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Results 201 - 250 of 978
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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 - - 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 a randomized ...
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 ...
Marshallm Paul W M - - 2013
Study Design. Randomized controlled trial.Objective. This is the companion study to a previous publication that presented 8-week pain, disability, and trunk muscle motor control results. The objective of this study was to compare the effect of 8-weeks of specific trunk exercises and stationary cycling on outcomes measures of catastrophizing and ...
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 ...
Pires-Neto Ruy Camargo - - 2013
The objective of this study was to use a cycle ergometer to assess cardiorespiratory changes during active exercise and to verify patients' satisfaction with this type of activity. A single intervention involving active lower limb exercise was performed with a cycle ergometer (without load) for 5 minutes. The following variables ...
Klijn Peter - - 2013
RATIONALE: The optimal exercise training intensity and strategy for individualized exercise training in chronic obstructive pulmonary disease (COPD) is not clear. OBJECTIVE: This study compares the effects of nonlinear periodized exercise training (NLPE) used in athletes to traditional endurance and progressive resistance training (EPR) in patients with severe COPD. METHODS: ...
King Trevor J - - 2013
Endothelial function is essential for vasoprotection and regulation of vascular tone. Using handgrip exercise (HGEX) to increase blood flow-associated shear stress is an increasingly popular method for assessing brachial artery endothelial function via flow-mediated dilation (FMD). However, different exercise duty cycles [ratio of handgrip relaxation: contraction (seconds)] produce different patterns ...
Blanco I - - 2013
Pulmonary hypertension is a serious complication of COPD that currently has no established pharmacological treatment.To assess whether concomitant treatment with sildenafil would enhance the results of pulmonary rehabilitation in patients with COPD and increased pulmonary arterial pressure (PAP).Double-blind, randomised, controlled trial. Patients received 20 mg sildenafil or placebo t.i.d. and ...
Haile Luke - - 2013
Session perceived exertion (S-RPE) and session affective responses (S-AR) are post-exercise estimates of the global responses experienced during exercise. To compare S-RPE and S-AR to acute RPE (A-RPE) and acute AR (A-AR) during self-selected (SS) and imposed (IMP) exercise of the same workload. Thirty-two males (22.3 ± 2.2 years) performed two, 20-min cycle ...
Yu Fang - - 2013
There is a pressing need to establish recruitment, retention, and adherence feasibility to inform clinical trials that will evaluate how exercise affects the symptoms and disease trajectory in Alzheimer's disease (AD). This paper reported the recruitment rate, retention, and adherence from a 6-month cycling study in community-dwelling older adults with ...
Wetten Alexander Allan - - 2013
BACKGROUND: With physical inactivity inextricably linked to the increasing prevalence of obesity, there is a need for validated methods that measure free-living energy expenditure (EE) within sedentary environments. While accelerometers enable these measurements, few studies have compared device accuracy in such settings. Our aim was to investigate the relative validity ...
Muller Matthew D - - 2013
When exposed to a cold environment, a barehanded person experiences pain, cold sensation, and reduced manual dexterity. Both acute (e.g. exercise) and chronic (e.g. cold acclimatization or habituation) processes might lessen these negative effects. The purpose of this experiment was to determine the effect of cold habituation on physiology, perception, ...
Teunissen L P J - - 2013
Physiological and perceptual effects of wind cooling are often intertwined and have scarcely been studied in self-paced exercise. Therefore, we aimed to investigate (1) the independent perceptual effect of wind cooling and its impact on performance and (2) the responses to temporary wind cooling during self-paced exercise. Ten male subjects ...
Maltais François - - 2013
Chronic obstructive pulmonary disease (COPD) reduces patients' exercise capacities and their abilities to perform daily physical activities, thereby increasing morbidity and mortality rates. The cycle of dyspnea, deconditioning, and declining physical activity not only accelerates the progression of COPD but also increases the risk for developing or aggravating metabolic and ...
Yavangi Mahnaz M Department of Obstetrics and Gynecology, Fatemieh Infertility Research Center, Hamadan University of Medical Sciences, Hamadan, - - 2013
 Background: During the month of Ramadan, millions of Muslims abstain from food and drink daily from dawn to sunset and people actually experience repeated cycles of fasting and refeeding. Menstruation is a normal physiological process that its regularity is controlled by hypothalamic-pituitary-ovarian axis. Etiology of menstrual dysfunction includes weight loss, ...
Chidnok Weerapong - - 2013
PURPOSE: We investigated the influence of pacing strategy on the work completed above critical power (CP) prior to exhaustion (W>CP) and the peak V˙o2 attained during high-intensity cycling. METHODS: Following determination of V˙o2max from a ramp incremental cycling test (INC) and estimation of the parameters of the power-duration relationship for ...
Viker Tomas - - 2013
Abstract Research with cyclists suggests a decreased load on the lower limbs by placing the shoe cleat more posteriorly, which may benefit subsequent running in a triathlon. This study investigated the effect of shoe cleat position during cycling on subsequent running. Following bike-run training sessions with both aft and traditional ...
Tan Min Sze - - 2013
Abstract The present study compares the effect of a single bout of sprint interval cycling against continuous cycling on postprandial lipaemia. Participants were nine healthy volunteers (five male), aged 20-26 years. Each participant undertook three 2-d trials in a random order. On day 1, participants rested (control), undertook a single ...
Stathokostas Liza - - 2013
The purpose of this study was to determine the effects of aerobic exercise training on the adjustment of pulmonary oxygen (O2) uptake ([Formula: see text]O2p) kinetics in postmenopausal women in 2 groups: those using hormone replacement therapy (HRT) (HRT group) (n = 7, aged 56 ± 4 years) and those ...
Etxebarria Naroa - - 2013
PURPOSE: To determine how cycling with a variable (triathlon-specific) power distribution affects subsequent running performance, and quantify relationships between an individual cycling power profile and running ability after cycling. METHODS: Twelve well-trained male triathletes (VO2peak 4.9 ± 0.5 L·min-1; mass 73.5 ± 7.7 kg, mean ± SD) undertook a cycle ...
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