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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 ...
Deutsch Judith E - - 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 ...
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 ...
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 ...
Butler Daniel P - - 2013
Spinning is an increasingly popular form of cycle-based exercise. The workouts are often of high-intensity and participants are intermittently encouraged to achieve a high crank-set-cadence rate. We report a unique case of an open ankle fracture requiring free flap coverage, which highlights the potential perils of spinning class.
Lakin Robert A - - 2013
Aerobic exercise such as running, walking and cycling is known to elicit a post-exercise hypotensive (PEH) response in both trained and untrained subjects. However, it is not known if swim exercise produces a similar effect in normotensive individuals. The complex acute physiological responses to water immersion suggest swimming may affect ...
Vogt Tobias - - 2013
Research has shown that physical exercise enhances cognitive performance in individuals with intact cognition as well as in individuals diagnosed with intellectual and developmental disabilities. Although well identified in the field of health (for example, the transient hypofrontality theory), the underlying neurocognitive processes in intellectual and developmental disabilities remain widely ...
Temesi John - - 2013
Purpose: Sleep deprivation (SD) is characterized by reduced cognitive capabilities and endurance exercise performance and increased perceived exertion (RPE) during exercise. The combined effects of SD and exercise-induced changeson neuromuscular function and cognition are unknown. This study aimed to determine if central fatigue is greater with SD, and if so, ...
Sawyer Brandon J - - 2013
The purpose of this study was to determine whether improvements in endurance exercise performance elicited by strength training were accurately reflected by changes in parameters of the power-duration hyperbola for high-intensity exercise. Before and after 8 weeks of strength training (N=14) or no-exercise control (N=5), 19 males (age 20.6±2.0 years; ...
Brown Melissa J - - 2013
Previous studies indicate that rifle shooting performance while standing is compromised when fatigued. Apprehension of suspects by police officers may involve foot pursuit and firing a weapon from a standing position. The purpose of the present study was to investigate pistol shooting performance in police officers under similar conditions of ...
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 - - 2013
We elucidated the autonomic mechanisms whereby heart rate (HR) is regulated by the muscle metaboreflex. Eight male participants (22±3 yr) performed 3 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 ischemia; PEI) following leg ...
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 ...
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