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https://www.readbyqxmd.com/read/28332025/endurance-aerobic-high-intensity-and-repeated-sprint-cycling-performance-is-unaffected-by-normobaric-live-high-train-low-a-double-blind-placebo-controlled-cross-over-study
#1
Jacob Bejder, Andreas Breenfeldt Andersen, Rie Buchardt, Tanja Hultengren Larsson, Niels Vidiendal Olsen, Nikolai Baastrup Nordsborg
The aim was to investigate whether 6 weeks of normobaric "Live High-Train Low" (LHTL) using altitude tents affect highly trained athletes incremental peak power, 26-km time-trial cycling performance, 3-min all-out performance, and 30-s repeated sprint ability. In a double-blinded, placebo-controlled cross-over design, seven highly trained triathletes were exposed to 6 weeks of normobaric hypoxia (LHTL) and normoxia (placebo) for 8 h/day. LHTL exposure consisted of 2 weeks at 2500 m, 2 weeks at 3000 m, and 2 weeks at 3500 m...
March 22, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28331987/hypertension-up-to-date-sprint-to-spyral
#2
REVIEW
Saarraaken Kulenthiran, Sebastian Ewen, Michael Böhm, Felix Mahfoud
Hypertension is the most common chronic cardiovascular condition with increasing prevalence all over the world. Treatment of patients at risk requires a multimodal therapeutic concept to adjust blood pressure, including systematic identification of secondary causes of hypertension or pseudo-resistance, lifestyle modification, polypharmacy, and as well as accompanying risk factors and comorbidities. The present review discusses recent studies on patients with increased cardiovascular risk potentially influencing future treatment strategies...
March 22, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28328713/the-effect-of-standard-strength-vs-contrast-strength-training-on-the-development-of-sprint-agility-repeated-change-of-direction-and-jump-in-junior-male-soccer-players
#3
Mehréz Hammami, Yassine Negra, Roy J Shephard, Mohamed Souhaiel Chelly
Hammami, M, Negra, Y, Shephard, RJ, and Chelly, MS. The effect of standard strength vs. contrast strength training on the development of sprint, agility, repeated change of direction, and jump in junior male soccer players. J Strength Cond Res 31(4): 901-912, 2017-The aim was to compare the impact of 2 differing strength training (ST) programs on the athletic performance of junior male soccer players at a critical phase during their competitive season. Participants aged 16.0 ± 0.5 years were randomly assigned between control (C, n = 12), standard ST (n = 16), and contrast strength training (CST, n = 16), each performed twice a week...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28323574/the-effects-of-an-increased-calorie-breakfast-consumed-prior-to-simulated-match-play-in-academy-soccer-players
#4
Marc A Briggs, Liam D Harper, Ged McNamee, Emma Cockburn, Penny L S Rumbold, Emma J Stevenson, Mark Russell
Dietary analysis of Academy soccer players highlights that total energy and carbohydrate intakes are less than optimal, especially, on match-days. As UK Academy matches predominantly kick-off at ∼11:00 h, breakfast is likely the last pre-exercise meal and thus may provide an intervention opportunity on match-day. Accordingly, the physiological and performance effects of an increased calorie breakfast consumed ∼135-min before soccer-specific exercise was investigated. English Premier League Academy soccer players (n = 7) repeated a 90-min soccer match simulation on two occasions after consumption of habitual (Bhab; ∼1100 kJ) or increased (Binc; ∼2100 kJ) energy breakfasts standardised for macronutrient contributions (∼60% carbohydrates, ∼15% proteins and ∼25% fats)...
March 21, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28322596/motor-imagery-during-action-observation-increases-eccentric-hamstring-force-an-acute-non-physical-intervention
#5
Matthew Scott, Stephen Taylor, Paul Chesterton, Stefan Vogt, Daniel Lloyd Eaves
PURPOSE: Rehabilitation professionals typically use motor imagery (MI) or action observation (AO) to increase physical strength for injury prevention and recovery. Here we compared hamstring force gains for MI during AO (AO + MI) against two pure MI training groups. MATERIALS AND METHODS: Over a 3-week intervention physically fit adults imagined Nordic hamstring exercises in both legs and synchronized this with a demonstration of the same action (AO + MI), or they purely imagined this action (pure MI), or imagined upper-limb actions (pure MI-control)...
