keyword
MENU ▼
Read by QxMD icon Read
search

Athlete, monitoring performance

keyword
https://www.readbyqxmd.com/read/29342097/time-domain-near-infrared-spectroscopy-device-for-monitoring-muscle-oxidative-metabolism-custom-probe-and-in-vivo-applications
#1
Rebecca Re, Ileana Pirovano, Davide Contini, Lorenzo Spinelli, Alessandro Torricelli
Measurement of muscle oxidative metabolism is of interest for monitoring the training status in athletes and the rehabilitation process in patients. Time domain near infrared spectroscopy (TD NIRS) is an optical technique that allows the non-invasive measurement of the hemodynamic parameters in muscular tissue: concentrations of oxy- and deoxy-hemoglobin, total hemoglobin content, and tissue oxygen saturation. In this paper, we present a novel TD NIRS medical device for muscle oxidative metabolism. A custom-printed 3D probe, able to host optical elements for signal acquisition from muscle, was develop for TD NIRS in vivo measurements...
January 17, 2018: Sensors
https://www.readbyqxmd.com/read/29339983/analysis-of-the-hamstring-muscle-activation-during-two-injury-prevention-exercises
#2
Alireza Monajati, Eneko Larumbe-Zabala, Mark Goss-Sampson, Fernando Naclerio
The aim of this study was to perform an electromyographic and kinetic comparison of two commonly used hamstring eccentric strengthening exercises: Nordic Curl and Ball Leg Curl. After determining the maximum isometric voluntary contraction of the knee flexors, ten female athletes performed 3 repetitions of both the Nordic Curl and Ball Leg Curl, while knee angular displacement and electromyografic activity of the biceps femoris and semitendinosus were monitored. No significant differences were found between biceps femoris and semitendinosus activation in both the Nordic Curl and Ball Leg Curl...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29334328/different-durations-within-the-method-of-best-practice-affect-the-parameters-of-the-speed-duration-relationship
#3
Christoph Triska, Bettina Karsten, Chris Beedie, Bernhard Koller-Zeisler, Alfred Nimmerichter, Harald Tschan
The aim of the study was to determine whether estimates of the speed-duration relationship are affected using different time-trial (TT) field-based testing protocols, where exhaustive times were located within the generally recommended durations of 2-15 min. Ten triathletes (mean ± SD age: 31.0 ± 5.7 years; height: 1.81 ± 0.05 m; body mass: 76.5 ± 6.8 kg) performed two randomly assigned field tests to determine critical speed (CS) and the total distance covered above CS (D´). CS and D´ were obtained using two different protocols comprising three TT that were interspersed by 60 min passive rest...
January 15, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29325894/reference-values-for-the-creatine-kinase-response-to-professional-australian-football-match-play
#4
Luke A G Inman, Michael J Rennie, Mark L Watsford, Nathan J Gibbs, James Green, Robert W Spurrs
OBJECTIVES: Due to the importance of monitoring markers of muscle damage in high-level sport from a medical and athlete recovery perspective, this study aimed to determine the upper limits of normal (ULN) for post-match plasma creatine kinase (CK) in professional Australian footballers. Raw CK values were considered, along with intra-individual deviations from the season-mean. DESIGN: Case series. METHODS: CK was collected between 36-48h following professional Australian football match-play...
December 30, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29324440/micro-patterned-graphene-based-sensing-skins-for-human-physiological-monitoring
#5
Long Wang, Kenneth J Loh, Wei-Hung Chiang, Kausik Manna
Ultrathin, flexible, conformal, and skin-like electronic transducers are emerging as promising candidates for noninvasive and nonintrusive human health monitoring. In this work, a wearable sensing membrane is developed by patterning a graphene-based solution onto ultrathin medical tapes, which can then be attached to the skin for monitoring human physiological parameters and physical activity. Here, the sensor is validated for monitoring finger bending/movements and for recognizing hand motion patterns, thereby demonstrating its future potential for evaluating athletic performance, physical therapy, and designing next-generation human-machine interfaces...
January 11, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29315832/a-valid-and-reliable-method-to-measure-jump-specific-training-and-competition-load-in-elite-volleyball-players
#6
Christopher Skazalski, Rod Whiteley, Clint Hansen, Roald Bahr
PURPOSE: Use of a commercially available wearable device to monitor jump load with elite volleyball players has become common practice. The purpose of this study was to evaluate the validity and reliability of this device, the Vert, to count jumps and measure jump height with professional volleyball players. METHODS: Jump count accuracy was determined by comparing jumps recorded by the device to jumps observed through systematic video analysis of three practice sessions and two league matches performed by a men's professional volleyball team...
