Search Results
Results 151 - 200 of 1000
1 2 3 4 5 6 7 8 9 10 >
Stocchero Cintia Mussi Alvim CM a Federal Institute of Education, Science and Technology of Rio Grande do Sul, Porto Alegre RS, - - 2014
The objective of this study was to investigate the effect of running versus cycling exercises upon serum S100B levels and typical markers of skeletal muscle damage such as creatine kinase (CK), aspartate aminotransferase (AST) and myoglobin (Mb). Although recent work demonstrates that S100B is highly expressed and exerts functional properties ...
Titze Sylvia - - 2013
To provide population estimates and explore trends for recreational cycling by subgroups, and to understand the contribution of recreational cycling to meeting the physical activity guidelines among Australian adults. Repeated cross sectional population surveys. Data from the Exercise, Recreational and Sport Survey (ERASS) for the years 2001-2009 were used. Approximately ...
Oser Sean M - - 2013
Exercise is universally recognized as a key feature for maintaining good health. Likewise, lack of physical activity is a major risk factor for chronic disease and disability, an especially important fact considering our rapidly aging population. Biking and running are frequently recommended as forms of exercise. As more individuals participate ...
Kraemer R R - - 2013
Irisin, a newly discovered, PGC-1α dependent myokine, has recently been shown to increase in circulation in response to sprint exercise. This study examined the effect of prolonged exercise on irisin concentrations in young men (n=7) as well as in young women (n=5) during different stages of the menstrual cycle. Seven ...
Wall Bradley A - - 2013
Laboratory studies that support the hydration guidelines of leading governing bodies have shown that dehydration to only -2% of body mass can lead to increase in body temperature and heart rate during exercise, and decrease in performance. These studies, however, have been conducted in relatively windless environments (ie, wind speed ...
Mauger Alexis R - - 2013
Acetaminophen (paracetamol) is a commonly used over-the-counter analgesic and antipyretic and has previously been shown to improve exercise performance through a reduction in perceived pain. This study sought to establish whether its antipyretic action may also improve exercise capacity in the heat by moderating the increase in core temperature. On ...
Rocha Joel - - 2013
This study examined the effects of an acute bout of low-intensity cycling on food intake and energy expenditure over four days. Thirty healthy, active (n=15) and inactive (n=15) men completed two conditions (exercise and control), in a randomised crossover fashion. The exercise experimental day involved cycling for one hour at ...
Dekerle Jeanne - - 2013
The critical power concept has been applied to constant-load exhaustive exercise and recently validated for 3-min all-out exercise. The present study tests the application of critical power to 3-min all-out isokinetic cycling exercise. Two pedalling frequencies were tested. Nine participants performed a 3-min all-out isokinetic test and 4-5 constant-load exhaustive ...
Siedlik J A - - 2013
The purpose of this study was to determine the agreement of physiological parameters measured during exercise testing on two devices at established power outputs (PO). Ten trained male cyclists were recruited. The devices used for comparison were the Lode stationary bicycle ergometer (SBE) (Lode Excalibur, Netherlands) and the PowerTap Pro+ ...
Johnson Michael A - - 2013
This study examined whether metabolite accumulation, induced by prior upper body exercise, affected the power-duration relationship for leg cycle ergometry. Seven males performed, to the limit of tolerance and both without (L) and with (AL) prior severe-intensity arm-cranking exercise, an incremental cycling test and four constant power cycling tests to ...
Bergstrom Haley C - - 2013
This study examined the relationships among the physical working capacity at the fatigue threshold (PWCFT), the power outputs associated with the gas exchange threshold (PGET) and the respiratory compensation point (PRCP), and critical power (CP) to identify possible physiological mechanisms underlying the onset of neuromuscular fatigue. Ten participants (mean ± ...
Etxebarria Naroa - - 2013
Abstract Triathlon running is affected by prior cycling and power output during triathlon cycling is variable in nature. We compared constant and triathlon-specific variable power cycling and their effect on subsequent submaximal running physiology. Nine well-trained male triathletes (age 24.6 ± 4.6 years, [Formula: see text] 4.5 ± 0.4 L · min(-1); mean ± SD) performed ...
Baldi Bruno Guedes - - 2013
Positive responses to bronchodilators (BDs) on spirometry can be found in up to 30% of patients with lymphangioleiomyomatosis (LAM). However, no previous studies have investigated the impact of BDs on exercise outcomes, including dynamic hyperinflation (DH). A randomised, double-blind, placebo-controlled, crossover trial was conducted on 38 patients with LAM, comparing ...
