Read by QxMD icon Read

Athlete, monitoring, training, performance

Tommi Sliiden, Sara Beck, Ian MacDonald
OBJECTIVES: Breathing strategies for athletic dancing are quite different from those needed for legato singing. This study considers the respiration data recorded by a telemetric heart rate monitor, mask, and gas analyzer collected from 20 musical theater professionals performing set tasks. METHODS: Scores were taken of maximum phonation time (MPT), relative oxygen uptake, and heart rate immediately after three tasks: (1) singing only, (2) dancing only, and (3) singing while dancing...
September 22, 2016: Journal of Voice: Official Journal of the Voice Foundation
Andreas Zafeiridis, Anastasia Chrysovalantou Chatziioannou, Haralambos Sarivasiliou, Antonios Kyparos, Michalis G Nikolaidis, Ioannis S Vrabas, Alexandros Pechlivanis, Panagiotis Zoumpoulakis, Constantinos Baskakis, Konstantina Dipla, Georgios A Theodoridis
The overall metabolic/energetic stress that occurs during an acute bout of exercise is proposed to be the main driving force for long-term training adaptations. Continuous and high-intensity interval exercise protocols (HIIE) are currently prescribed to acquire the muscular and metabolic benefits of aerobic training. We applied (1)H NMR-based metabonomics to compare the overall metabolic perturbation and activation of individual bioenergetic pathways of three popular aerobic exercises matched for effort/strain...
October 4, 2016: Journal of Proteome Research
Natalia Romero-Franco, Juan Antonio Montaño-Munuera, Pedro Jiménez-Reyes
CONTEXT: Knee joint position sense (JPS) is a key parameter for optimum performance in many sports, but is frequently negatively affected by injuries and/or fatigue during training sessions. Although evaluation of JPS may provide key information to reduce the risk of injury, it often requires expensive and/or complex tools that make monitoring proprioceptive deterioration difficult. OBJECTIVE: This study sought to analyze the validity and reliability of a digital inclinometer to measure knee JPS in a closed kinetic chain (CKC)...
August 24, 2016: Journal of Sport Rehabilitation
Lachlan P James, Emma M Beckman, Vincent G Kelly, G Gregory Haff
PURPOSE: To determine whether the maximal strength, impulse and power characteristics of competitive mixed martial arts (MMA) athletes differ according to competition level. METHODS: Twenty-nine male semi-professional and amateur MMA competitors were stratified into either higher-level (HL) or lower-level (LL) performers on the basis of competition grade and success. The one-repetition maximum (1RM) squat was used to assess lower body dynamic strength, while a spectrum of impulse, power, force and velocity variables were evaluated during an incremental load jump squat...
September 15, 2016: International Journal of Sports Physiology and Performance
Yann Le Meur, Martin Buchheit, Anaël Aubry, Aaron J Coutts, Christophe Hausswirth
PURPOSE: Faster heart rate recovery (HRR) following high-to-maximal exercise (≥90% HRmax) has been reported in athletes suspected of functional overreaching (f-OR). This study investigated whether this response would also occur at lower exercise intensity. METHODS AND RESULTS: HRR and rate of perceived exertion (RPE) responses were compared during an incremental intermittent running protocol to exhaustion in twenty experienced male triathletes (8 control and 13 overload subjects led to f-OR) before (Pre), immediately after an overload training period (Mid) and following a 1-week taper (Post)...
September 6, 2016: International Journal of Sports Physiology and Performance
Alexandra Coates, Margo Mountjoy, Jamie Burr
OBJECTIVE: To assess the incidence of iron deficiency (ID), and iron deficient anemia (IDA) within a cohort of highly trained runners and triathletes, and to examine the association of oral iron supplementation history with serum ferritin (sFe) and hemoglobin (Hb) concentrations. METHODS: A retrospective analysis of routine blood test data taken from 2009 to 2015 from (n = 38) elite level runners and triathletes between the ages of 21 to 36 years. Oral iron supplement intake was assessed through a questionnaire...
September 5, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
B T Crewther, J Carruthers, L P Kilduff, C E Sanctuary, C J Cook
To advance our understanding of the hormonal contribution to athletic performance, we examined the temporal associations between individual changes in testosterone (T) and/or cortisol (C) concentrations, training motivation and physical performance in elite and non-elite trained men. Two male cohorts classified as elites (n = 12) and non-elites (n = 12) completed five testing sessions over a six-week period. The athletes were tested for salivary T, C, T/C ratio, self-perceived training motivation, countermovement jump (CMJ) height and isometric mid-thigh pull peak force (IMTP PF), after which an actual training workout was performed...