January 6, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29283928/maximal-upper-body-strength-and-oxygen-uptake-are-associated-with-performance-in-high-level-200-m-sprint-kayakers
#7
Craig W Pickett, Kazunori Nosaka, James Zois, Will G Hopkins, Anthony J, Blazevich
Current training and monitoring methods in sprint kayaking are based on the premise that upper-body muscular strength and aerobic power are both important for performance, but limited evidence exists to support this premise in high-level athletes. Relationships between measures of strength, maximal oxygen uptake (VO2max) and 200-m race times in kayakers competing at national-to-international levels were examined. Data collected from Australian Canoeing training camps and competitions for 7 elite, 7 national and 8 club level male sprint kayakers were analyzed for relationships between maximal isoinertial strength (3-RM bench press, bench row, chin-up and deadlift), VO2max on a kayak ergometer, and 200-m race time...
December 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29282696/cardiac-biomarkers-release-in-preadolescent-athletes-after-an-high-intensity-exercise
#8
A Peretti, L Mauri, A Masarin, G Annoni, A Corato, A Maloberti, Cristina Giannattasio, G Vignati
INTRODUCTION: An elevation of cardiac troponins has been described in healthy athletes after endurance exercises. The clinical significance of this increase is unclear and the lack of awareness of this phenomenon may lead to inappropriate management of these subjects. AIM: We sought to determine wether an intensive cycling training could determine a biomarkers elevation. METHODS: We evaluated serum high sensitivity cardiac troponin T, NH(2)-terminal pro-brain natriuretic peptide, CK-MB and CK in 21 healthy male preadolescent athletes (age 9...
December 27, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/29278450/effect-of-glucocorticoid-administration-on-the-steroid-profile
#9
Sergi Coll, Xavier Matabosch, Lorena Garrostas, Clara Perez-Maña, Rosa Ventura
The steroid profile (SP) is a powerful tool to detect the misuse of endogenous anabolic androgenic steroids in sports, and it is included in the athlete biological passport (ABP). Glucocorticoids (GCs), which are widely prescribed in sports and are only prohibited in competition by systemic routes, inhibit the hypothalamic-pituitary-adrenal axis. Since the metabolites monitored in the SP have a partial adrenal origin, their excretion in urine might be altered by GCs consumption. The aim of the present work was to investigate if GCs administered by either systemic or local routes could influence the SP parameters...
December 26, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/29259810/capturing-effort-and-recovery-reactive-and-recuperative-cortisol-responses-to-competition-in-well-trained-rowers
#10
Victor L Kallen, Janine H Stubbe, Henk Jan Zwolle, Pierre Valk
Background/aim: It is well known that physical strain is associated with increased cortisol production. And although mental stress elevates cortisol concentrations as well, little is known of the independent and/or combined effects of both on the secretion of cortisol. Aim of the study was to investigate the day-to-day cortisol dynamics associated with training, performance and recuperation and the immediate responses to mental stress and physical endurance under competitive conditions...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29259560/the-energetics-during-the-world-s-most-challenging-mountain-ultra-marathon-a-case-study-at-the-tor-des-geants%C3%A2
#11
Aldo Savoldelli, Alessandro Fornasiero, Pietro Trabucchi, Eloisa Limonta, Antonio La Torre, Francis Degache, Barbara Pellegrini, Grégoire P Millet, Gianluca Vernillo, Federico Schena
Purpose: To provide insights into the energy requirements as well as the physiological adaptations of an experienced 50-year-old ultra-marathon male athlete during the world's most challenging mountain ultra-marathon (MUM). Methods: The international race supporting the study was the Tor des Geants®, characterized by 330 km with +24,000 m D+ to be covered within 150 h. Before the MUM, we assessed the peak oxygen uptake ([Formula: see text]) by means of an incremental graded running test. During the MUM we monitored six ascents (once per race day) with a portable gas analyzer, a GPS and a finger pulse oximeter...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29228408/-biomechanical-evaluation-of-rehabilitation-after-surgical-repair-of-achilles-tendon-ruptures
#12
Marlene Mauch, Markus Ulrich, Xaver Kaelin, Bernhard Segesser, Jochen Paul
Background Muscles and tendons are subjected to a high level of stress in everyday life and sports. This often leads to injuries and is associated with training failure and reduced performance as well as with high costs for treatment and rehabilitation. Fast and successful treatment is therefore very important, both from an athletic and economic point of view. This study aims to demonstrate the relevance of biomechanical procedures for the objective monitoring of rehabilitation. At the same time, the results are to be used to establish progress and evaluation criteria for an efficient and controlled rehabilitation...
December 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29226382/substantial-injuries-influence-ranking-position-in-young-elite-athletes-of-athletics-cross-country-skiing-orienteering
#13
Philip von Rosen, Annette Heijne
The relationship between injury and performance in young athletes is scarcely studied. The aim of this study was therefore to explore the association between injury prevalence and ranking position among adolescent elite athletes. 162 male and female adolescent elite athletes (age range 15-19), competing in athletics (n=59), cross-country skiing (n=66) and orienteering (n=37), were monitored weekly over 22-47 weeks using a web-based injury questionnaire. Ranking lists were collected. A significant (p=.003) difference was found in the seasonal substantial injury prevalence across the ranked athletes over the season, where the top-ranked (median 3...
