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Pearcey Gregory E P GE School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, NL, Canada, A1C - - 2014
Introduction: We studied the time course of neuromuscular fatigue during maximal intensity intermittent-sprint cycling. Methods: Eight participants completed 10, 10s sprints interspersed with 180s of recovery. The power outputs were recorded for each sprint. Knee extensor maximum voluntary contraction (MVC) force, voluntary activation, and evoked contractile properties were recorded pre-sprint, ...
Cunha F A FA Laboratório de Atividade Física e Promoção da Saúde, Programa de Pós-Graduação em Ciências Médicas, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, - - 2014
The main purpose of this study was to investigate the level of agreement between the gas exchange threshold (GET) and heart rate variability threshold (HRVT) during maximal cardiopulmonary exercise testing (CPET) using three different exercise modalities. A further aim was to establish whether there was a 1:1 relationship between the ...
Barwood Martin J MJ Department of Sport, Exercise and Rehabilitation, University of Northumbria, Newcastle Upon Tyne, - - 2014
Unpleasant physical sensations during maximal exercise may manifest themselves as negative cognitions that impair performance, alter pacing and are linked to increased RPE. This study examined whether motivational self-talk (M-ST) could reduce RPE and change pacing strategy thereby enhancing 10 km time trial (TT) cycling performance in contrast to neutral ...
Skorski Sabrina S 1 Institute of Sports and Preventive Medicine, Saarland University, Saarbrücken, GERMANY; 2 Institute of Sports Science, Johannes-Gutenberg University, Mainz, GERMANY; 3 Faculty of Sports Science, Ruhr-University of Bochum, Bochum, GERMANY; and 4 School of Human Movement Studies and School of Psychology, The University of Queensland, Brisbane, - - 2014
In some endurance sports athletes complete several competitions within a short period of time, resulting in accumulated fatigue. It is unclear if fatigued athletes choose the same pacing pattern (PP) as when they are recovered. To analyze effects of fatigue on PP of cyclists during a 40 km time trial ...
Ijichi Toshiaki T a Graduate School of Sport and Health Science , Ritsumeikan University , Kusatsu Shiga , - - 2014
Abstract This study compared training adaptations between once daily (SINGLE) and twice every second day (REPEATED) sprint training, with same number of training sessions. Twenty physically active males (20.9 ± 1.3 yr) were assigned randomly to the SINGLE (n = 10) or REPEATED (n = 10) group. The SINGLE group ...
Garvican-Lewis Laura Anne LA Research Institute for Sport and Exercise - - 2014
Plasma volume can be modulated by altitude exposure (decrease) and periods of intense exercise (increase). Cycle racing at altitude combines both stimuli, although presently no data exist to document which is dominant. Hemoglobin mass (Hbmass), hemoglobin concentration [Hb], and percent reticulocytes (%Retics) of altitude (ALT, n=9) and sea-level (SL, n=9) ...
Stanton Robert R Central Queensland University, Institute for Health and Social Science Research, Centre for Mental Health Nursing Innovation and School of Nursing and Midwifery, Rockhampton, Queensland, - - 2014
A number of studies demonstrate the positive benefits of exercise for people with schizophrenia and schizoaffective disorders; however the exercise program variables resulting in these positive effects have not been evaluated. Therefore the aim of this systematic review was to describe the aerobic exercise program variables used in randomized controlled ...
Watson Martin M Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), University of Strathclyde, Glasgow, United - - 2014
In a laboratory setting in which both a mechanically-braked cycling-ergometer and a motion analysis (MA) system are available, flywheel angular displacement can be estimated by using MA. The purpose of this investigation was to assess the validity and reliability of a MA method for measuring maximal power output (Pmax), in ...
Racinais Sebastien S 1Athlete Health and Performance Research Centre, Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar; 2Department of Nutrition, Exercise and Sports, Section of Integrative Physiology, University of Copenhagen, - - 2014
To determine the effects of heat-acclimatization on performance and pacing during outdoor cycling time-trials (TT, 43.4km) in the heat. Nine cyclists performed 3 TTs in hot ambient conditions (TTH, ∼37ºC) on the first (TTH-1), sixth (TTH-2) and fourteenth (TTH-3) days of training in the heat. Data were compared to the ...