March 21, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28322115/lower-extremity-kinematics-of-curve-sprinting-displayed-by-runners-using-a-transtibial-prosthesis
#6
Yumeng Li, Kathy J Simpson, Lee Nolan, Marilyn Miller, Benjamin Johnson
The purpose of the study was to determine if the kinematics exhibited by skilled runners wearing a unilateral, transtibial prosthesis during the curve section of a 200-m sprint race were influenced by interaction of limb-type (prosthetic limb (PROS-L) vs. nonprosthetic limb (NONPROS-L)) and curve-side (inside and outside limb relative to the centre of the curve). Step kinematics, toe clearance and knee and hip flexion/extension, hip ab/adduction for one stride of each limb were generated from video of 13 males running the curve during an international 200 m transtibial-classified competition...
March 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28318450/repeated-sprints-in-fasted-state-impair-reaction-time-performance
#7
Anissa Cherif, Romain Meeusen, Abdulaziz Farooq, Walid Briki, Mohamed Amine Fenneni, Karim Chamari, Bart Roelands
OBJECTIVE: The aim of this study was to assess the effects of 3-day Islamic intermittent fasting (3d-IF) on cognitive performance and serum levels of neurotrophic factors (brain-derived neurotrophic factor [BDNF] and vascular endothelial growth factor [VEGF]) before and after repeated sprints. METHODS: Twenty-one physically active male Muslims (29.8 ± 5.9 years, exercising 4 ± 1.5 times/week) were randomly assigned to one of 2 experimental sessions: the control or nonfasting session (CS) or the fasting session (FS)...
March 20, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28315285/effects-of-plyometric-training-on-physical-fitness-in-prepuberal-soccer-athletes
#8
Yassine Negra, Helmi Chaabene, Senda Sammoud, Raja Bouguezzi, Mohamed Aymen Abbes, Younés Hachana, Urs Granacher
This study aimed at examining the effects of plyometric training on stable (SPT) vs. unstable (UPT) surfaces on physical fitness in prepuberal soccer players. Male athletes were randomly assigned to SPT (n=18; age=12.7±0.2 years) or UPT (n=16; age=12.2±0.5 years). Both groups conducted 3 regular soccer training sessions per week combined with either 2 SPT or UPT sessions. Assessment of jumping ability (countermovement jump [CMJ], and standing long jump [SLJ]), speed (10-m, 20-m, 30-m sprint), agility (Illinois agility test [IAT]), and balance (stable [SSBT], unstable [USBT] stork balance test; stable [SYBT], unstable [UYBT] Y balance test) was conducted pre-and post-training...
