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https://www.readbyqxmd.com/read/28902118/concurrent-training-followed-by-detraining-does-the-resistance-training-intensity-matter
#1
António C Sousa, Daniel A Marinho, Maria H Gil, Mikel Izquierdo, David Rodríguez-Rosell, Henrique P Neiva, Mário C Marques
The aim of the present study was to analyze the training and detraining effects of concurrent aerobic training and resistance training against three different external loads on strength and aerobic variables. Thirty-two men were randomly assigned to four groups: low-load (LLG, n=9), moderate-load (MLG, n=9), high-load (HLG, n=8), and control group (CG, n=6). Resistance training consisted of FS with a low-load (40-55% 1RM), a moderate-load (55-70% 1RM) or a high-load (70-85% 1RM) combined with jump and sprint exercises...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902107/reliability-of-the-maximal-resisted-sprint-load-test-and-relationships-with-performance-measures-and-anthropometric-profile-in-female-field-sport-athletes
#2
George Petrakos, Nicola C Tynan, Adam M Vallely-Farrell, Cillian Kiely, Abdelhak Boudhar, Brendan Egan
Resisted sled sprint (RSS) training is an effective modality for the improvement of linear sprint speed. Previous methods of RSS load prescription e.g. an absolute load or as a percentage of body mass (%BM), do not account for inter-individual differences in strength, power or speed characteristics, although the 'maximum resisted sled load' (MRSL) method of RSS load prescription may provide a solution. MRSL is defined as the final RSS load before an athlete can no longer accelerate between two phases (10-15 m and 15-20 m) of a 20 m linear sprint...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28892463/effect-of-different-velocity-loss-thresholds-during-a-power-oriented-resistance-training-program-on-the-mechanical-capacities-of-lower-body-muscles
#3
Alejandro Pérez-Castilla, Amador García-Ramos, Paulino Padial, Antonio J Morales-Artacho, Belén Feriche
This study compared the effects of two velocity loss thresholds during a power-oriented resistance training program on the mechanical capacities of lower-body muscles. Twenty men were counterbalanced in two groups (VL10 and VL20) based on their maximum power capacity. Both groups used the same exercises, relative intensity and repetition volume, only differing in the velocity loss threshold of each set (VL10: 10% vs. VL20: 20%). Pre- and post-training assessments included an incremental loading test and a 15-m linear sprint to assess the force- and load-velocity relationships and athletic performance variables, respectively...
September 11, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28866864/the-association-between-insulin-resistance-and-atrial-fibrillation-a-cross-sectional-analysis-from-sprint-systolic-blood-pressure-intervention-trial
#4
Monique E Cho, Timothy E Craven, Alfred K Cheung, Stephen P Glasser, Mahboob Rahman, Elsayed Z Soliman, Randall S Stafford, Karen C Johnson, Jeffrey T Bates, Anna Burgner, Addison A Taylor, Leonardo Tamariz, Rocky Tang, Srinivasan Beddhu
It is unclear whether metabolic syndrome (MetS) is associated with atrial fibrillation (AF) in an older population with greater cardiovascular risk, including those with chronic kidney disease. The authors investigated the association between MetS and AF in participants in SPRINT (Systolic Blood Pressure Intervention Trial). MetS was defined based on the Modified Third National Cholesterol Education Program. The baseline prevalence rate for MetS was 55%, while 8.2% of the participants had AF. In multivariate regression analyses, AF was not associated with presence of MetS in either chronic kidney disease or non-chronic kidney disease subgroups...
September 3, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/28860165/influence-of-nutrient-ingestion-on-amino-acid-transporters-and-protein-synthesis-in-human-skeletal-muscle-after-sprint-exercise
#5
Håkan Claes Rundqvist, Mona Esbjörnsson, Olav Rooyackers, Ted Osterlund, Marcus Moberg, William Apró, Eva Blomstrand, Eva Jansson
Nutrient ingestion is known to increase the exercise-induced stimulation of muscle protein synthesis following resistance exercise. Less is known about the effect of nutrients on muscle protein synthesis following sprint exercise. At two occasions separated by one month, twelve healthy subjects performed three 30-s sprints with 20-min rest between bouts. In randomized order, they consumed a drink with essential amino acids and maltodextrin (nutrient) or flavored water (placebo). Muscle biopsies were obtained 80 and 200 min after the last sprint and blood samples were taken repeatedly during the experiment...