September 2016: Biology of Sport
Pénélope Paradis-Deschênes, Denis R Joanisse, François Billaut
Muscle ischemia and reperfusion induced by ischemic preconditioning (IPC) can improve performance in various activities. However, the underlying mechanisms are still poorly understood. The purpose of this study was to examine the effects of IPC on muscle hemodynamics and oxygen (O2) uptake during repeated maximal contractions. In a cross-over, randomized, single-blind study, 10 strength-trained men performed 5 sets of 5 maximal voluntary knee extensions of the right leg on an isokinetic dynamometer, preceded by either IPC of the right lower limb (3×5-min compression/5-min reperfusion cycles at 200 mm Hg) or sham (20 mm Hg)...
September 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Julien Louis, Laurie-Anne Marquet, Eve Tiollier, Stéphane Bermon, Christophe Hausswirth, Jeanick Brisswalter
PURPOSE: We investigated the effects of a 3-week dietary periodization on immunity and sleep in triathletes. METHODS: 21 triathletes were divided into two groups with different nutritional guidelines during a 3-week endurance training program including nine twice a day sessions with lowered (SL group) or maintained (CON group) glycogen availability during the overnight recovery period. In addition to performance tests, sleep was monitored every night. Systemic and mucosal immune parameters as well as the incidence of URTI were monitored every week of the training/nutrition protocol...
October 2016: European Journal of Applied Physiology
Thomas Paulson, Victoria Goosey-Tolfrey
Despite the growing interest in Paralympic sport, the evidence-base for supporting elite wheelchair sport performance remains in its infancy when compared to able-bodied (AB) sport. Subsequently, current practice is often based on theory adapted from AB guidelines, with a heavy reliance on anecdotal evidence and practitioner experience. Many principles in training prescription and performance monitoring with wheelchair athletes are directly transferable from AB practice, including the periodisation and tapering of athlete loads around competition...
August 24, 2016: International Journal of Sports Physiology and Performance
Daniel Schuster, Paul A Jones
OBJECTIVES: The purpose of this study was to compare the relationships between horizontal (HDJ) and vertical drop jumps (VDJ) to sprint performance. DESIGN: Exploratory Study. SETTING: Laboratory. PARTICIPANTS: Nineteen male collegiate participants (22.5 ± 3.2 years, 181.1 ± 6.7 cm, 80.3 ± 9.6 kg). MAIN OUTCOME MEASURES: All participants performed VDJ and HDJ from a 20 cm height onto an AMTI force platform sampling at 1200 Hz before performing three 20 m sprints...
September 2016: Physical Therapy in Sport
N B Murray, T J Gabbett, A D Townshend, B T Hulin, C P McLellan
A model that takes into account the current workload, and the workload the athlete has been prepared for, as an acute:chronic workload ratio has been previously used as a novel way to monitor training load and injury risk. Fifty-nine elite Australian football players from one club participated in this 2-year study. Global Positioning System technology was used to provide information on running workloads of players. An injury was defined as any non-contact "time-loss" injury. One-week (acute), along with 4-week (chronic) workloads were calculated for a range of variables...
July 15, 2016: Scandinavian Journal of Medicine & Science in Sports
James M Pivarnik, Linda M Szymanski, Michelle R Conway
Highly trained women continue to exercise during pregnancy, but there is little information available to guide them, and their health care providers, in how to maximize performance without jeopardizing the maternal-fetal unit. Available evidence focusing on average women who perform regular vigorous exercise suggests that this activity is helpful in preventing several maladies of pregnancy, with little to no evidence of harm. However, some studies have shown that there may be a limit to how intense an elite performer should exercise during pregnancy...
September 2016: Clinical Obstetrics and Gynecology
Rodrigo Villar, Jason Gillis, Givanildo Santana, Daniel Santos Pinheiro, André L R A Almeida
The aims of this study were to design a specific Jiu-Jitsu anaerobic performance test (JJAPT) and investigate the relationship between blood lactate ([La]), heart rate (HR) and rating of perceived exertion (RPE) during simulated Brazilian Jiu-Jitsu combat (SBJJC) and JJAPT. Nine men elite Brazilian medium heavy weight athletes performed a 10-minute SBJJC and JJAPT that required performance of a common BJJ technique for five consecutive bouts of 1-minute with 45-s rest between bouts. [La] was measured by a lactate analyzer, HR by heart rate monitor, RPE using Borg's scale, and the number of butterfly lifts (NBL) was recorded...