March 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28315193/resistance-training-using-different-hypoxic-training-strategies-a-basis-for-hypertrophy-and-muscle-power-development
#9
REVIEW
Belén Feriche, Amador García-Ramos, Antonio J Morales-Artacho, Paulino Padial
The possible muscular strength, hypertrophy, and muscle power benefits of resistance training under environmental conditions of hypoxia are currently being investigated.Nowadays, resistance training in hypoxia constitutes a promising new training strategy for strength and muscle gains. The main mechanisms responsible for these effects seem to be related to increased metabolite accumulation due to hypoxia. However, no data are reported in the literature to describe and compare the efficacy of the different hypertrophic resistance training strategies in hypoxia...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28303909/sprint-interval-training-induces-a-sexual-dimorphism-but-does-not-improve-peak-bone-mass-in-young-and-healthy-mice
#10
Kathrin Koenen, Isabell Knepper, Madlen Klodt, Anja Osterberg, Ioannis Stratos, Thomas Mittlmeier, Tina Histing, Michael D Menger, Brigitte Vollmar, Sven Bruhn, Brigitte Müller-Hilke
Elevated peak bone mass in early adulthood reduces the risk for osteoporotic fractures at old age. As sports participation has been correlated with elevated peak bone masses, we aimed to establish a training program that would efficiently stimulate bone accrual in healthy young mice. We combined voluntary treadmill running with sprint interval training modalities that were tailored to the individual performance limits and were of either high or intermediate intensity. Adolescent male and female STR/ort mice underwent 8 weeks of training before the hind legs were analyzed for cortical and trabecular bone parameters and biomechanical strength...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303248/fitness-effects-of-10-month-frequent-low-volume-ball-game-training-or-interval-running-for-8-10-year-old-school-children
#11
Malte Nejst Larsen, Claus Malta Nielsen, Christina Ørntoft, Morten Bredsgaard Randers, Eva Wulff Helge, Mads Madsen, Vibeke Manniche, Lone Hansen, Peter Riis Hansen, Jens Bangsbo, Peter Krustrup
We investigated the exercise intensity and fitness effects of frequent school-based low-volume high-intensity training for 10 months in 8-10-year-old children. 239 Danish 3rd-grade school children from four schools were cluster-randomised into a control group (CON, n = 116) or two training groups performing either 5 × 12 min/wk small-sided football plus other ball games (SSG, n = 62) or interval running (IR, n = 61). Whole-body DXA scans, flamingo balance, standing long-jump, 20 m sprint, and Yo-Yo IR1 children's tests (YYIR1C) were performed before and after the intervention...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28302687/hspcs-are-marathon-and-not-sprint-relay-athletes
#12
Lambert Busque
No abstract text is available yet for this article.
March 16, 2017: Blood
https://www.readbyqxmd.com/read/28301441/predictors-of-linear-and-multidirectional-acceleration-in-elite-soccer-players
#13
Northeast Jonathan, M Russell, D Shearer, C Cook, L Kilduff
Linear and multidirectional acceleration underpins success in professional soccer match-play. However, the physical qualities that determine these performance indicators are poorly understood in elite players. English Premier League players (n=26) performed isometric mid-thigh pulls (IMTP), bilateral and unilateral drop jumps (DJ; from 40 and 20 cm, respectively), bilateral and unilateral countermovement jumps (CMJ) and assessments of linear (5-, 10-, 20-m) and multidirectional (left/right pre-planned and reactive) acceleration...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28299263/clinical-evaluation-of-coverage-of-open-wounds-polyglycolic-acid-sheet-with-fibrin-glue-spray-vs-split-thickness-skin
#14
Yumi Mochizuki, Hirofumi Tomioka, Fumihiko Tushima, Hiroaki Shimamoto, Hideaki Hirai, Yuu Oikawa, Hiroyuki Harada
PURPOSE: This study aimed to evaluate the coverage of oral wounds using either a polyglycolic acid (PGA) sheet or split-thickness skin grafting (STSG). MATERIALS AND METHODS: A total of 119 cases of wound coverage using a PGA sheet and fibrin glue spray as well as 132 cases of wound coverage cases using STSG were reviewed retrospectively. The site of the excision area, perioperative conditions, and postoperative functional problems were evaluated. RESULTS: The PGA group had significantly shorter operation time, earlier start of oral intake, and shorter hospitalization than the STSG group...
July 2016: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28295686/increased-insulin-stimulated-glucose-uptake-in-both-leg-and-arm-muscles-after-sprint-interval-and-moderate-intensity-training-in-subjects-with-type-2-diabetes-or-prediabetes
#15
Tanja J Sjöros, Marja A Heiskanen, Kumail K Motiani, Eliisa Löyttyniemi, Jari-Joonas Eskelinen, Kirsi A Virtanen, Nina J Savisto, Olof Solin, Jarna C Hannukainen, Kari K Kalliokoski
We investigated the effects of sprint interval (SIT) and moderate intensity continuous training (MICT) on glucose uptake (GU) during hyperinsulinemic euglycemic clamp and fatty acid uptake (FAU) at fasting state in thigh and arm muscles in subjects with type 2 diabetes (T2D) or prediabetes. Twenty-six patients (age 49, SD 4; 10 women) were randomly assigned into two groups: SIT (n=13), and MICT (n=13). The exercise in the SIT group consisted of 4-6 x 30 s of all-out cycling with 4 min recovery and in the MICT group 40-60 min cycling at 60% of VO2peak ...