Ramos-Jiménez A - - 2013
Introduction: Oral rehydration drinks help maintain physical capacity and hydration during exercise. Objective: Evaluate, in a case and self-control study, the effectiveness of three hydration and exercise protocols on work capacity and physical and psychosomatic stress during indoor cycling (InC). Methods: 14 middle-aged eutrophic men participated in three controlled randomly ...
Shakeri Hassan H Doctor, Assistant Professor, University of Social Welfare and Rehabilitation Sciences, Tehran, - - 2013
The purpose of this preliminary study was to investigate the effect of functional lumbar stabilization exercises on pain, disability, and kinesiophobia in women with menstrual low back pain (LBP). Thirty women with menstrual LBP participated in the study. Subjects were assigned to a control group (n = 10, mean age = 25.1 ± 4.7 years) and ...
Deutsch Judith E JE Research in Virtual Environments and Rehabilitation Sciences Laboratory, Rutgers University, Camden, NJ, USA. - - 2013
A virtual reality (VR) augmented cycling kit (VRACK) was developed to address motor control and fitness deficits of individuals with chronic stroke. In this article, we report on the safety, feasibility, and efficacy of using the VR augmented cycling kit to improve cardiorespiratory (CR) fitness of individuals in the chronic ...
Naugle Kelly M - - 2013
Despite many studies investigating exercise-induced hypoalgesia, there is limited understanding of the optimal intensity of aerobic exercise in producing hypoalgesic effects across different types of pain stimuli. Given that not all individuals are willing or capable of engaging in high intensity aerobic exercise, whether moderate intensity aerobic exercise is associated ...
De Pauw Kevin K Department of Human Physiology, Faculty of Physical Education and Physical Therapy, Vrije Universiteit Brussel, Brussels, - - 2013
The aim of this study was to determine the effect of prolonged intensive cycling and postexercise recovery in the heat on brain sources of altered brain oscillations. After a max test and familiarization trial, nine trained male subjects (23 ± 3 yr; maximal oxygen uptake = 62.1 ± 5.3 ml·min(-1)·kg(-1)) ...
Murias Juan M - - 2013
Sex-specific differences in the temporal profiles of fractional O2 extraction during incremental cycling were examined using changes in near-infrared spectroscopy (NIRS)-derived muscle deoxygenated hemoglobin concentration (Δ[HHb]) and breath-by-breath pulmonary O2 uptake ( [Formula: see text] ) measurements. Subject's (men: n=10; women: n=10) Δ[HHb] data were normalized to 100% of the ...
Doering Thomas M - - 2013
The purpose of this study was to investigate if acute caffeine exposure via mouth-rinse improved endurance cycling time-trial performance in well-trained cyclists. It was hypothesised that caffeine exposure at the mouth would enhance endurance cycling time-trial performance. Ten well-trained male cyclists (mean±SD: 32.9±7.5 years, 74.7±5.3kg, 176.8±5.1cm, VO2peak=59.8±3.5mL.kg-1.min-1) completed two experimental ...
Åsan Grasaas Christina - - 2013
This study investigated changes in technique and efficiency after high-intensity exercise to exhaustion in elite cross-country skiers. Twelve elite male skiers completed 4-minute submaximal exercise pre and post a high-intensity incremental test to exhaustion in the G3 skating technique on a 5% inclined roller ski treadmill. Kinematics and kinetics were ...
Faulkner Steve H - - 2013
Having previously shown the use of passive external heating between warm-up completion and sprint cycling to have had a positive effect on muscle temperature (T m) and maximal sprint performance, we sought to determine whether adding passive heating during active warm up was of further benefit. Ten trained male cyclists ...
Hyland Gail - - 2013
This study investigated women's experiences of doing prescribed pelvic floor muscle exercise (PFME) after participation in the Pelvic Organ Prolapse Physiotherapy (POPPY) trial. The aim was to understand post-supervised treatment adherence to PFME and to inform future advice for women being treated for pelvic organ prolapse (POP). Five women were ...
Bardis Costas N CN Department of Nutrition and Dietetics, Harokopio University, Athens, - - 2013
Hydration has been shown to be an important factor in performance; however, the effects of mild dehydration during intense cycling are not clear. To determine the influence of mild dehydration on cycling performance during an outdoor climbing trial in the heat (ambient temperature = 29.0°C ± 2.2°C). Crossover study. Outdoor. ...
Gravier G - - 2013
Previous observations having reported a transient hypoxia at the onset of incremental exercise, we investigated the existence of concomitant ventilatory and heart rate (HR) breakpoints.33 subjects executed a maximal cycling exercise with averaging for successive 5-s periods of HR, ventilation, tidal volume (VT), mean inspiratory flow rate (VT/Ti), and end-tidal ...
