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https://www.readbyqxmd.com/read/29912858/effect-of-caffeine-on-sprint-cycling-in-experienced-cyclists
#1
Dawn E Anderson, Sarah E LeGrand, Reece D McCart
Anderson, DE, LeGrand, SE, and McCart, RD. Effect of caffeine on sprint cycling in experienced cyclists. J Strength Cond Res XX(X): 000-000, 2018-Research regarding the ergogenic effects of caffeine (CAF) in anaerobic activity remains inconclusive. However, some researchers have found significant improvements in anaerobic performance when testing specifically trained athletes. A double-blind, placebo-controlled, counterbalanced, cross-over design was implemented to assess the impact of CAF on a 30-second Wingate Anaerobic Test (WAnT) in experienced cyclists...
June 15, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29910429/effect-of-new-zealand-blackcurrant-extract-on-performance-during-the-running-based-anaerobic-sprint-test-in-trained-youth-and-recreationally-active-male-football-players
#2
Charlie Godwin, Matthew D Cook, Mark E T Willems
It was observed previously that New Zealand blackcurrant (NZBC) extract reduced slowing of the maximal 15 m sprint speed during the Loughborough Intermittent Shuttle Test. We examined the effect of NZBC extract on the performance of the Running Based Anaerobic Sprint Test (RAST, 6 × 35-m sprints with 10 seconds passive recovery) in trained youth and recreationally active football players. Fifteen recreationally active (University team) (age: 20 ± 1 years, height: 174 ± 19 cm, body mass: 80 ± 13 kg) and nine trained youth players (English professional club) (age: 17 ± 0 years, height: 178 ± 8 cm, body mass: 69 ± 9 kg, mean ± SD) participated in three testing sessions...
September 15, 2017: Sports (Basel)
https://www.readbyqxmd.com/read/29910417/effects-of-heart-rate-vs-speed-based-high-intensity-interval-training-on-aerobic-and-anaerobic-capacity-of-female-soccer-players
#3
Hamid Arazi, Abbas Keihaniyan, Amin EatemadyBoroujeni, Amir Oftade, Sheida Takhsha, Abbas Asadi, Rodrigo Ramirez-Campillo
The purpose of this study was to compare the effects of two types of high-intensity interval training (HIIT) programs on aerobic and anaerobic capacity of female soccer players. Regional-level female athletes were randomly divided into heart rate-based HIIT ( n = 8; age 23.4 ± 1.1 year) and speed-based HIIT groups ( n = 8; age 23.4 ± 1.3 year). Athletes trained three days per week for six weeks. Before and after training, each athlete's performance was assessed directly through the Hoff test, 30-15 Intermittent Fitness Test (VIFT), and repeated-sprint ability test (RAST); maximal oxygen consumption (VO₂max), power and fatigue were estimated indirectly...
August 4, 2017: Sports (Basel)
https://www.readbyqxmd.com/read/29910358/a-comparison-of-aerobic-fitness-testing-on-a-swim-bench-and-treadmill-in-a-recreational-surfing-cohort-a-pilot-study
#4
Hamzeh Khundaqji, Enad Samain, Mike Climstein, Ben Schram, Wayne Hing, James Furness
The intermittent manner of surfing accentuates the importance of both the aerobic and anaerobic energy systems. Currently, the optimal method of assessing surfing-specific aerobic fitness is using a swim bench (SWB) ergometer; however, their limited availability presents a barrier to surfers wanting to know their maximal aerobic power (VO2peak ). As a result, the aims of this pilot study were to determine the VO2peak of recreational surfers using a new commercial SWB ergometer and to propose and examine the feasibility of a regression model to predict SWB ergometer VO2peak values...
June 11, 2018: Sports (Basel)
https://www.readbyqxmd.com/read/29910318/seasonal-variations-in-physical-fitness-and-performance-indices-of-elite-soccer-players
#5
Yoav Meckel, Ofer Doron, Eyal Eliakim, Alon Eliakim
The aim of the study was to investigate seasonal variations in fitness and performance indices of professional male soccer players. Eighteen professional male soccer players (age range 22⁻32 years) completed three similar sets of tests at three stages of the season: before preseason; after preseason and the middle of the competitive in-season. A significant decrease in body mass and percent fat was found during the preseason. A significant improvement ( p < 0.05) was found in the vertical jump (preseason: 37...