March 13, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28294700/food-intake-and-appetite-following-school-based-high-intensity-interval-training-in-9-11-year-old-children
#16
Anna Morris, Robert Cramb, Caroline J Dodd-Reynolds
Using a randomised cross-over design, free-living lunch intake and subjective appetite were examined in 10 children (9.8 ± 0.6 years) following high-intensity interval training (HIIT) versus a control sedentary (SED) period, within a school setting. The 22-min HIIT took place during a regular PE lesson and consisted of two rounds of 4 × 30 s sprints. Foods were offered at a regular school lunch immediately following HIIT and SED and were matched between conditions. All food was covertly weighed before and after the meal...
March 15, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28290718/assessments-of-mechanical-stiffness-and-relationships-to-performance-determinants-in-middle-distance-runners
#17
Simon A Rogers, Chris S Whatman, Simon N Pearson, Andrew E Kilding
PURPOSE: This study aimed to examine relationships between methods of lower-limb stiffness and their associations with running economy (RE) and maximal velocity (vmax) in middle-distance (MD) runners. METHODS: Eleven highly-trained male MD runners performed a series of mechanical and physiological tests to determine maximal overground sprint speed, RE and V̇O2peak. Achilles tendon stiffness (kT) was estimated using ultrasonography during maximal isometric ankle plantarflexion...
March 14, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28288203/the-effects-of-menstrual-cycle-phase-on-physical-performance-in-female-soccer-players
#18
Ross Julian, Anne Hecksteden, Hugh H K Fullagar, Tim Meyer
BACKGROUND: Female soccer has grown extensively in recent years, however differences in gender-specific physiology have rarely been considered. The female reproductive hormones which rise and fall throughout the menstrual cycle, are known to affect numerous cardiovascular, respiratory, thermoregulatory and metabolic parameters, which in turn, may have implications on exercise physiology and soccer performance. Therefore, the main aim of the present study was to investigate potential effects of menstrual cycle phase on performance in soccer specific tests...
2017: PloS One
https://www.readbyqxmd.com/read/28286674/the-effect-of-exercise-intensity-on-total-pyy-and-glp-1-in-healthy-females-a-pilot-study
#19
Jillian R Hallworth, Jennifer L Copeland, Jon Doan, Tom J Hazell
We compared the acute response of anorexigenic signals (total PYY and GLP-1) in response to submaximal and supramaximal exercise. Nine females completed three sessions: (1) moderate-intensity continuous training (MICT; 30 min; 65%  VO2max); (2) sprint interval training (SIT; 6 × 30 sec "all-out" cycling sprints with 4 min recovery); or (3) control (CTRL; no exercise). PYY and GLP-1 were measured via blood samples drawn before, immediately after, and 90 min after exercise. Perceptions of hunger were rated using a visual analogue scale at all blood sampling time points...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28284813/blood-pressure-differences-between-one-automatic-measurement-and-the-mean-value-of-3-automatic-measurements-sprint-trial
#20
Luis Rodríguez Padial, Antonio Segura Fragoso, Francisco Javier Alonso Moreno, Miguel A Arias, Alejandro Villarín Castro, Gustavo Cristóbal Rodríguez Roca
BACKGROUND AND OBJECTIVES: There are discrepancies regarding how to measure blood pressure (BP). The goal of this study was to determine the differences between one automatic BP measurement and the mean of 3 automatic BP measurements. PATIENTS AND METHOD: Two patient populations were used. A sample population (n=1,337) in which the measurement was performed by a nurse at the health center, and a consecutive series of patients (n=200) who had the measurement performed in front of the doctor in the office...
March 8, 2017: Medicina Clínica
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