The purpose of this study was to investigate the physical work capacity of adolescent patients with mild idiopathic scoliosis (less than 60 degrees). Fourteen subjects, who were being treated with a Milwaukee brace, were given a progressive exercise stress test. Ventilatory volume, frequency of breathing, end-tidal PCO2, heart rate, and blood pressure were continuously monitored and oxygen consumption (VO2) was computed for each work load. Results indicated that the majority of subjects were 1 to 4 standard deviations above the mean for nonhandicapped peers in expired ventilation, and all of the subjects were 2 standard deviations or more below the mean for their nonhandicapped peers in VO2max. The low work capacity was similar to that reported in individuals with much larger curves. Reduced work capacity was not apparently limited by maximal attainable ventilation or ventilatory pattern (frequency). Reduced aerobic fitness cannot be ruled out.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Evaluation of the effect of the water-energy nexus on the performance of the water-energy supply system.
Environ Sci Pollut Res Int
January 2025
Department of Civil Engineering, University of Qom, Qom, Iran.
In this study, the water-energy nexus is investigated throughout coupling the Water Evaluation and Planning (WEAP) and Low Emission Analysis Platform (LEAP) models under the climate change effects in the Marun basin, Iran. For this purpose, first, the climate change effects on water resources and consumption nodes are calculated under representative concentration pathway (RCP) scenarios from the fifth report of the International Panel on Climate Change (IPCC). Artificial neural network (ANN) is used to model river inflow and Cropwat model is used for agricultural water demand in future time (2015-2040).
View Article and Find Full Text PDFSkeletal muscle elastic modulus in marathon distance runners.
Eur J Appl Physiol
January 2025
Nike Sport Research Lab, Nike, Inc., One Bowerman Drive, Beaverton, OR, 97005, USA.
Skeletal muscle shear elastic modulus is a non-invasive surrogate for early detection of muscle damage and soreness consequent to unaccustomed eccentric muscle work. We investigated the influence of marathon distance running on skeletal muscle shear elastic modulus. Shear modulus of the rectus femoris was measured via ultrasound shear wave elastography in 80 participants (30 female, 50 male) before and after running a World Marathon Major.
View Article and Find Full Text PDFPerceptual learning of modulation filtered speech.
J Exp Psychol Hum Percept Perform
January 2025
School of Psychology, University of Sussex.
Human listeners have a remarkable capacity to adapt to severe distortions of the speech signal. Previous work indicates that perceptual learning of degraded speech reflects changes to sublexical representations, though the precise format of these representations has not yet been established. Inspired by the neurophysiology of auditory cortex, we hypothesized that perceptual learning involves changes to perceptual representations that are tuned to acoustic modulations of the speech signal.
View Article and Find Full Text PDFEnvironmental Catalysis for NO Reduction by Manipulating the Dynamic Coordination Environment of Active Sites.
Environ Sci Technol
January 2025
Innovation Institute of Carbon Neutrality, International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China.
Nowadays, it is challenging to achieve SO-tolerant environmental catalysis for NO reduction because of the thermodynamically favorable transformation of reactive sites to inactive sulfate species in the presence of SO. Herein, we achieve enhanced low-temperature SO-tolerant NO reduction by manipulating the dynamic coordination environment of active sites. Engineered by coordination chemistry, SiO-CeO composite oxides with a short-range ordered Ce-O-Si structure were elaborately constructed on a TiO support.
View Article and Find Full Text PDFStabilizing Layered Oxide Cathodes Based on Universal Surface Residual Alkali Conversion Chemistry for Rechargeable Secondary Batteries.
Adv Mater
January 2025
College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
Layered transition metal oxides (LTMOs) are attractive cathode candidates for rechargeable secondary batteries because of their high theoretical capacity. Unfortunately, LTMOs suffer from severe capacity attenuation, voltage decay, and sluggish kinetics, resulting from irreversible lattice oxygen evolution and unstable cathode-electrolyte interface. Besides, LTMOs accumulate surface residual alkali species, like hydroxides and carbonates, during synthesis, limiting their practical application.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!