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Results 201 - 250 of 994
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Duncan Michael - - 2013
Abstract The present study examined the effects of differing intensity levels of acute exercise on preadolescent academic ability. In a repeated measures design, 18 preadolescent participants (mean age±S.D.=9.8±1.4 years: 9 male and 9 female) completed the Wide Range Achievement Test (WRAT 4) following 20 minutes of rest, 20-minutes on a ...
Hasnan Nazirah - - 2013
This study compared acute exercise responses during arm cranking, functional electrical stimulation (FES)-assisted leg cycling, and combined arm and leg ("hybrid") cycling in individuals with spinal cord injury during maximal and submaximal exercise. Nine male subjects with long-standing neurological lesions from C7 to T12 were recruited. All subjects performed arm ...
Fontes Eduardo B - - 2013
BACKGROUND/AIM: Currently, the equipment and techniques available to assess brain function during dynamic exercise are limited, which has restricted our knowledge of how the brain regulates exercise. This study assessed the brain areas activated during cycling by making use of a novel cycle ergometer, constructed to measure functional MRI (fMRI) ...
Farjadian Amir B - - 2013
Ankle impairment and lower limb asymmetries in strength and coordination are common symptoms for individuals with selected musculoskeletal and neurological impairments. The virtual reality augmented cycling kit (VRACK) was designed as a compact mechatronics system for lower limb and mobility rehabilitation. The system measures interaction forces and cardiac activity during ...
Sampson John A - - 2013
OBJECTIVES: Mechanical and neuromuscular benefits arise during ballistic stretch-shortening cycle muscle activation, yet resistance training regimens are typically non-ballistic, and in contrast to ballistic movement, require a concentric deceleration phase. DESIGN: Twelve healthy males performed a unilateral, six repetition maximum non-ballistic elbow flexion-extension task during; (i) rapid shortening (RS), (ii) ...
Fisher James P JP School of Sport and Exercise Sciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK. - - 2013
We elucidated the autonomic mechanisms whereby heart rate (HR) is regulated by the muscle metaboreflex. Eight male participants (22 ± 3 years) performed three exercise protocols: (1) enhanced metaboreflex activation with partial flow restriction (bi-lateral thigh cuff inflation) during leg cycling exercise, (2) isolated muscle metaboreflex activation (post-exercise ischaemia; PEI) ...
De Pauw Kevin - - 2013
PURPOSE: To determine the effect of active recovery (AR), passive rest (PR) and cold water immersion (CWI) after 90 min intensive cycling on a subsequent 12 min time-trial (TT2) and the applied pacing strategy in TT2. METHODS: After a max test and familiarization trial, 9 trained male subjects (age: 22 ...
De Pauw Kevin K Dept of Human Physiology and Sports Medicine, Vrije Universiteit Brussel, Brussels, - - 2014
To determine the effect of active recovery (AR), passive rest (PR), and cold-water immersion (CWI) after 90 min of intensive cycling on a subsequent 12-min time trial (TT2) and the applied pacing strategy in TT2. After a maximal test and familiarization trial, 9 trained male subjects (age 22 ± 3 ...
Thijssen Dick H J DH Research Institute for Sport and Exercise Science, Liverpool John Moores University, Tom Reilly Building, Byrom Street, Liverpool L3 3AF, United Kingdom. - - 2013
Exercise training is associated with direct effects on conduit artery function and structure. Cross-sectional studies suggest the presence of systemic changes in wall thickness as a result of exercise in healthy subjects, but no previous study has examined this question in humans undertaking exercise training. To examine the change in ...
Walls Clinton E CE Department of Physiology, College of Medicine, The University of Arizona, Tucson, AZ 85721-0093, - - 2013
The genioglossus (GG) muscle is considered the principal protruder muscle of the tongue that dilates and stiffens the pharyngeal airway. We recorded whole muscle and single motor unit (MU) activities in healthy adults performing progressive intensity exercise on a cycle ergometer. Tungsten microelectrodes were inserted percutaneously into the GG of ...
Little Chris - - 2013
Abstract Inertial sensors may provide the opportunity for broader and more cost effective gait analysis; however some questions remain over their potential use in this capacity. The aim of the study was to determine whether an inertial sensor could discriminate between normal walking, fast walking, and running. A single group ...
Sperlich B - - 2013
The increase in oxygen uptake > 100 ml · min-1 during steady state exercise when elevating the inspired fractional air content (FinO2) from 0.21-1.00 defines the "spirografic oxygen deficit" (SOD). The purpose of this study was 2-fold: 1) determine the SOD at different exercise intensities in healthy participants and 2) ...