August 31, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28859414/physiological-and-biomechanical-mechanisms-of-distance-specific-human-running-performance
#6
M A Thompson
Running events range from 60-m sprints to ultra-marathons covering 100 miles or more, which presents an interesting diversity in terms of the parameters for successful performance. Here, we review the physiological and biomechanical variations underlying elite human running performance in sprint to ultramarathon distances. Maximal running speeds observed in sprint disciplines are achieved by high vertical ground reaction forces applied over short contact times. To create this high force output, sprint events rely heavily on anaerobic metabolism, as well as a high number and large cross-sectional area of type II fibers in the leg muscles...
August 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28857909/affective-adaptation-to-repeated-sit-and-mict-protocols-in-insulin-resistant-subjects
#7
Tiina Saanijoki, Lauri Nummenmaa, Mikko Koivumäki, Eliisa Löyttyniemi, Kari K Kalliokoski, Jarna C Hannukainen
INTRODUCTION: The aim of this study was to investigate affective responses to repeated sessions of sprint interval training (SIT) in comparison with moderate-intensity continuous training (MICT) in insulin resistant subjects. METHODS: Twenty-six insulin resistant adults (age: 49 (4) years, 10 women) were randomized into SIT (n=13) or MICT (n=13) groups. Subjects completed six supervised training sessions within 2 weeks (SIT session: 4-6 × 30 s all-out cycling/4-min recovery; MICT session: 40-60 min at 60% peak work load)...
August 29, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28846611/high-intensity-exercise-can-it-protect-you-from-a-fast-food-diet
#8
Christian Duval, Marc-Antoine Rouillier, Rémi Rabasa-Lhoret, Antony D Karelis
The purpose of this study was to assess the ability of high intensity exercise to counteract the deleterious effects of a fast food diet on the cardiometabolic profile of young healthy men. Fifteen men were subjected to an exclusive fast food diet from a popular fast food restaurant chain (three extra value meals/day + optional snack) for 14 consecutive days. Simultaneously, participants were asked to perform each day high intensity interval training (HIIT) (15 × 60 sec sprint intervals (~90% of maximal heart rate)) on a treadmill...
August 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28834828/intraocular-pressure-responses-to-maximal-cycling-sprints-against-different-resistances-the-influence-of-fitness-level
#9
Jesús Vera, Raimundo Jiménez, Beatriz Redondo, David Cárdenas, Carlos Gustavo De Moraes, Amador Garcia-Ramos
PURPOSE: This study investigated the acute effect of maximal cycling sprint against difference resistances on intraocular pressure (IOP) depending on participants' fitness level. METHODS: In total, 26 physically active collegiate men performed 5 maximal cycling sprints against different resistances in a randomized order, and IOP was measured immediately before and after each sprint. Participants were divided in 2 subgroups (low fit and high fit) according to their maximum power output relative to body weight to assess the influence of fitness level...
August 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28800636/combined-sprint-and-resistance-training-abrogates-age-differences-in-somatotropic-hormones
#10
Maha Sellami, Wissem Dhahbi, Lawrence D Hayes, Johnny Padulo, Fatma Rhibi, Hanen Djemail, Anis Chaouachi
The aim of this investigation was to compare serum growth hormone (GH), insulin-like growth factor-1 (IGF-1) and insulin-like growth factor-binding protein-3 (IGFBP-3) in response to a combined sprint and resistance training (CSRT) program in young and middle-aged men.Thirty-eight healthy, moderately trained men participated in this study. Young and middle-aged men were randomly assigned to, a young training group (YT = 10, 21.4±1.2yrs) ora young control group (YC = 9, 21.6±1.8 yrs), a middle-aged training group (MAT = 10, 40...