December 11, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29204453/physical-and-functional-differences-in-youth-baseball-players-with-and-without-throwing-related-pain
#14
Elliot M Greenberg, J Todd R Lawrence, Alicia Fernandez-Fernandez, Kshamata Shah, Casey McKenna, Marcus L Rowan, JongMyung Kim, Phillip McClure
Background: Identifying risk factors that contribute to shoulder and elbow pain within youth baseball players is important for improving injury prevention and rehabilitation strategies. Hypothesis: Differences will exist between youth baseball players with and without a history of upper extremity pain on measures related to growth, shoulder performance, and baseball exposure. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 84 youth baseball players were divided into 2 groups based on self-reported history of throwing-related arm pain...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29198023/the-use-of-stimulant-medication-to-treat-attention-deficit-hyperactivity-disorder-in-elite-athletes-a-performance-and-health-perspective
#15
Annie A Garner, Ashley A Hansen, Catherine Baxley, Michael J Ross
The use of stimulants as a treatment for attention-deficit/hyperactivity disorder (ADHD) among elite athletes is a controversial area with some arguing that stimulant use should not be permitted because it offers an advantage to athletes (fair play perspective). Guided by an integrated model of athletic performance, we address common concerns raised about stimulant use in sports from our perspective, which we coined the "performance and health perspective," highlighting relevant research and pointing to gaps in empirical research that should be addressed before bans on use of stimulants for athletes with ADHD are considered...
December 2, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29194183/hyperactivity-of-the-sympatho-adrenomedullary-system-without-any-modification-of-the-hypothalamic-pituitary-adrenal-axis-following-food-restriction-among-high-level-weightlifters
#16
Alexandre Durguerian, Edith Filaire, Catherine Drogou, Fabien Sauvet, Clément Bougard, Mounir Chennaoui
We examined the effects of six days of food restriction on salivary α-amylase (sAA), cortisol and dehydroepiandrostenedione (DHEA) awakening responses, psychological parameters and performance among eleven international weightlifters. Assessments were made at baseline (T1) and 6 days after a normal period of training while maintaining body weight (T2). Then, participants were assigned into two groups depending on whether they lost (Diet group) or maintained (Control group) their body weight. Anthropometric, psychological, physical and physiological assessments were also realized 6 days (T3) following the restricted dietary period for the Diet group...
November 29, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29189585/muscle-damage-and-metabolic-responses-to-repeated-sprint-running-with-and-without-deceleration
#17
Clare L Minahan, Daniel P Poke, Jaime Morrison, Phillip M Bellinger
This study aimed to determine whether repeated-sprint running with deceleration aggravates markers of muscle damage or delays the recovery of performance compared to repeated-sprint running without deceleration. Fourteen male team-sport athletes performed two randomly ordered testing sessions on a non-motorised treadmill with one session requiring participants to decelerate (TMd) within 4 s before stopping, or immediately step to the side of the treadmill belt at the completion of each sprint (TMa). Peak and mean velocities, speed decrement, blood lactate concentrations and oxygen uptake were monitored during the repeated-sprint running protocols...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29189471/a-novel-approach-to-reducing-workers-compensation-costs-in-a-multicenter-hospital-system
#18
Paul A Ullucci, Joseph Scott, Bradley Silverman
OBJECTIVE: To evaluate the efficacy of an injury prevention and monitoring program implemented by athletic trainers to reduce workers compensation costs in a hospital system with multiple centers and locations. METHODS: A retrospective analysis of workers compensation claims (ie, lost days, light days, and incurred costs) was performed to compare injury data from 2 years before to 2 years after the start of the program. RESULTS: The program significantly reduced the organization's incurred costs by 46...
September 20, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29187343/an-ehealth-application-of-self-reported-sports-related-injuries-and-illnesses-in-paralympic-sport-pilot-feasibility-and-usability-study
#19
Kristina Fagher, Jenny Jacobsson, Örjan Dahlström, Toomas Timpka, Jan Lexell
BACKGROUND: Sport participation is associated with a risk of sports-related injuries and illnesses, and Paralympic athletes' additional medical issues can be a challenge to health care providers and medical staff. However, few prospective studies have assessed sports-related injuries and illnesses in Paralympic sport (SRIIPS) over time. Advances in mobile phone technology and networking systems offer novel opportunities to develop innovative eHealth applications for collection of athletes' self-reports...
November 29, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/29177977/muscle-oximetry-in-sports-science-a-systematic-review
#20
REVIEW
Stephane Perrey, Marco Ferrari
BACKGROUND: Since the introduction (in 2006) of commercially available portable wireless muscle oximeters, the use of muscle near-infrared spectroscopy (NIRS) technology is gaining in popularity as an application to observe changes in muscle metabolism and muscle oxygenation during and after exercise or training interventions in both laboratory and applied sports settings. OBJECTIVES: The objectives of this systematic review were to highlight the application of muscle oximetry in evaluating oxidative skeletal muscle performance to sport activities and emphasize how this technology has been applied to exercise and training...
November 25, 2017: Sports Medicine
keyword
keyword
30422
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"