Lee J K W - - 2013
There is limited information on the ingestion of cold drinks after exercise. We investigated the thermoregulatory effects of ingesting drinks at 4°C (COLD) or 28°C (WARM) during work-rest cycles in the heat. On 2 separate occasions, 8 healthy males walked on the treadmill for 2 cycles (45 min work; 15 ...
Rønnestad Bent R - - 2013
The aim of the present study was to compare two methods that are frequently used to calculate the power output (MAP) that is associated with peak oxygen uptake (V[Combining Dot Above]O2peak) in the exercise mode of cycling. One method calculates MAP by extrapolation of the individual V[Combining Dot Above]O2 to ...
Correia-Oliveira Carlos Rafaell - - 2013
The relationship between carbohydrate (CHO) availability and exercise performance has been thoroughly discussed. CHO improves performance in both prolonged, low-intensity and short, high-intensity exercises. Most studies have focused on the effects of CHO supplementation on the performance of constant-load, time-to-exhaustion exercises. Nevertheless, in the last 20 years, there has been a ...
Isner-Horobeti Marie-Eve - - 2013
Eccentric (ECC) exercise is classically used to improve muscle strength and power in healthy subjects and athletes. Due to its specific physiological and mechanical properties, there is an increasing interest in employing ECC muscle work for rehabilitation and clinical purposes. Nowadays, ECC muscle actions can be generated using various exercise ...
Naugle Ke - - 2013
Active-video gaming is purported to produce similar cardiovascular responses as aerobic fitness activities. This study compared the emotional and cardiovascular effects of Wii games to traditional exercise in college-aged adults with different exercise backgrounds. Specifically, percent of heart rate reserve (%HRR), rating of perceived exertion (RPE), level of enjoyment, and ...
Ade C J - - 2013
The primary aims of the present study were to evaluate cardiorespiratory responses to incremental head down tilt exercise and to determine if the cardiorespiratory adaptations obtained from endurance training in the head down tilt posture transfer to the upright posture. 22 men (25±3 yrs) performed V˙O2peak cycle exercise tests in ...
Rinnov Anders - - 2013
Regular endurance exercise promotes metabolic and oxidative changes in skeletal muscle. Overexpression of interleukin-15 (IL-15) in mice exerts similar metabolic changes in muscle as seen with endurance exercise. Muscular IL-15 production has been shown to increase in mice after weeks of regular endurance running. With the present study we aimed ...
Verweij Bob G F BG Department of Medicine, Utrecht University, Utrecht, - - 2013
Current exercise prescription guidelines for children recommend at least 60 min of moderate-to-vigorous physical activity every day. However, little is known about the efficacy of different cardiorespiratory exercise modalities prescribed to the pediatric cohort. Sixteen healthy children (8-12 years) completed 5-min trials of treadmill walking, cycling, and elliptical training in ...
Vogel T - - 2013
Aims of the study:  Stiffening of large arteries has been associated with increased cardiovascular outcomes among older subjects. Endurance exercises might attenuate artery stiffness, but little is known about the effects of intermittent training programme. We evaluate the effect of a short Intermittent Work Exercise Training Program (IWEP) on arterial ...
Orr J L - - 2013
This pilot study compared oxygen consumption during arm crank and cycle ergometer tests in 15 women. The mean (SD) peak oxygen consumption was less with arm cranking (25 (5) ml.kg(-1) .min(-1) ) than with cycling (40 (7) ml.kg(-1) .min(-1) ), p < 0.0001. The mean (SD) anaerobic threshold was less with arm ...
Sandfeld Jesper - - 2013
The goal was to investigate the effect of acute moderate hypobaric exposure on the physiological responses to sustained contractions (local) and light to moderate dynamic exercise (systemic) for cabin attendants (CAB) and a matched control group (CON). There were 14 CAB and 13 CON who participated. The experimental protocol was ...
Kido Satoshi S Department of Physical Therapy, School of Health and Social Services, Saitama Prefectural - - 2013
[Purpose] In this study, combined training with breathing resistance and sustained physical exertion was carried out to evaluate its physiological effects and its effect on improve endurance capacity. [Subjects and Methods] The subjects were nine healthy adults (mean age 20.4, SD ± 1.7 years). The combined training group (n = 5) ...
Sandbakk Øyvind - - 2013
PURPOSE: To investigate performance and the associated physiological and biomechanical responses during upper-body repeated sprint work. METHODS: Twelve male ice sledge hockey players from the Norwegian national team performed eight 30-m sprints with start every 30 s and an active recovery between sprints. Time was captured every 10 m by ...
