Training monitoring, Athlete

Corey G Morris, Jason A Weber, Kevin J Netto
Morris, CG, Weber, JA, and Netto, KJ. Relationship between mechanical effectiveness in sprint running and force-velocity characteristics of a countermovement jump in Australian rules football athletes. J Strength Cond Res XX(X): 000-000, 2020-This study evaluated the mechanical determinants of 40-m sprint performance in elite Australian Rules Football (ARF) athletes and identified variables of countermovement jumps (CMJs) that related to the sprint. Fourteen elite male ARF athletes (age = 22.7 ± 3.6 years; height = 1...
March 24, 2020: Journal of Strength and Conditioning Research
Cara H Y Cheung, May L Khaw, Victor C W Tam, Michael T C Ying, Shara W Y Lee
Cardiac output (CO) monitoring is useful for sports performance training but most methods are unsuitable as they are invasive or hinder performance. The performance of PhysioFlow (PF), a portable non-invasive transthoracic bioimpedance CO monitor, was evaluated and compared to a reference Doppler CO monitor, USCOM, using a head-up tilt (HUT) test. With ethics committee approval, 20 healthy well-trained athletes were subjected to HUT in a fixed order of 0°, 70°, 30° and 0° for 3 minutes each. Simultaneous haemodynamic measurements using PF and USCOM were made 30s after a change in HUT and analysed using t-tests, analysis of variance and mountain plots...
March 26, 2020: Journal of Applied Physiology
Víctor Cerezuela-Espejo, Alejandro Hernández-Belmonte, Javier Courel-Ibáñez, Elena Conesa-Ros, Ricardo Mora-Rodríguez, Jesús G Pallarés
Training prescription and load monitoring in running activities have benefited from power output (PW ) data obtained by new technologies. Nevertheless, to date, the suitability of PW data provided by these tools is still uncertain. In order to clarify this aspect, the present study aimed to: i) analyze the repeatability of five commercially available technologies for running PW estimation, and ii) examine the concurrent validity through the relationship between each technology PW and oxygen uptake (VO2 ). On two occasions (test-retest), twelve endurance-trained male athletes performed on a treadmill (indoor) and an athletic track (outdoor) three submaximal running protocols with manipulations in speed, body weight and slope...
March 26, 2020: European Journal of Sport Science
Patrick Schober, Lothar A Schwarte
OBJECTIVE: In prehospital helicopter emergency medical service (HEMS) settings, the medical team has limited monitoring options, usually restricted to systemic variables. Regional tissue oxygenation (rO2 ) can be assessed by near-infrared spectroscopy (NIRS), but clinical NIRS monitors are unpractical ("big boxes" and additional cables) in HEMS. As an alternative, we identified a wearable, athlete training NIRS device (Moxy; Idiag, Fehraltorf, Switzerland) and hypothesized that it would be applicable in our HEMS setting...
March 2020: Air Medical Journal
Patrick P J M Schoenmakers, James J Crisell, Kate E Reed
Schoenmakers, PPJM, Crisell, JJ, and Reed, KE. Physiological and perceptual demands of running on a curved nonmotorized treadmill compared with running on a motorized treadmill set at different grades. J Strength Cond Res XX(X): 000-000, 2020-The current study compared the physiological and perceptual demands of running on a commercially available curved nonmotorized treadmill (cNMT) with different incline grades on a motorized treadmill (MT). Ten male team-sport athletes completed, after a familiarization session, a 6-minute run at a target velocity of 2...
March 12, 2020: Journal of Strength and Conditioning Research
Mitchell I Kennedy, Gilbert Moatshe, Lars Engebretsen
In training for and performing in the sporting competitions of the Olympic Games, athletes endure a variety of injuries that can lead to the development of a chronic musculoskeletal condition. Injury surveillance studies are in place for each event to collect epidemiological data in an attempt to enhance injury prevention for future Winter and Summer Olympic Games. Periodic health evaluations also are used to screen for injuries and monitor athletes' health in order to take measures to reduce the risk of reinjury...
March 13, 2020: Journal of Bone and Joint Surgery. American Volume
Daniel Boullosa, Jonathan Esteve-Lanao, Arturo Casado, Leonardo A Peyré-Tartaruga, Rodrigo Gomes da Rosa, Juan Del Coso
Endurance running has become an immensely popular sporting activity, with millions of recreational runners around the world. Despite the great popularity of endurance running as a recreational activity during leisure time, there is no consensus on the best practice for recreational runners to effectively train to reach their individual objectives and improve physical performance in a healthy manner. Moreover, there are lots of anecdotal data without scientific support, while most scientific evidence on endurance running was developed from studies observing both recreational and professional athletes of different levels...