Yamashita Naoyuki N 1Laboratory for Exercise Physiology and Biomechanics, Graduate School of Health and Sport Sciences, Chukyo University, Toyota, Japan. 2University Educational Center, Nihon Fukushi University, Mihama-Cho, Japan 3Department of Human Health, Faculty of Human Studies, Aichi Toho University, Nagoya, - - 2014
The level of hypohydration at which power output during intermittent-exercise performance starts to decrease is not fully understood. The purpose of this study was to investigate the effects of 2% hypohydration without hyperthermia on intermittent-exercise performance. Eight collegiate amateur boxers completed two exercise tests. On day 1, subjects hypohydrated by ...
Gill Matthew M Duke University Medical - - 2014
Hyperoxia during diving has been suggested to exacerbate hypercapnic narcosis and promote unconsciousness. We tested this hypothesis in male volunteers (12 at rest, 10 at 75 W cycle ergometer exercise) breathing each of four gases. Inspired PO2 (PIO2) was 0.21 and 1.3 atmospheres (atm) without or with an individual subject's ...
Schroer Adam B AB James Madison University, Harrisonburg, - - 2014
Previous studies reported that adding protein (PRO) to carbohydrate (CHO) solutions enhances endurance performance. The ergogenic effect may be a function of additional protein/amino acid calories, but this has not been examined. Additionally, although supplemental L-alanine (ALA) is readily oxidized during exercise, the subsequent impact on metabolism and prolonged endurance ...
Rodrigues Rodrigo R 1Exercise Research Laboratory, School of Physical Education, Federal University of Rio Grande do - - 2014
Dehydration can impair aerobic performance, but its effects on muscular strength are still unclear. This study evaluated the effect of dehydration induced by cycling in the heat on exercised (knee extensors) and non-exercised (elbow flexors) muscles' strength and activation. Ten healthy recreationally active and non-acclimatized males (age = 22.71 ± ...
West Amy D AD 1Department of Pediatric Endocrinology, The School of Medicine & Children's Hospital, University of Colorado, Denver, Aurora, CO USA 80045* 2College of Health and Biomedicine, University of Victoria, Melbourne, VIC, 3000, Australia 3Department of Health, Human Performance, and Recreation, Baylor University, Waco, TX USA76798-7313 4Department of Kinesiology, Angelo State University, San Angelo, TX 76909-0903 5Department of Health and Kinesiology, Exercise & Sport Nutrition, Texas A & M University, College Station, TX USA - - 2014
The purpose of this study was to compare the effectiveness of 3 treatment modes [Anti-Gravity Treadmill (G-trainer), stationary cycling (CompuTrainer), and static stretching] on the physiological and psychological recovery following an acute bout of exhaustive exercise. In a cross-over design, twelve aerobically-trained males (21.3±2.3 yrs., 72.1±8.1 kg, 178.4±6.3cm, VO2peak: 53.7±6.3 ...
Runciman Phoebe P From the UCT/MRC Research Unit for Exercise Science and Sports Medicine, University of Cape Town (PR, WD, YA-K, RT); International Olympic Committee Research Centre, Cape Town (WD); and Department of Sport Science, Stellenbosch University, South Africa - - 2014
This study investigated the sprint cycling performance and neuromuscular characteristics of Paralympic athletes with cerebral palsy (CP) during a fatiguing maximal cycling trial compared with those of able-bodied (AB) athletes. Five elite athletes with CP and 16 AB age- and performance-matched controls performed a 30-sec Wingate cycle test. Power output ...
Noordhof Dionne A DA MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University Amsterdam, The - - 2014
To evaluate if gross efficiency (GE), determined during submaximal cycling, is lower after time trials and if the magnitude of the decrease differs in relation to race distance. Secondary purposes were to study the rate of the decline in GE and if changes in muscle fiber recruitment could explain the ...