Chuang Ming-Lung - - 2013
The patterns and kinetics of changes in oxyhemoglobin saturation measured with pulse oximetry (ΔSpO2) in six-minute walking test (6MWT) and cycling test has not been addressed in patients with chronic obstructive pulmonary disease (COPD). Sixty COPD patients with FEV1 54±18%pred were evaluated for anthropometrics, oxygen-cost diagram (OCD) score, lung function ...
Sun Feng-Hua - - 2013
Abstract Purpose: To investigate the effect of the glycemic index (GI) of pre-exercise snack bars on substrate utilization during subsequent moderate intensity exercise. Methods: Fourteen male participants (Age: 27 ± 5 yr; BMI: 22.5 ± 2.7 kg m(-2); [Formula: see text]: 48.7 ± 6.1 mL kg(-1 )min(-1)) completed two trials in a randomized and counterbalanced crossover design. Two iso-caloric snack bars with ...
Duffin James - - 2013
This paper presents a personal view of research into the exercise drive to breathe that can be observed to act immediately to increase breathing at the start of rhythmic exercise. It is based on a talk given at the Experimental Biology 2013 meeting in a session entitled "Recent advances in ...
Salbach Nancy M - - 2013
and objectives. The 6-minute walk test (6MWT) is used to measure exercise capacity after stroke. We sought to compare cardiorespiratory responses during the 6MWT with responses to a ramp cycle ergometer test (CET) in community-dwelling individuals with stroke. A secondary objective was to determine the relationship between cardiorespiratory responses during ...
Joyce Jennifer - - 2013
This study aimed to investigate the influence of an acute bout of moderate exercise and examine the potential lasting improvements over time in young and old adults within the same experimental paradigm over a 2 hour testing period. The study was designed to assess the efficiency of selective control and ...
Lester Bridget E - - 2013
Studies of real and simulated microgravity exposure show the lower limb muscles atrophy to the greatest extent, with the calf muscles being most affected and most difficult to target with exercise countermeasures. This ground-based study examined the metabolic involvement of the thigh and calf muscles during two cycle exercise protocols ...
Fan Jui-Lin JL Institute of Sports Sciences, Faculty of Biology and Medicine, University of Lausanne Lausanne, Switzerland ; Lemanic Doctoral School of Neuroscience, University of Lausanne Lausanne, - - 2013
During heavy exercise, hyperventilation-induced hypocapnia leads to cerebral vasoconstriction, resulting in a reduction in cerebral blood flow (CBF). A reduction in CBF would impair cerebral O2 delivery and potentially account for reduced exercise performance in hypoxia. We tested the hypothesis that end-tidal Pco2 (PETCO2) clamping in hypoxic exercise would prevent ...
Simões Rodrigo Polaquini - - 2013
The purposes of this study were to determine anaerobic threshold (AT) during discontinuous dynamic and resistive exercise protocols by analysing of heart rate variability (HRV) and blood lactate (BL) in healthy elderly subjects and compare the cardiovascular, metabolic and autonomic variables obtained from these two forms of exercise. Fourteen elderly ...
Levin Gregory T - - 2013
Purpose: We aimed to assess the reliability of a 5 minute stage graded exercise test (GXT) and determine the association between physiological attributes and performance over stochastic cycling trials of varying distance. Methods: Twenty-eight well trained male cyclists performed two GXT's and either a 30km (n=17) or 100km stochastic cycling ...
Flanagan Shawn D - - 2013
New Technology offers potential advantages in physically demanding environments where convenience and comfort are important and accurate and reliable data collection is challenging. Nevertheless, it is important to validate the accuracy and reliability of such biological monitoring systems (BMS) before they are adopted. The purpose of the present investigation was ...
Kjeld Thomas - - 2013
Ischemic preconditioning enhances ergometer cycling and swimming performance. We evaluated whether ischemic preconditioning of one forearm (4 times 5 min) also affects static breath-hold and underwater swimming, while the effect of similar preconditioning on ergometer rowing served as control since the warm-up for rowing regularly encompasses intense exercise and therefore ...
Voet Nicoline Bm - - 2013
Strength training or aerobic exercise programmes might optimise muscle and cardiorespiratory function and prevent additional disuse atrophy and deconditioning in people with a muscle disease. This is an update of a review first published in 2004. To examine the safety and efficacy of strength training and aerobic exercise training in ...