2017: PloS One
https://www.readbyqxmd.com/read/28777244/the-effect-of-a-sprint-interval-and-resistance-concurrent-exercise-training-program-on-aerobic-capacity-of-inactive-adult-women
#11
Lorena Salom Huffman, Shelby J Foote, Hayden Hyatt, James R McDonald, Danielle D Wadsworth, David D Pascoe
The purpose of this investigation was to examine the effects of high-intensity concurrent exercise training (CET) consisting of sprint intervals (SIT) and resistance exercise (RET) protocols on aerobic capacity in recreationally active, adult females. Fifty-three participants were pair-matched according to preliminary maximal aerobic capacity (VO2max) Bruce protocol assessment into level-grade (SIT0) or 6% incline (SIT6) groups. This 12-week intervention consisted of three CET sessions per week. SIT protocol consisted of 2 (weeks 1-6) then 3 (weeks 7-12) sets of three 40s sprints at specific intensities to evoke responses equivalent to 95% of age-predicted maximal heart rate (HR) interspersed with 20s of rest; with 1-minute of passive recovery between sets...
August 2, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28748919/changing-concepts-in-hypertension-management
#12
REVIEW
P S Gudsoorkar, S W Tobe
Hypertension is the most common modifiable risk factor for cardiovascular disease and death, and lowering blood pressure with anti-hypertensive drugs reduces target organ damage and prevents cardiovascular disease outcomes. The recent trials SPRINT and HOPE-3 will lead to changes in the way we manage hypertension and impact on clinical practice guidelines. These studies also demonstrate the shift toward automated blood pressure measurements. We have reviewed these studies and others to put them in context with the guidelines that have come before and to describe how they will impact on hypertension treatment thresholds and targets, the treatment of hypertension in the elderly, and changing approaches to the management of hypertension including resistant hypertension...
July 27, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28737609/the-effects-of-supplementary-low-load-blood-flow-restriction-training-on-morphological-and-performance-based-adaptations-in-team-sport-athletes
#13
Brendan R Scott, Jeremiah J Peiffer, Paul S R Goods
Scott, BR, Peiffer, JJ, and Goods, PSR. The effects of supplementary low-load blood flow restriction training on morphological and performance-based adaptations in team sport athletes. J Strength Cond Res 31(8): 2147-2154, 2017-Low-load resistance training with blood flow restriction (BFR) may be a method to enhance muscular development even in trained athletes. This study aimed to assess whether supplemental low-load BFR training can improve muscle size, strength, and physical performance characteristics in team sport athletes...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28723812/effects-of-12-weeks-resistance-training-on-sprint-and-jump-performance-in-competitive-adolescent-rugby-union-players
#14
Simon K Harries, David R Lubans, Anthony Buxton, Thomas H J MacDougall, Robin Callister
Sprint performance is an important characteristic for success in many sports, including rugby union. Resistance training is used to increase muscular fitness (i.e. strength, endurance and power) and may also be effective for improving sprint and jump performances. The aims of this study were to examine the effects of resistance training using two different periodized programs (linear and daily undulating) on sprint and jump performance and explore relationships between performance measures. Sixteen male (16...
July 17, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28722603/molecular-characterization-of-mycobacterium-tuberculosis-strains-with-tb-sprint
#15
Barbara Molina-Moya, Michel Kiréopori Gomgnimbou, Carmen Lafoz, Alicia Lacoma, Cristina Prat, Guislaine Refrégier, Sofia Samper, Jose Dominguez, Christophe Sola
We evaluated Tuberculosis-Spoligo-Rifampicin-Isoniazid Typing (TB-SPRINT), a microbead-based method for spoligotyping and detection of rifampicin and isoniazid resistance in Mycobacterium tuberculosis. For that, 67 M. tuberculosis complex strains were retrospectively selected. Membrane-based spoligotyping, restriction fragment length polymorphism, DNA sequencing/pyrosequencing of rpoB, katG, and inhA promoter, TB-SPRINT, and SNP typing were performed. Concordance between spoligotyping methods was 99.6% (2,785/2,795 spoligotype data points)...
