A5105405525- Chronic Obstructive Pulmonary Disease (COPD) Research
- Cardiovascular and exercise physiology
- High Altitude and Hypoxia
- Pulmonary Hypertension Research and Treatments
- Respiratory Support and Mechanisms
- Cardiovascular Function and Risk Factors
- Neuroscience of respiration and sleep
- Heart Rate Variability and Autonomic Control
- Global Financial Crisis and Policies
- Cardiovascular Effects of Exercise
- Physical Activity and Health
- Cardiac Health and Mental Health
- COVID-19 and Mental Health
- Sports Performance and Training
- Asthma and respiratory diseases
- Stroke Rehabilitation and Recovery
- Obstructive Sleep Apnea Research
- Exercise and Physiological Responses
- Monetary Policy and Economic Impact
- Muscle activation and electromyography studies
- Cardiovascular and Diving-Related Complications
- Long-Term Effects of COVID-19
- Spinal Cord Injury Research
- Voice and Speech Disorders
- Cerebral Palsy and Movement Disorders
Jacksonville College
2020-2024
University of Leeds
2016-2024
Mayo Clinic in Florida
2020-2024
WinnMed
2013-2024
Mayo Clinic in Arizona
2011-2023
Northern Arizona University
2023
Mayo Clinic Hospital
2021
Financial Research (Hungary)
2021
University of Exeter
2015-2020
American College of Surgeons
2018
High-intensity exercise (≥90% of maximal O 2 uptake) sustained to the limit tolerance elicits expiratory muscle fatigue (EMF). We asked whether prior EMF affects subsequent tolerance. Eight male subjects (means ± SD; uptake = 53.5 5.2 ml·kg −1 ·min ) cycled at 90% peak power output with (EMF-EX) and without (CON-EX) induction for a time equal that achieved in EMF-EX but (ISO-EX). To induce EMF, breathed against an flow resistor until task failure (15 breaths/min, 0.7 duty cycle, 40% gastric...
We asked whether specific inspiratory muscle training (IMT) improves respiratory structure and function peak exercise responses in highly trained athletes with cervical spinal cord injury (SCI). Ten Paralympic wheelchair rugby players motor-complete SCI (C5-C7) were paired by functional classification then randomly assigned to an IMT or placebo group. Diaphragm thickness (B-mode ultrasonography), [spirometry maximum static (PI ,max ) expiratory (PE pressures], chronic activity-related...
Ecologists are sometimes faced with the need to analyse polymodal frequency distributions into their component curves. The methods now available for these analyses directed towards obtaining one or more of Gaussian parameters; mean (x), standard deviation (a) and population size distribution area (n). all subject limitations because inherent difficulty problem (Pearson 1894, 1930), most techniques require large values n in order obtain smooth Most also trial error calculations about various
The abdominal muscles have been shown to fatigue in response voluntary isocapnic hyperpnea using direct nerve stimulation techniques. We investigated whether the dynamic lower limb exercise such Eleven male subjects [peak oxygen uptake (V̇o 2 peak ) = 50.0 ± 1.9 (SE) ml·kg −1 ·min ] cycled at >90% V̇o exhaustion (14.2 4.2 min). Abdominal muscle function was assessed before and up 30 min after by measuring changes gastric pressure (Pga) roots supplying were magnetically stimulated 1–25 Hz....
Aging is associated with deterioration in the structure and function of pulmonary circulation. We characterized lung diffusing capacity for carbon monoxide (DL CO ), alveolar-capillary membrane conductance (Dm pulmonary-capillary blood volume (Vc) response to discontinuous incremental exercise at 25, 50, 75, 90% peak work (W ) four groups: 1) Young [27 ± 3 yr, maximal oxygen consumption (V̇o 2max ): 110 18% age predicted]; 2) Highly Fit (27 V̇o : 147 8% predicted); 3) Old (69 5 116 13% 4)...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTerpenoids. XI.1 Investigation of Nine Cactus Species. Isolation Two New Triterpenes, Stellatogenin and Machaeric Acid2Carl Djerassi, L. H. Liu, E. Farkas, A. Lippman, J. Lemin, Geller, R. N. McDonald, B. TaylorCite this: Am. Chem. Soc. 1955, 77, 5, 1200–1203Publication Date (Print):March 1, 1955Publication History Published online1 May 2002Published inissue 1 March...
Despite a growing body of literature on the physiological responses to ultramarathon, there is paucity data in females. This study assessed female response ultramarathon and compared frequency perturbations group race- time-matched males.Data were collected from 53 contestants an trail race at Ultra-Trail du Mont-Blanc (UTMB®) 2018/19. Before within 2 h finish, participants underwent assessments, including blood sampling for biomarkers (creatine kinase-MB isoenzyme [CK-MB], cardiac troponin...
Cervical spinal cord injury (CSCI) results in a decrease the capacity of lungs and chest wall for pressure, volume, airflow generation. We asked whether such impairments might increase potential exercise-induced diaphragmatic fatigue mechanical ventilatory constraint this population. Seven Paralympic wheelchair rugby players (mean + or - SD peak oxygen uptake = 16.9 4.9 ml x kg(-1) min(-1)) with traumatic CSCI (C(5)-C(7)) performed arm-crank exercise to limit tolerance at 90% their...
We determined whether a non-invasive gas exchange based estimate of pulmonary vascular (PV) capacitance [PV CAP = stroke volume (SV) x arterial pressure (Ppa)] (GX ) tracked the PV response to exercise in heart-failure (HF) patients. Pulmonary wedge (Ppw), Ppa, resistance (PVR), and were measured simultaneously during cycle 42 HF patients undergoing right-heart catheterization. During exercise, P ET CO 2 V E /VCO related each other ( r= -0.93, < 0.01) similarly mean Ppa (mPpa) r -0.39...