February 13, 2018: Sports (Basel)
https://www.readbyqxmd.com/read/29910314/cancer-and-exercise-warburg-hypothesis-tumour-metabolism-and-high-intensity-anaerobic-exercise
#6
REVIEW
Peter Hofmann
There is ample evidence that regular moderate to vigorous aerobic physical activity is related to a reduced risk for various forms of cancer to suggest a causal relationship. Exercise is associated with positive changes in fitness, body composition, and physical functioning as well as in patient-reported outcomes such as fatigue, sleep quality, or health-related quality of life. Emerging evidence indicates that exercise may also be directly linked to the control of tumour biology through direct effects on tumour-intrinsic factors...
January 31, 2018: Sports (Basel)
https://www.readbyqxmd.com/read/29910305/the-three-month-effects-of-a-ketogenic-diet-on-body-composition-blood-parameters-and-performance-metrics-in-crossfit-trainees-a-pilot-study
#7
Wesley C Kephart, Coree D Pledge, Paul A Roberson, Petey W Mumford, Matthew A Romero, Christopher B Mobley, Jeffrey S Martin, Kaelin C Young, Ryan P Lowery, Jacob M Wilson, Kevin W Huggins, Michael D Roberts
Adopting low carbohydrate, ketogenic diets remains a controversial issue for individuals who resistance train given that this form of dieting has been speculated to reduce skeletal muscle glycogen levels and stifle muscle anabolism. We sought to characterize the effects of a 12-week ketogenic diet (KD) on body composition, metabolic, and performance parameters in participants who trained recreationally at a local CrossFit facility. Twelve participants (nine males and three females, 31 ± 2 years of age, 80...
January 9, 2018: Sports (Basel)
https://www.readbyqxmd.com/read/29898738/serum-concentration-of-cobalt-molybdenum-and-zinc-in-aerobic-anaerobic-and-aerobic-anaerobic-sportsmen
#8
Marcos Maynar, Francisco Llerena, Francisco Javier Grijota, Mario Pérez-Quintero, Ignacio Bartolomé, Javier Alves, María Concepción Robles, Diego Muñoz
BACKGROUND: The aim of the present study was to determine changes in the serum concentrations of trace elements Cobalt (Co), Molybdenum (Mo) and Zinc (Zn) among high-level sportsmen. METHODS: Eighty professional athletes of different metabolic modalities (aerobic, anaerobic and aerobic-anaerobic), were recruited before the beginning of their training seasons. Thirty-one sedentary participants of the same geographic area constituted the control group. Co, Mo and Zn analysis was performed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS)...
June 13, 2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29867580/validity-and-reliability-of-the-30-s-continuous-jump-for-anaerobic-power-and-capacity-assessment-in-combat-sport
#9
Drazen Čular, Vladimir Ivančev, Alessandro M Zagatto, Mirjana Milić, Tea Beslija, Maha Sellami, Johnny Padulo
Cycling test such Wingate anaerobic test (WAnT) is used to measure anaerobic power (AP), but not anaerobic capacity (AC, i.e., the metabolic energy demand). However, in sports that do not involve cycling movements (Karate), the continuous jump for 30 s (vertical jumps for 30 s) has been extensively used to measure anaerobic performance in all young athletes. Limited information's are available concerning its validity and reliability especially in children. As such, the current study aimed to test validity and reliability of a continuous jumps test (the CJ30s), using WAnT as a reference...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29866199/individualized-hydration-plans-improve-performance-outcomes-for-collegiate-athletes-engaging-in-in-season-training
#10
David Ayotte, Michael P Corcoran
BACKGROUND: Athletes commonly consume insufficient fluid and electrolytes just prior to, or during training and competition. Unlike non-athletes or athletes who do not engage in frequent rigorous and prolonged training sessions, "hard trainers" may require additional sodium and better benefit from a hydration plan tailored to their individual physiology. The purpose of this randomized cross-over study was to determine whether a hydration plan based off of an athlete's sweat rate and sodium loss improves anaerobic and neurocognitive performance during a moderate to hard training session as well as heart rate recovery from this session...