Mulder R C M CM MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University Amsterdam, The - - 2014
Previous research showed that gross efficiency (GE) declines during exercise and therefore influences the expenditure of anaerobic and aerobic resources. To calculate the anaerobic work produced during cycling time trials of different length, with and without a GE correction. Anaerobic work was calculated in eighteen trained competitive cyclists during four ...
Fornusek C C Exercise Health and Performance Research Group, Faculty of Health Sciences, University of Sydney, Sydney, - - 2014
Study design:Prospective experimental.Objectives:To compare the cardiorespiratory responses with electrical stimulation (ES) producing either dynamic leg cycling or intermittent isometric leg contractions using the same ES protocol.Setting:Sydney, Australia.Methods:Eight paraplegics (T4-T11) performed ES exercise sessions on two separate days. On day 1, cardiorespiratory responses were measured during 5 min of rest followed by ...
Hill D W DW Applied Physiology Laboratory Department of Kinesiology, Health Promotion and Recreation, University of North Texas Denton, TX, USA - - - 2014
The purpose of this study was to compare values of maximal accumulated oxygen deficit (MAOD; a measure of anaerobic capacity) and peak post-exercise blood lactate concentration ([lactate]; a reflection of glycolytic contribution) in running and cycling, in women and men. One hundred and nineteen women and 104 men performed an ...
Alkahtani Shaea A SA Department of Physical Education, University of Dammam, P.O. Box 2375 Dammam, 31451, Saudi Arabia. - - 2014
This study investigated the influence of two different intensities of acute interval exercise on food preferences and appetite sensations in overweight and obese men. Twelve overweight/obese males (age=29.0±4.1 years; BMI =29.1±2.4 kg/m2) completed three exercise sessions: an initial graded exercise test, and two interval cycling sessions: moderate-(MIIT) and high-intensity (HIIT) ...
Maciejczyk Marcin M University School of Physical Education Institute of Biomedical Sciences al. Jana Pawła II 78 31-571 Kraków - - 2014
The purpose of this study was to determine whether metabolic cost is similar in overweight and normoweight children when workload during exercise on a cycle-ergometer is adjusted relative to an objectively determined second ventilatory threshold (VT2) or the maximal workload (Pmax). The tests were conducted every 2 years: first at ...
Labelle Veronique V Centre de recherche, Institut universitaire de Gériatrie de Montréal and with the Université du Québec à Montréal, Montréal, - - 2014
The purpose of this study was to assess the effects of exercise intensity, age, and fitness levels on executive and nonexecutive cognitive tasks during exercise. Participants completed a computerized modified-Stroop task (including denomination, inhibition, and switching conditions) while pedaling on a cycle ergometer at 40%, 60%, and 80% of peak ...
Kim Tae-Jun TJ Division of Cardiology, Hallym Sacred Heart Hospital, Hallym University College of Medicine, Anyang, - - 2014
A 51-year-old highly fit man presented for dyspnea with strenuous aerobic exercise. The patient was asymptomatic and all tests were normal at rest. With increasing exercise intensity, he suddenly complained of dyspnea and showed a severe exercise-induced hypoxemia with an excessive alveolar-arterial oxygen tension difference. In agitated saline contrast echocardiography ...
Andrianopoulos Vasileios - - 2014
Exercise tolerance can be assessed by the cycle endurance test (CET) and six-minute walk test (6MWT) in patients with Chronic Obstructive Pulmonary Disease (COPD). We sought to investigate the characteristics of functional exercise performance and determinants of the CET and 6MWT in a large clinical cohort of COPD patients. A ...
Rønnestad B R BR Section for Sport Science, Lillehammer University College, Lillehammer, - - 2014
The purpose was to investigate the effect of 25 weeks heavy strength training in young elite cyclists. Nine cyclists performed endurance training and heavy strength training (ES) while seven cyclists performed endurance training only (E). ES, but not E, resulted in increases in isometric half squat performance, lean lower body mass, ...
Andrade Marília Santos - - 2014
A dynamic sub-maximum exercise with the same absolute intensity, performed with different muscle groups, may present exacerbated cardiorespiratory responses. Therefore, cardiorespiratory responses to unilateral exercise may identify bilateral differences. The purpose of this study was to verify whether the cardiorespiratory responses to lower limb exercise display counter-lateral differences, and if ...
