-consecutive-days-of-crossfit-training-affects-pro-and-anti-inflammatory-cytokines-and-osteoprotegerin-without-impairments-in-muscle-power
#13
Ramires A Tibana, Leonardo M de Almeida, Nuno M Frade de Sousa, Dahan da Cunha Nascimento, Ivo V de Sousa Neto, Jeeser A de Almeida, Vinicius C de Souza, Maria de Fátima T P L Lopes, Otávio de Tolêdo Nobrega, Denis C L Vieira, James W Navalta, Jonato Prestes
The aim of this study was to investigate the effects of two consecutive Crossfit® training sessions (24 h apart) designed to enhance work-capacity that involved both cardiovascular and muscular exercises on cytokines, muscle power, blood lactate and glucose. Nine male members of the CrossFit® community (age 26.7 ± 6.6 years; body mass 78.8 ± 13.2 kg; body fat 13.5 ± 6.2%; training experience 2.5 ± 1.2 years) completed two experimental protocols (24 h apart): (1) strength and power exercises, (2) gymnastic movements, and (3) metabolic conditioning as follows: 10 min of as many rounds as possible (AMRAP) of 30 double-unders and 15 power snatches (34 kg)...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27429596/the-effect-of-acute-pre-workout-supplementation-on-power-and-strength-performance
#14
Nic Martinez, Bill Campbell, Madison Franek, Laura Buchanan, Ryan Colquhoun
BACKGROUND: Consumption of pre-workout dietary supplements by both recreational and competitive athletes has increased dramatically in recent years. The purpose of this study was to determine the acute effects of a caffeine-containing pre-workout dietary supplement on various measures of performance including anaerobic power, upper and lower body power, and upper body strength in recreationally trained males. METHODS: Thirteen males (mean ± SD age = 24 ± 6 yrs; height = 180...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27360044/effects-of-short-term-pre-workout-supplement-ingestion-at-different-dosages-on-exercise-performance-901-board-217-june-1-3-30-pm-5-00-pm
#15
Y P Jung, M Koozechian, A O'Connor, S Shin, P B Collins, R Dalton, T Grubic, R Sowinski, B K Sanchez, A Coletta, M Cho, A Reyes, C Rasmussen, P S Murano, M Greenwood, C P Earnest, R B Kreider
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27359508/dose-dependent-safety-study-of-a-pre-workout-dietary-supplement-in-resistance-training-participants-253-board-90-june-1-9-30-am-11-00-am
#16
Majid S Koozehchian, P Blaise Collins, Abigail O'Connor, Song Yi Shin, Ryan Dalton, Tylor Grubic, Ryan Sowinski, Y Peter Jung, Brittany K Sanchez, Adriana Coletta, Minye Cho, Aimee Reyes, Chris Rasmussen, Conrad P Ernest, Peter S Murano, Mike Greenwood, Richard B Kreider
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27187097/high-intensity-interval-training-for-cognitive-and-mental-health-in-adolescents
#17
Sarah A Costigan, Narelle Eather, Ronald C Plotnikoff, Charles H Hillman, David R Lubans
PURPOSE: Emerging literature suggests that physical activity and fitness may have a positive effect on cognitive and mental health in adolescents. The purpose of the current study was to evaluate the efficacy of two high-intensity interval training (HIIT) protocols for improving cognitive and mental health outcomes (executive function, psychological well-being, psychological distress, and physical self-concept) in adolescents. METHODS: Participants (n = 65; mean age = 15...
October 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/26962303/the-acute-effects-of-multi-ingredient-pre-workout-ingestion-on-strength-performance-lower-body-power-and-anaerobic-capacity
#18
RANDOMIZED CONTROLLED TRIAL
Andrew R Jagim, Margaret T Jones, Glenn A Wright, Carly St Antoine, Attila Kovacs, Jonathan M Oliver
BACKGROUND: Multi-ingredient pre-workout supplements (MIPS) are popular among resistance trained individuals. Previous research has indicated that acute MIPS ingestion may increase muscular endurance when using a hypertrophy-based protocol but less is known in regard to their effects on strength performance and high intensity running capacity. Therefore, the purpose was to determine if short-term, MIPS ingestion influences strength performance and anaerobic running capacity. METHODS: In a double-blind, randomized, placebo controlled, crossover design; 12 males (19 ± 1 yrs...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/26630199/functional-fitness-testing-results-following-long-duration-iss-missions
#19
Mitzi S Laughlin, Mark E Guilliams, Bruce A Nieschwitz, David Hoellen
INTRODUCTION: Long-duration spaceflight missions lead to the loss of muscle strength and endurance. Significant reduction in muscle function can be hazardous when returning from spaceflight. To document these losses, NASA developed medical requirements that include measures of functional strength and endurance. Results from this Functional Fitness Test (FFT) battery are also used to evaluate the effectiveness of in-flight exercise countermeasures. The purpose of this paper is to document results from the FFT and correlate this information with performance of in-flight exercise on board the International Space Station...
December 2015: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/26595137/current-scientific-evidence-for-a-polarized-cardiovascular-endurance-training-model
#20
REVIEW
Jay R Hydren, Bruce S Cohen
Recent publications have provided new scientific evidence for a modern aerobic or cardiovascular endurance exercise prescription that optimizes the periodization cycle and maximizes potential endurance performance gains in highly trained individuals. The traditional threshold, high volume, and high-intensity training models have displayed limited improvement in actual race pace in (highly) trained individuals while frequently resulting in overreaching or overtraining (physical injury and psychological burnout)...
December 2015: Journal of Strength and Conditioning Research
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