June 4, 2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29849903/swim-training-modulates-skeletal-muscle-energy-metabolism-oxidative-stress-and-mitochondrial-cholesterol-content-in-amyotrophic-lateral-sclerosis-mice
#11
Damian Jozef Flis, Katarzyna Dzik, Jan Jacek Kaczor, Malgorzata Halon-Golabek, Jedrzej Antosiewicz, Mariusz Roman Wieckowski, Wieslaw Ziolkowski
Recently, in terms of amyotrophic lateral sclerosis (ALS), much attention has been paid to the cell structures formed by the mitochondria and the endoplasmic reticulum membranes (MAMs) that are involved in the regulation of Ca2+ signaling, mitochondrial bioenergetics, apoptosis, and oxidative stress. We assumed that remodeling of these structures via swim training may accompany the prolongation of the ALS lifespan. In the present study, we used transgenic mice with the G93A hmSOD1 gene mutation. We examined muscle energy metabolism, oxidative stress parameters, and markers of MAMs (Caveolin-1 protein level and cholesterol content in crude mitochondrial fraction) in groups of mice divided according to disease progression and training status...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29847529/eight-week-battle-rope-training-improves-multiple-physical-fitness-dimensions-and-shooting-accuracy-in-collegiate-basketball-players
#12
Wei-Han Chen, Huey-June Wu, Shin-Liang Lo, Hui Chen, Wen-Wen Yang, Chen-Fu Huang, Chiang Liu
Chen, WH, Wu, HJ, Lo, SL, Chen, H, Yang, WW, Huang, CF, and Liu, C. Eight-week battle rope training improves multiple physical fitness dimensions and shooting accuracy in collegiate basketball players. J Strength Cond Res XX(X): 000-000, 2018-Basketball players must possess optimally developed physical fitness in multiple dimensions and shooting accuracy. This study investigated whether (battle rope [BR]) training enhances multiple physical fitness dimensions, including aerobic capacity (AC), upper-body anaerobic power (AnP), upper-body and lower-body power, agility, and core muscle endurance, and shooting accuracy in basketball players and compared its effects with those of regular training (shuttle run [SR])...
May 28, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29846435/apolipoprotein-b-and-angiotensin-converting-enzyme-polymorphisms-and-aerobic-interval-training-randomized-controlled-trial-in-coronary-artery-disease-patients
#13
N Y Tamburus, R Verlengia, V C Kunz, M C César, E Silva
Physical training has been strongly recommended as a non-pharmacological treatment for coronary artery disease (CAD). Genetic polymorphisms have been studied to understand the biological variability in response to exercise among individuals. This study aimed to verify the possible influence of apolipoprotein B (ApoB: rs1042031 and rs693) and angiotensin-converting enzyme (ACE-ID: rs1799752) genotypes on the lipid profile and functional aerobic capacity, respectively, after an aerobic interval training (AIT) program in patients with CAD and/or cardiovascular risk factors...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29845839/discriminant-analysis-of-cardiovascular-and-respiratory-variables-for-classification-of-road-cyclists-by-specialty
#14
Biljana Nikolić, Jelena Martinović, Milan Matić, Đorđe Stefanović
Different variables determine the performance of cyclists, which brings up the question how these parameters may help in their classification by specialty. The aim of the study was to determine differences in cardiorespiratory parameters of male cyclists according to their specialty, flat rider (N=21), hill rider (N=35) and sprinter (N=20) and obtain the multivariate model for further cyclists classification by specialties, based on selected variables. Seventeen variables were measured at submaximal and maximum load on the cycle ergometer Cosmed E 400HK (Cosmed, Rome, Italy) (initial 100W with 25W increase, 90-100 rpm)...