Sadeghi Masoumeh M Cardiac Rehabilitation Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, - - 2014
To determine the impacts of cardiac rehabilitation on exercise capacity, quality of life (QOL), and functional status in patients with coronary artery disease (CAD). Self-controlled clinical trial. CAD patients with mild to moderate left ventricular dysfunction participated in an exercise-based rehabilitation program for eight consecutive weeks. Subjects underwent an exercise ...
Kang Jie J 1The College of New Jersey, Ewing, NJ and 2University of Central Florida, Orlando, - - 2014
Exercise routines in which intensity fluctuates, such as Spinning® and Treading®, are gaining in popularity in fitness industry. However, literature on how this dynamic protocol may affect the exercise metabolism is lacking. The present investigation was undertaken to examine the effect of intensity fluctuation and its magnitude on oxygen uptake ...
Brazeau A-S AS Plateforme PROMD, Institut de recherches cliniques de Montreal, Montreal, - - 2014
The aim of this project is to explore the accuracy of 2 activity monitors (SenseWear Armband & Actical) to estimate energy expenditure during rest and light to moderate intensity exercises in 2 ethnic groups. 18 Caucasian and 20 Black adults (age: 26.8±5.2 years; body mass index: 23.9±3.0 kg/m2) wore the 2 ...
Held Heather E HE Center for Research and Education in Special Environments, Department of Physiology and Biophysics, State University of New York at Buffalo, 16 Sherman Annex, Buffalo, NY 14260. Electronic address: - - 2014
Resistance respiratory muscle training (RRMT) increases respiratory muscle strength and can increase swimming endurance time by as much as 85%. The purpose of this study was to examine potential mechanisms by which RRMT improves exercise endurance. Eight healthy adult male scuba divers underwent experiments in a hyperbaric chamber at sea ...
Levels Koen K MOVE Research Institute Amsterdam, Faculty of Human Movement Sciences, VU University Amsterdam, Van der Boechorststraat 9, 1081 BT Amsterdam, The Netherlands; TNO, PO Box 23, 3769 ZG Soesterberg, The Netherlands. Electronic address: - - 2014
This study examined the effect of active pre-warming on speed and quality of performance during simulated firefighting exercise. Twelve male firefighters performed two trials in counterbalanced order. They were either pre-warmed by 20-min cycling at 1.5 Watt kg(-)(1) body mass (WARM) or remained thermoneutral (CON) prior to a simulated firefighting activity. After ...
Peñailillo L L Center for Exercise and Science Research (CESSR), School of Exercise and Health Sciences, Edith Cowan University, Joondalup, WA, Australia; Exercise Science Laboratory, School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, - - 2014
This study tested the hypothesis that rate of force development (RFD) would be a more sensitive indirect marker of muscle damage than maximum voluntary isometric contraction (MVC) peak torque. Ten men performed one concentric cycling and two eccentric cycling (ECC1, ECC2) bouts for 30 min at 60% of maximal concentric power ...
Saynor Zoe Louise ZL 1Children's Health and Exercise Research Centre, Sport and Health Sciences, University of Exeter, Exeter, Devon, United Kingdom; 2Royal Devon and Exeter NHS Foundation Trust Hospital, Exeter, Devon, United - - 2014
To document the matching of muscle O2 delivery-to-O2 utilisation in young cystic fibrosis (CF) patients from muscle deoxygenation (HHb) dynamics during ramp exercise. Ten patients with stable, mild-to-moderate CF (12.7 ± 2.8 y) and 10 healthy controls (CON; 12.8 ± 2.8 y) completed a combined ramp and supramaximal cycling test ...
Romagnoli Marco M Universitary Research Institute "Dr. Viña Giner", Molecular and Mitochondrial Medicine, Catholic University of Valencia "San Vicente Mártir", c/Quevedo 2, 46001, Valencia, - - 2014
In recent years, several systems have been developed to control cardiac function during exercise, and some are also capable of recording RR data to provide heart rate variability (HRV) analyses. In this study we compare time between heart beats and HRV parameters obtained with a smart textile system (GOW; Weartech ...