Keramidas Michail E - - 2013
The purpose of this study was to examine whether the forearm-finger skin temperature gradient (Tforearm-finger ), an index of vasomotor tone during resting conditions, can also be used during steady-state exercise. Twelve healthy men performed three cycling trials at an intensity of ~60% of their maximal oxygen uptake for 75 min ...
Lazzer Stefano - - 2013
We hypothesized, in a group of obese women (OB), a more significant impairment of aerobic metabolism during knee extension (KE) exercise vs. that described during cycle ergometer exercise, lending support to the role of skeletal muscles in limiting exercise tolerance in OB. Eleven OB (age 29.5 ± 5.5 years, body mass index 43.2 ± 5.4 kg m(-2)) ...
Kalpana Kommi K Department of Home Science, Sri Venkateswara University, Tirupati, - - 2013
Sugarcane juice (ScJ) is a natural drink popular in most tropical Asian regions. However, research on its effect in enhancing sports performance is limited. The present investigation was to study the effect of sugarcane juice on exercise metabolism and sport performance of athletes in comparison to a commercially available sports ...
Howe Samuel T - - 2013
β-alanine may benefit short duration, high-intensity exercise performance. The aim of this randomised, double-blind, placebo controlled study was to examine the effects of β-alanine supplementation on aspects of muscular performance in highly-trained cyclists. Sixteen highly-trained cyclists (mean±SD; age=24±7yr; mass=70±7kg; VO2max=67±4mL.kg-1·min-1) supplemented with either β-alanine (n=8, 65mg.kg-1BM) or a placebo (n=8, ...
Puype Joke - - 2013
PURPOSE- In this study we compared the effect of sprint interval training (SIT) in normoxia versus hypoxia on muscle glycolytic and oxidative capacity, monocarboxylate transporter (MCT) content, and endurance exercise performance. Methods - Healthy male volunteers (18-30 yrs) performed 6 weeks of SIT on a cycling ergometer (30s sprints vs. ...
Nelson Maximillian J - - 2013
OBJECTIVES: Heart rate kinetics are faster in well-trained athletes at exercise onset, indicating sensitivity to training status, but whether they track performance changes due to changes in training load is unknown. DESIGN: Randomised, counterbalanced, cross-over. METHODS: 17 cyclists completed two weeks of light and two weeks of heavy training. The ...
Rodriguez-Marroyo J A - - 2013
Aim: The aim of this study was to compare the exercise intensity and competition load during Time Trial (TT), Flat (FL), Medium Mountain (MM) and High Mountain (HM) stages based heart rate (HR) and session rating of perceived exertion (RPE). Methods: We monitored both HR and RPE of 12 professional ...
De Pauw Michel - - 2013
The concept of chronotropic incompetence may have to be fine-tuned in an era of proven benefit of heart rate reducing therapy. It is illustrated in three patients with heart failure referred for heart transplantation evaluation. In patients one and two, symptoms of heart failure and exercise capacity improved by reducing ...
Pessoa Bruna V - - 2013
To assess whether there is a correlation between oxygen uptake (VO2) and heart rate (HR) on-kinetics in the constant-load cycle-ergometer test (CLT) and the BODE index and its isolated variables in patients with chronic obstructive pulmonary disease (COPD). Fourteen male patients between 55 and 78 years of age with moderate ...
Chaudhuri Aditi - - 2013
To estimate the prevalence of primary dysmenorrhoea among school girls and to compare the impact of exercise and hot water bottle on the occurrence and severity of primary dysmenorrhoea among the study population. A cross sectional study was done to estimate the prevalence of dysmenorrhoea in two schools of Chandigarh, ...
Bruning Rebecca S RS Noll Laboratory, Department of Kinesiology, The Pennsylvania State University, University Park, PA 16802, - - 2013
Antithrombotic therapy with oral aspirin (ASA) or clopidogrel (CLO) (Plavix; Bristol-Myers Squibb, Bridgewater, NJ) is associated with an attenuated skin vasodilator response and a greater rate of rise in core temperature in healthy, middle-age individuals during passive heating in a water perfused suit. The present double-blind, crossover study examined the ...
Green Howard J - - 2013
This study aimed at investigating the relative roles of the duration versus intensity of exercise on the metabolic adaptations in vastus lateralis to short-term (10 day) aerobic-based cycle training. Healthy males with a peak aerobic power ([Formula: see text]) of 46.0 ± 2.0 ml kg(-1) min(-1) were assigned to either a 30-min (n = 7) or a 60-min ...