June 29, 2016: Journal of Strength and Conditioning Research
Luana C Main, Stuart A Warmington, Emily Korn, Paul B Gastin
The purpose of the present study was to determine the efficacy of the multi-component training distress scale (MTDS), in monitoring swimmers prior to national competition. Twenty-one national-level adolescent swimmers completed eight weeks of testing. Once a week participants completed an 8 × 50 m sprint test, vertical jump test, sit-and-reach test, the MTDS and the Recovery-Stress Questionnaire for Athletes (REST-Q). All testing was incorporated into the swimmers' normal training programme. The REST-Q accounted for the following variances in performance: flexibility (14...
July 2016: Research in Sports Medicine
Fatemeh Baghbani, Linda J Woodhouse, Abbas A Gaeini
Baghbani, F, Woodhouse, LJ, and Gaeini, AA. Dynamic postural control in female athletes and nonathletes after a whole-body fatigue protocol. J Strength Cond Res 30(7): 1942-1947, 2016-Postural control is a crucial element in regular training of athletes, development of complex technical movement, and injury prevention; however, distributing factor of the postural control such as fatigue has been neglected by athletic trainers in novice and inexperienced athletes. The objective of this study was to compare changes in dynamic postural control of young female athletes and nonathletes after a fatigue protocol...
July 2016: Journal of Strength and Conditioning Research
Rauno Álvaro de Paula Simola, Christian Raeder, Thimo Wiewelhove, Michael Kellmann, Tim Meyer, Mark Pfeiffer, Alexander Ferrauti
The study investigates whether tensiomyography (TMG) is sensitive to differentiate between strength and endurance athletes, and to monitor fatigue after either one week of intensive strength (ST) or endurance (END) training. Fourteen strength (24.1±2.0years) and eleven endurance athletes (25.5±4.8years) performed an intensive training period of 6days of ST or END, respectively. ST and END groups completed specific performance tests as well as TMG measurements of maximal radial deformation of the muscle belly (Dm), deformation time between 10% and 90% Dm (Tc), rate of deformation development until 10% Dm (V10) and 90% Dm (V90) before (baseline), after training period (post1), and after 72h of recovery (post2)...
October 2016: Journal of Electromyography and Kinesiology
Joel T Fuller, Clint R Bellenger, Dominic Thewlis, John Arnold, Rebecca L Thomson, Margarita D Tsiros, Eileen Y Robertson, Jonathan D Buckley
PURPOSE: Stride-to-stride fluctuations in running stride interval display long-range correlations that breakdown in the presence of fatigue accumulated during an exhaustive run. The purpose of our study was to investigate whether long-range correlations in running stride interval were reduced by fatigue accumulated during prolonged exposure to a high training load (functional overreaching) and were associated with decrements in performance caused by functional overreaching. METHODS: Ten trained male runners completed 7-days of light training (LT7), 14-days of heavy training (HT14) designed to induce a state of functional overreaching and 10-days of light training (LT10) in a fixed order...
June 13, 2016: International Journal of Sports Physiology and Performance
Alexander N Eagles, Dale I Lovell
BACKGROUND: Adequate sleep is paramount to athlete recovery and performance, however little is known about the typical sleep patterns of professional rugby union players during home based training and match play in the competitive season. The aim of the present study was to monitor changes in sleep quantity and efficiency of elite male rugby union players over a twelve-night period, which included training and two competitive matches. METHODS: A total of ten elite male rugby union players from a selected team, participated in the study...
May 2016: Journal of Sports Medicine and Physical Fitness
Orsolya Kiss, Nóra Sydó, Péter Vargha, Hajnalka Vágó, Csilla Czimbalmos, Eszter Édes, Endre Zima, Györgyi Apponyi, Gergő Merkely, Tibor Sydó, Dávid Becker, Thomas G Allison, Béla Merkely
OBJECTIVE: Heart rate variability (HRV) analysis has been used to evaluate patients with various cardiovascular diseases. While the vast majority of HRV studies have focused on pathological states, our study focuses on the less explored area of HRV analysis across different training intensity and sports. We aimed to measure HRV in healthy elite and masters athletes and compare to healthy, but non-athletic controls. METHODS: Time-domain HRV analysis was applied in 138 athletes (male 110, age 28...
August 2016: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
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"