Ché Fornusek F Exercise Health and Performance Faculty Research Group, University of Sydney , , NSW 1824 Sydney, Australia. che.fornusek@sydney.edu.au, - - 2014
Objective: To investigate the feasibility of neuromuscular electrical stimulation cycling modified to suit persons with advanced multiple sclerosis. Subjects: Eight women with secondary progressive multiple sclerosis. Methods: Subjects participated in an 18-session (40 min) neuromuscular electrical stimulation cycling program. A pedaling cadence of 10 rev•min-1 was employed and stimulation intensity ...
Lee Chia-Lun CL Physical Education Section of General Education, National Sun Yat-sen University, Kaohsiung, Taiwan, - - 2014
To determine the effects of co-ingesting caffeine (CAF) and carbohydrate (CHO) on high-intensity intermittent sprints (HIS) performance and physiological responses. Twelve active males underwent 4 interventions at least 7 days apart in a randomized, double-blind, placebo-controlled, balanced trial. A meal contained 65 % CHO was provided 2 h before the HIS test. Participants ...
Zagatto A M AM Department of Physical Education, Sao Paulo State University- UNESP, Bauru-SP (Brazil). azagatto@fc.unesp.br Faculty of Medicine and Surgery, University of "Tor Vergata" Rome (Italy); Tunisian Research Laboratory "Sports Performance Optimization" National Center of Medicine and Science in Sport, Tunis (Tunisia). sportcinetic@gmail.com Federal University of Mato Grosso do Sul (UFMS), Campo Grande-MS (Brazil). paulo.muller@ufms.br Federal University of Mato Grosso do Sul (UFMS), Campo Grande-MS (Brazil). wemiyagi@hotmail.com Federal University of Mato Grosso do Sul (UFMS), Campo Grande-MS (Brazil). elves_malta@hotmail.com School of Physical Education and Sport of Ribeirão Preto, University of Sao Paulo (USP), Ribeirão Preto, São Paulo-SP (Brazil). - - 2014
The aim of this study was to verify the influence of hyperlactemia and blood acidosis induction on lactate minimum intensity (LMI). Twenty recreationally trained males who were experienced in cycling (fifteen cyclists and five triathletes) participated in this study. The athletes underwent three lactate minimum tests (LMT) on an electromagnetic ...
Hureau Thomas J TJ 1 University of Nice Sophia Antipolis, - - 2014
We hypothesized that exercise performance is adjusted during repeated sprints in order to not surpass a critical threshold of peripheral fatigue. Twelve men randomly performed three experimental sessions on different days: one single 10 s all-out sprint and two trials of 10 × 10 s all-out sprint with 30 s ...
Troy Karen L KL Department of Biomedical Engineering, Worcester Polytechnic Institute , Worcester, MA , USA - - 2014
Abstract Purpose: Because wheelchair users are unable to use standard fitness equipment such as treadmills and bikes, we developed an upper body rowing ergometer (UBRE) that can be retrofitted onto a standard stationary cycle and used to perform a rowing exercise. We validated a graded exercise testing protocol utilizing the ...
Balasekaran G G Nanyang Technological University National Institute of Education Physical Education and Sports Science Human Bioenergetics Laboratory, Singapore - - - 2014
Aim: The Children's OMNI scale of perceived exertion (OMNI Scale) has been validated with children. However, the scale's validity to assess exertional perceptions in obese (OB) adolescents has not been investigated. The aim of this paper was to validate and compare exertional perceptions using the OMNI Scale between OB and ...
Ogasawara Riki R 1The University of - - 2014
Concurrent training, a combination of endurance (EE) and resistance exercise (RE) performed in succession, may compromise the muscle hypertrophic adaptations induced by RE alone. However, little is known about the molecular signaling interactions underlying the changes in skeletal muscle adaptation during concurrent training. Here, we used an animal model to ...
Majerczak J J Department of Muscle Physiology, Chair of Physiology and Biochemistry, Faculty of Rehabilitation, University School of Physical Education, Cracow, Poland. - - 2014
In this study we examined the relationship between fast myosin heavy chain (MyHC2) content in the vastus lateralis and the rate of oxygen uptake (VO2) and heart rate (HR) increase during an incremental exercise in 38, young, healthy men. Prior to the exercise test, muscle biopsies were taken in order ...