Duncan Michael J - - 2013
Caffeine containing energy drinks are commonly consumed in the belief that they will enhance the quality of an exercise session and enhance mood. However, studies examining their efficacy are sparse. The aim of this study was to examine the effect of a caffeinated energy drink on leg pain perception, perceived ...
Wadell Karin - - 2013
Abstract The evaluation of dyspnea and its responsiveness to therapy in COPD should consider the multidimensional nature of this symptom in each of its sensory-perceptual (intensity, quality), affective and impact domains. To gain new insights into mechanisms of dyspnea relief following pulmonary rehabilitation (PR), we examined effects on the major ...
Lee Joshua F - - 2013
Non-vented "aerodynamic-helmets" reduce wind resistance but may increase head (Th) and gastro-intestinal (Tgi) temperature, and reduce performance when worn in hot conditions. This study tested the hypothesis that Th and Tgi would be greater during low intensity cycling in the heat while wearing an aero-helmet (AERO) vs. a traditional vented ...
Lamon Séverine - - 2013
The striated muscle activator of Rho signaling (STARS) protein and members of its downstream signaling pathway, including myocardin-related transcription factor-A (MRTF-A) and SRF, are increased in response to prolonged resistance exercise training but also following a single bout of endurance cycling. The aim of the present study was to measure ...
Stevens Christopher John - - 2013
Abstract This study investigated the effect of ice slurry ingestion during a triathlon on intragastric temperature and 10 km running performance in the heat. Nine well-trained male triathletes performed two randomised trials of a simulated Olympic distance triathlon in hot conditions (32-34°C). Exercise intensity during the swim (1500 m) and cycle (1 ...
Castro Antonio A M - - 2013
INTRODUCTION: Occurrence of dynamic hyperinflation during upper-limbs exercises in chronic obstructive pulmonary disease (COPD) patients it is not well established. We hypothesized that dynamic hyperinflation and thoracoabdominal asynchrony occurs in COPD patients accomplishing arms exercises. We assessed the occurrence and association of dynamic hyperinflation and thoracoabdominal asynchrony in COPD patients ...
Mayo Nancy E - - 2013
Objective:To estimate the relative effectiveness in improving walking ability and other mobility and health outcomes post-stroke of two home-based exercise programmes - stationary cycling and an exercise and walking programme.Design:An observer-blinded, randomized, pragmatic, trial with repeated measures.Setting:Hospital centers in two Canadian cities.Subjects:People within 12 months of acute stroke who were ...
Hvid Lars G - - 2013
AIM: Prolonged muscle activity impairs whole muscle performance and function. However, little is known about the effects of prolonged muscle activity on the contractile function of human single muscle fibres. The purpose of the present study was to investigate the effects of prolonged exercise and subsequent recovery on the contractile ...
Cheng Ching-Feng - - 2013
This study examines the effects of inspiratory muscle warm-up (IMW) on performance and muscle oxygenation during cycling exercise. In a randomized crossover study of 10 female soccer players, the IMW, placebo (IMWP) and control (CON) trials were conducted before two 6-min submaximal cycling exercises (100 and 150W) followed by intermittent ...
Bardis Costas N - - 2013
Hypohydration exceeding 2% of body mass decreases exercise performance. However, the effects of mild hypohydration(<2%) are not clear. Purpose: The aim of this study was to determine the effects of mild hypohydration on cycling performance during a simulated-hill circuit course in a warm environment (32.5±0.5 °C). Methods: Ten trained male ...
Brurok Berit B St Olavs Hospital, Department of Physical Medicine and Rehabilitation, Spinal Cord Injury Unit, 7006 Trondheim, Norway. - - 2013
To compare peak oxygen uptake (VO2peak) between: (i) functional electrical stimulation lower extremity pulsed isometric muscle contractions combined with arm cycling (FES iso hybrid), (ii) functional electrical stimulation cycling combined with arm cycling (FES hybrid cycling), and (iii) arm cycling exercise (ACE) in individuals with spinal cord injury with level ...
Matsuura R - - 2013
The purpose of the present study was to determine the effects of deception for exercise intensity on surface electromyogram (SEMG) activity and blood lactate concentration during intermittent cycling exercise (ICE) tests. Sixteen healthy male were randomly assigned to two groups who completed two ICE [three 4-min cycling at 80% peak ...
Andreacci Joseph L - - 2013
We examined the impact that cycle ergometry exercise had on percent body fat (% BF) estimates when assessed using either leg-to-leg or segmental bioelectrical impedance analysis (LBIA; SBIA) and whether the intensity of the exercise bout impacts the %BF magnitude of change. Seventy-four college-aged adults participated in this study. Participants ...
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