Barbosa Luis Fabiano - - 2013
The purpose of this study was to determine the test-retest reliability of cardiorespiratory parameters during cycling exercise performed at severe domain in active individuals. Thirteen active males (24.5±4.5 yr) performed the following tests: 1) an incremental test to determine VO2max and the intensity associated with VO2max (IVO2max); and 2) 4 ...
Gravier Gilles - - 2013
Interindividual differences in the rate of changes in tidal volume (VT) and respiratory frequency (fR) were examined during a maximal incremental cycling exercise. The gain of the inspiratory off-switch reflex was inferred from the VT vs. inspiratory duration (Ti) relationship. Some subjects also executed a static handgrip exercise, used as ...
Heesch Matthew William Sinclair MW School of Health, Physical Education, and Recreation, University of Nebraska at Omaha, Omaha, NE 68182, - - 2014
The purpose of this study was to determine how the timing of isoenergetic carbohydrate feedings during prolonged cycling affects performance in a subsequent 10-km cycling time trial. Recreationally trained male cyclists (n = 8; age, 34.5 ± 8.3 years; mass, 80.0 ± 6.3 kg; body fat, 16.0% ± 3.8%, peak ...
Sañudo Borja - - 2013
This study aimed to determine the effects of vibration on leg blood flow after intense exercise and find out whether or not these effects can influence subsequent maximal exercise performance. Twenty-three participants performed an exercise test-to-exhaustion followed by a recovery period using six-1-min sets of whole-body vibration (WBV; 25 Hz-4 ...
Baig Dur-E-Zehra - - 2013
The aim of this paper is to develop the self biofeedback (SBF) control of oxygen consumption (Vo2) during cycling exercise. The developed system uses an estimator that can predict Vo2 in real time by using the measurements of heart rate (HR), respiratory rate (RespR) and frequency of exercising activity, this ...
Finkelstein Joseph - - 2013
Limited research has been conducted in utilizing telemedicine to promote upper and lower limb rehabilitation using remotely controlled home-based ergometers. The goal of this study was to develop and assess a telerehabilitation system supporting internet-controlled home-based cycling exercise. We designed an interface to control cycling speed of an ergometer from ...
Fiorentini Alessandra A U.O.C Geriatria e Medicina, COB, Viterbo, - - 2013
Background: Meditation in its various forms is a traditional exercise with a potential benefit on well-being and health. On a psychosomatic level these exercises seem to improve the salutogenetic potential in man.Especially the cardiorespiratory interaction seems to play an important role since most meditation techniques make use of special low ...
Marshall Paul W M PW School of Science and Health, University of Western Sydney, Penrith South, NSW 2751, Australia. - - 2013
Randomized controlled trial. 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 fear-avoidance ...
O'Leary C B - - 2013
To examine the androgen response to exercise in women under conditions of high (H) and low (L) estrogen (E2) levels. Ten exercise trained eumenorrheic women (mean ± SD: 20.0 ± 2.2 years, 58.7 ± 8.3 kg, 22.3 ± 4.9 % body fat, VO2max = 50.7 ± 9.0 mL/kg/min) completed a 60 min treadmill run at ~70 % of VO2max during both the mid-follicular (L-E2, 69.7 ± 7.3 % VO2max) and mid-luteal ...
Lluch Enrique - - 2013
This study compared the immediate effects of an assisted plus active cranio-cervical flexion exercise (exercise group) versus a passive mobilisation plus assisted cranio-cervical flexion (mobilisation group) on performance of the cranio-cervical flexion test (CCFT), cervical range of motion (ROM) and pain in patients with chronic neck pain. Eighteen volunteers with ...
Chen C-C Jj - - 2013
BACKGROUND: This study was aimed at investigating the impact of assisted cycling therapy (ACT) on fine manual dexterity in adults with Down's syndrome (DS). METHODS: Nine persons with DS completed four different interventions: voluntary exercise (VE), voluntary with music (VEM), assisted exercise (AE) and no exercise (NE). Fine manual dexterity ...
Thrasher Timothy Adam - - 2013
To describe adaptations in power output, quadriceps muscle strength, and fatigability that occur during a 13-week regimen of Functional Electrical Stimulation Leg Cycle Ergometry (FES-LCE) in Spinal Cord Injury (SCI). To identify differences in outcomes between individuals with complete and incomplete motor impairment. Observational and longitudinal. Rehabilitation and biomechanics research ...
Guelfi Kym J - - 2013
The effect of exercise on appetite and appetite-related hormones during pregnancy is not known. This study found that 30 min of moderate-intensity stationary cycling transiently attenuated hunger and increased fullness in late gestational women (n = 12). Exercise did not affect perceived appetite or appetite-related hormones in response to subsequent ...
1 2 3 4 5 6 7 8 9 10 >