May 29, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29809076/hip-strength-improves-novice-surface-combat-swimming-flutterkick-performance
#15
Anne Z Beethe, Elizabeth F Nagle, Mita Lovalekar, Takashi Nagai, Bradley C Nindl, Christopher Connaboy
PURPOSE: The current study was designed to examine strength, range of motion (ROM), anthropometric, and physiological contributions to novice surface combat swimming (sCS) performance, and establish differences from freestyle swimming (FS) performance to further understand the transition of FS to sCS performance. METHODS: Thirteen competitive swimmers (7 males, 6 females; 27.7±2.3 years; 176.2±2.6 cm; 75.4±3.9 kg) completed eight testing sessions consisting of the following: physiological land-based measurements for maximal anaerobic and aerobic capacity and upper and lower extremity strength and ROM, a sCS anaerobic capacity swim test measuring peak and mean force and fatigue index, two aerobic capacity tests measuring maximal aerobic capacity for both FS and sCS, and four 500m performance swims for time, one FS and three sCS...
May 29, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29803083/stride-to-stride-variability-and-complexity-between-novice-and-experienced-runners-during-a-prolonged-run-at-anaerobic-threshold-speed
#16
Shiwei Mo, Daniel H K Chow
BACKGROUND: Motor control, related to running performance and running related injuries, is affected by progression of fatigue during a prolonged run. Distance runners are usually recommended to train at or slightly above anaerobic threshold (AT) speed for improving performance. However, running at AT speed may result in accelerated fatigue. It is not clear how one adapts running gait pattern during a prolonged run at AT speed and if there are differences between runners with different training experience...
May 19, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29801189/functional-threshold-power-in-cyclists-validity-of-the-concept-and-physiological-responses
#17
Fernando Klitzke Borszcz, Artur Ferreira Tramontin, Arthur Henrique Bossi, Lorival José Carminatti, Vitor Pereira Costa
Functional threshold power is defined as the highest power output a cyclist can maintain in a quasi-steady state for approximately 60 min (FTP60 ). In order to improve practicality for regular evaluations, FTP60 could theoretically be determined as 95% of the mean power output in a 20-min time trial (FTP20 ). This study tested this assumption and the validity of FTP20 and FTP60 against the individual anaerobic threshold (IAT). Twenty-three trained male cyclists performed an incremental test to exhaustion, 20- and 60-min time trials, and a time to exhaustion at FTP20 ...
May 25, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29796193/effects-of-acute-sleep-deprivation-and-caffeine-supplementation-on-anaerobic-performance
#18
Joss Moore, Ciaran McDonald, Alan McIntyre, Kevin Carmody, Bernard Donne
Purpose: Athletes involved in team sports may be subject to varying degrees of sleep deprivation either before or after training and competition. Despite the belief among athletes and coaches of the importance of adequate sleep for ensuing performance, the effect of sleep loss on team-sport anaerobic performance remains unclear. There is conflicting evidence in the scientific literature as to the impact of acute sleep deprivation and caffeine supplementation on anaerobic performance indices...
January 2018: Sleep Science
https://www.readbyqxmd.com/read/29787610/the-influence-of-somatotype-on-anaerobic-performance
#19
Helen Ryan-Stewart, James Faulkner, Simon Jobson
The link between athlete physique and performance in sports is well established. However, a direct link between somatotype three-numeral rating and anaerobic performance has not yet been reported. The purpose of this study was to assess the relations between somatotype and anaerobic performance using both singular and multivariate analyses. Thirty-six physically active males (mean ± standard deviation age 26.0 ± 9.8 years; body mass 79.5 ± 12.9 kg; height 1.82 ± 0.07 m) were somatotype-rated using the Heath-Carter method...
2018: PloS One
https://www.readbyqxmd.com/read/29770501/correlation-between-cycling-power-and-muscle-thickness-in-cyclists
#20
Hyung-Jin Lee, Kang-Woo Lee, Yong-Woo Lee, Hee-Jin Kim
INTRODUCTION: The aim of this study was to determine the correlation between muscle thickness (MT) and cycling power in varsity cyclists using ultrasonography (US) and to identify any differences in MT between short- and long-distance cyclists. MATERIALS AND METHODS: Twelve cyclists participated in this study. Real-time two-dimensional B-mode US was used to measure the MT in the anterior thigh, anterior lower leg, and trunk, especially in the abdominal and lumbar regions...
May 17, 2018: Clinical Anatomy
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