July 10, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28716692/the-fatigue-of-a-full-body-resistance-exercise-session-in-trained-men
#16
Paul W M Marshall, Rebecca Cross, Michael Haynes
OBJECTIVES: We examined the fatigue and recovery for 48h following a full-body resistance exercise session in trained men. DESIGN: Experimental cross-sectional study. METHODS: Eight resistance trained men volunteered to participate (mean±SD; age 27.0±6.0 years, height 1.79±0.05m, weight 81.8±6.8kg, training experience 7.8±5.0 years). Fatigue and pain was measured before, after, 1h post, 24h and 48h post the full-body resistance exercise session, which was based on in-season models used in contact team sports (e...
July 4, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28713468/a-model-for-determining-the-effect-of-the-wind-velocity-on-100-m-sprinting-performance
#17
Natasa Janjic, Darko Kapor, Dragan Doder, Aleksandar Petrovic, Radoslava Doder
This paper introduces an equation for determining instantaneous and final velocity of a sprinter in a 100 m run completed with a wind resistance ranging from 0.1 to 4.5 m/s. The validity of the equation was verified using the data of three world class sprinters: Carl Lewis, Maurice Green, and Usain Bolt. For the given constant wind velocity with the values + 0.9 and + 1.1 m/s, the wind contribution to the change of sprinter velocity was the same for the maximum as well as for the final velocity. This study assessed how the effect of the wind velocity influenced the change of sprinting velocity...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28713281/effectiveness-of-traditional-strength-vs-power-training-on-muscle-strength-power-and-speed-with-youth-a-systematic-review-and-meta-analysis
#18
REVIEW
David G Behm, James D Young, Joseph H D Whitten, Jonathan C Reid, Patrick J Quigley, Jonathan Low, Yimeng Li, Camila D Lima, Daniel D Hodgson, Anis Chaouachi, Olaf Prieske, Urs Granacher
Numerous national associations and multiple reviews have documented the safety and efficacy of strength training for children and adolescents. The literature highlights the significant training-induced increases in strength associated with youth strength training. However, the effectiveness of youth strength training programs to improve power measures is not as clear. This discrepancy may be related to training and testing specificity. Most prior youth strength training programs emphasized lower intensity resistance with relatively slow movements...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28674872/efficacy-of-wearing-compression-garments-during-post-exercise-period-after-two-repeated-bouts-of-strenuous-exercise-a-randomized-crossover-design-in-healthy-active-males
#19
Kazushige Goto, Sahiro Mizuno, Ayaka Mori
BACKGROUND: The efficacy of wearing [a] compression garment (CG) between repeated bouts of exercise within a same day has not been fully understood. The present study determined the effect of wearing a CG after strenuous exercise sessions (consisting of sprint exercise, resistance exercise, drop jump) twice a day on exercise performance, muscle damage, and inflammatory responses. METHODS: Eleven physically active males (age, 22.7 ± 0.9 years; height, 175...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28662108/short-term-adaptations-following-complex-training-in-team-sports-a-meta-analysis
#20
Tomás T Freitas, Alejandro Martinez-Rodriguez, Julio Calleja-González, Pedro E Alcaraz
OBJECTIVE: The purpose of this meta-analysis was to study the short-term adaptations on sprint and vertical jump (VJ) performance following Complex Training (CT) in team-sports. CT is a resistance training method aimed at developing both strength and power, which has a direct effect on sprint and VJ. It consists on alternating heavy resistance training exercises with plyometric/power ones, set for set, on the same workout. METHODS: A search of electronic databases up to July 2016 (PubMed-MEDLINE, SPORTDiscus, Web of Knowledge) was conducted...
2017: PloS One
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