Mauger Alexis R - - 2014
Ratings of perceived exertion (RPE) are used to prescribe exercise intensity. This study assessed whether the accurate production of exercise intensity is affected when the rater cannot see the RPE scale. After completing a graded exercise test, 15 active, male participants (M age = 34, SD = 6.7 yr.; M ...
Elmer Steven J SJ Department of Exercise Science and STEM Education, University of Maine, 5740 Lengyel Hall, Orono, ME 04469, USA; Department of Mechanical Engineering, University of Maine, Orono, ME, USA; Eastern Maine Medical Center, Bangor, ME, USA. Electronic address: - - 2014
Facilitating physical activity during the workday may help desk-bound workers reduce risks associated with sedentary behavior. We 1) evaluated the efficacy of a cycling workstation to increase energy expenditure while performing a typing task and 2) fabricated a power measurement system to determine the accuracy and reliability of an exercise ...
Takagi Shun S 1Department of Sports Medicine for Health Promotion, Tokyo Medical University, Tokyo, Japan; 2Department of Electrical and Electronic Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, - - 2014
Reduced peak aerobic capacity in chronic heart failure can be partly explained by impaired peripheral factors. However, skeletal muscle deoxygenation responses during exercise and their relationship to peak aerobic capacity have not been fully established in early post-myocardial infarction (MI) patients. Patients early post-MI (age 61 ± 9, n=16, 21 ...
Rowsell Greg J GJ aSouth Australian Sports Institute, Kidman Park, AUSTRALIA bSport and Exercise Discipline Group, UTS: Health, University of Technology, Sydney, AUSTRALIA cHealth & Human Performance, CQUniversity, Rockhampton - - 2014
The purpose of the study was to investigate the effect of cold-water immersion (CWI) on physiological, psychological, and biochemical markers of recovery and subsequent cycling performance following intensive run training. Seven high-performance male triathletes (age: 28.6±7.1 y; cycling VO2peak: 73.4±10.2 mL·kg·min) completed two trials in a randomized crossover design consisting ...
Lacourpaille Lilian L University of Nantes, Laboratory "Motricité, Interactions, Performance" (EA 4334), Nantes, - - 2014
Changes in muscle stiffness after exercise-induced muscle damage have been classically inferred from passive torque-angle curves. Elastographic techniques can be used to estimate the shear modulus of a localized muscular area. This study aimed to quantify the changes in shear elastic modulus in different regions of the elbow flexors after ...
Lee Chae-Woo CW Department of Rehabilitation Science, Graduate School, Daegu University, Republic of - - 2014
[Purpose] A stationary bicycle exercise and a treadmill exercise were conducted in order to determine the effect of these exercises on the balance and walking ability of elderly women. [Subjects and Methods] Twenty-four elderly women aged 65 or older were equally assigned to a stationary bicycle exercise group and a ...
Fleming Neil N a Department of Kinesiology, Recreation and Sport , Indiana State University , Terre Haute , - - 2014
Abstract This study assessed muscle recruitment patterns and stroke kinematics during ergometer and on-water rowing to validate the accuracy of rowing ergometry. Male rowers (n = 10; age 21 ± 2 years, height 1.90 ± 0.05 m and body mass 83.3 ± 4.8 kg) performed 3 × 3 min exercise ...
Slattery Katie May KM 1Sport & Exercise Discipline Group, Faculty of Health, University of Technology, Sydney, Australia; 2Human Exercise Performance Laboratory, School of Medical Science, University of Adelaide, Australia; 3Applied Sports Science and Exercise Testing Laboratory, School of Environmental and Life Sciences, University of Newcastle, - - 2014
This investigation examined the ergogenic effect of short-term oral N-acetylcysteine (NAC) supplementation and the associated changes in redox balance and inflammation during intense training. A double blind randomised placebo-controlled crossover design was used to assess 9 days of oral NAC supplementation (1200 mg/day) in 10 well-trained triathletes. For each supplement ...
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