March 15, 2020: Sports
Aaron Heishman, Keldon Peak, Ryan Miller, Brady Brown, Bryce Daub, Eduardo Freitas, Michael Bemben
Monitoring external training load (eTL) has become popular for team sport for managing fatigue, optimizing performance, and guiding return-to-play protocols. During indoor sports, eTL can be measured via inertial measurement units (IMU) or indoor positioning systems (IPS). Though each device provides unique information, the relationships between devices has not been examined. Therefore, the purpose of this study was to assess the association of eTL between an IMU and IPS used to monitor eTL in team sport. Retrospective analyses were performed on 13 elite male National Collegiate Athletic Association (NCAA) Division I basketball players (age: 20...
March 11, 2020: Sports
Marni J Simpson, David G Jenkins, Aaron T Scanlan, Vincent G Kelly
PURPOSE: To examine relationships between external- and internal-workload variables in an elite female netball team, with consideration of positional differences. METHODS: Nine elite female netball athletes had their weekly workloads monitored across their preseason and competition phases of a season. Internal workload was determined using summated heart-rate (HR) zones and session ratings of perceived exertion (sRPE), whereas external workload was determined using inertial movement units and included absolute PlayerLoad (PL), relative PL (PL per minute), accelerations (ACCEL), decelerations (DECEL), jumps, changes of direction (COD), high-intensity events, medium-intensity events, low-intensity events, PL in the forward direction, PL in the sideways direction, and PL in the vertical direction...
March 12, 2020: International Journal of Sports Physiology and Performance
Stephen Crowcroft, Katie Slattery, Erin McCleave, Aaron J Coutts
PURPOSE: To assess a coach's subjective assessment of their athletes' performances and whether the use of athlete-monitoring tools could improve on the coach's prediction to identify performance changes. METHODS: Eight highly trained swimmers (7 male and 1 female, age 21.6 [2.0] y) recorded perceived fatigue, total quality recovery, and heart-rate variability over a 9-month period. Prior to each race of the swimmers' main 2 events, the coach (n = 1) was presented with their previous race results and asked to predict their race time...
March 12, 2020: International Journal of Sports Physiology and Performance
Alberto Franceschi, Daniele Conte, Marco Airale, Jaime Sampaio
PURPOSE: To describe and identify individual trends and changes in training load, neuromuscular readiness, and perceptual fatigue measures in 2 youth elite long jumpers, finalists at the European Athletics U18 (Under 18) Championships (athlete A, female, age 16.5 y, long-jump record 6.25 m; athlete B, male, age 16.0 y, long-jump record 7.28 m). METHODS: Data were collected from both training sessions and athletics competitions during a 16-week period, divided into a preparation (weeks 1-8) and a competitive phase (weeks 9-16)...
March 12, 2020: International Journal of Sports Physiology and Performance
Richard J Simpson, John P Campbell, Maree Gleeson, Karsten Krüger, David C Nieman, David B Pyne, James E Turner, Neil P Walsh
Multiple studies in humans and animals have demonstrated the profound impact that exercise can have on the immune system. There is a general consensus that regular bouts of short-lasting (i.e. up to 45 minutes) moderate intensity exercise is beneficial for host immune defense, particularly in older adults and people with chronic diseases. In contrast, infection burden is reported to be high among high performance athletes and second only to injury for the number of training days lost during preparation for major sporting events...
2020: Exercise Immunology Review
David C Nieman, Arnoud J Groen, Artyom Pugachev, Andrew J Simonson, Kristine Polley, Karma James, Bassem F El-Khodor, Saradhadevi Varadharaj, Claudia Hernández-Armenta
Proteomics monitoring of an elite adventure athlete (age 33 years) was conducted over a 28-week period that culminated in the successful, solo, unassisted, and unsupported two month trek across the Antarctica (1500 km). Training distress was monitored weekly using a 19-item, validated training distress scale (TDS). Weekly dried blood spot (DBS) specimens were collected via fingerprick blood drops onto standard blood spot cards. DBS proteins were measured with nano-electrospray ionization liquid chromatography tandem mass spectrometry (nanoLC-MS/MS) in data-independent acquisition (DIA) mode, and 712 proteins were identified and quantified...
March 3, 2020: Proteomes
Aaron D Heishman, Bryce D Daub, Ryan M Miller, Eduardo D S Freitas, Michael G Bemben
Limited research has paralleled concomitant changes in external training load (eTL) and countermovement jump (CMJ) performance. Therefore, this investigation characterized eTL and CMJ performance changes across preseason training in Division 1 male collegiate basketball athletes, while examining the influence of position (Guard vs. Forward/Center) and scholarship status (Scholarship = S vs. Walk-on = WO). During 22 practices, eTL was monitored in 14 male athletes, with weekly CMJs performed to quantify neuromuscular performance (Jump Height [JH], Flight Time:Contraction Time [FT:CT], Reactive Strength Index Modified [RSIMod ])...
March 2020: Journal of Sports Science & Medicine
Chinchin Wang, Jorge Trejo Vargas, Tyrel Stokes, Russell Steele, Ian Shrier
Injuries occur when an athlete performs a greater amount of activity than what their body can withstand. To maximize the positive effects of training while avoiding injuries, athletes and coaches need to determine safe activity levels. The International Olympic Committee has recommended using the acute:chronic workload ratio (ACWR) to monitor injury risk and has provided thresholds to minimize risk when designing training programs. However, there are several limitations to the ACWR and how it has been analyzed which impact the validity of current recommendations and should discourage its use...
March 3, 2020: Sports Medicine
Anthony Birat, Pierre Bourdier, Alexandre Dodu, Claire Grossoeuvre, Anthony J Blazevich, Virgile Amiot, Anne-Charlotte Dupont, Stéphane Nottin, Sébastien Ratel
The aim of the present study was to examine the effect of 1- and 2-day adventure races on cardiac muscle damage and skeletal muscle soreness and function in young athletes. Twelve male trained adolescents (14-15 years) completed both 1-day (48.2 km) and 2-day (66.0 km) races that included trail running, mountain biking, kayaking, and in-line skating separated by 10 weeks. Myocardial damage biomarker concentrations (cTnI and CK-MB), maximal voluntary isometric contraction (MVIC) torque, perceived knee extensor (KE) muscle soreness (PMS), and drop and squat jump heights were measured before and after each race...
2020: Frontiers in Physiology
Danica Hendry, Kevin Chai, Amity Campbell, Luke Hopper, Peter O'Sullivan, Leon Straker
BACKGROUND: Accurate and detailed measurement of a dancer's training volume is a key requirement to understanding the relationship between a dancer's pain and training volume. Currently, no system capable of quantifying a dancer's training volume, with respect to specific movement activities, exists. The application of machine learning models to wearable sensor data for human activity recognition in sport has previously been applied to cricket, tennis and rugby. Thus, the purpose of this study was to develop a human activity recognition system using wearable sensor data to accurately identify key ballet movements (jumping and lifting the leg)...
February 7, 2020: Sports Medicine—Open
Athanassios Bissas, Giorgos P Paradisis, Gareth Nicholson, Josh Walker, Brian Hanley, Konstantinos Havenetidis, Carlton B Cooke
Bissas, A, Paradisis, GP, Nicholson, G, Walker, J, Hanley, B, Havenetidis, K, and Cooke, CB. Development and maintenance of sprint training adaptations: an uphill-downhill study. J Strength Cond Res XX(X): 000-000, 2020-We examined the development of performance adaptations resulting from an uphill-downhill training program and monitored the decline of adaptations during detraining. Twenty-eight men were randomly assigned to 1 of 2 sprint training groups who trained 3 times per week for 6 weeks and a control group (C)...
February 6, 2020: Journal of Strength and Conditioning Research
Alysson Enes, Gustavo Oneda, Danilo L Alves, Diogo de P Palumbo, Ramon Cruz, José V M Moiano Junior, Luiz F Novack, Raul Osiecki
Purpose : To analyze the contribution of physical measures and external load in the match-based internal load of elite soccer players. Methods : Twenty-three elite soccer players (n = 23, age 26.69 ± 3.93 years, body mass 78.04 ± 5.03 kg, height 178.04 ± 5.19 cm, body fat 10.98 ± 1.25%) from a first division soccer team of the Brazilian Championship were evaluated first with anthropometric and physical measures (flexibility and muscle power of lower limbs), and after 24 hrs they were asked to perform an incremental treadmill test (VO2 max and ventilatory thresholds)...
February 6, 2020: Research Quarterly for Exercise and Sport
Paulo H C Mesquita, Emerson Franchini, Marco A Romano-Silva, Guilherme M Lage, Maicon R Albuquerque
PURPOSE: To investigate the effects of anodal transcranial direct current stimulation (a-tDCS) on the aerobic performance, heart rate (HR), and rating of perceived exertion (RPE) of highly trained taekwondo athletes. METHODS: Twelve (8 men and 4 women) international/national-level athletes received a-tDCS or sham treatment over the M1 location in a randomized, single-blind crossover design. The stimulation was delivered at 1.5 mA for 15 min using an extracephalic bihemispheric montage...
February 4, 2020: International Journal of Sports Physiology and Performance
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