1,721,048 research outputs found
Sweat measurement device
No full textA sweat measuring device (1 ) comprising a sweat impermeable panel (40) and an adhesive skirt on one side thereof extending about its periphery to enable the panel to be secured to a user's skin is provided. The device covers a known area of a user's skin and traps sweat (42) produced by the skin under the panel. The panel (40) defines a reservoir in which sweat can accumulate and calibrations which may be associated with the reservoir to express the total sweat produced by the user as a function of the volume of sweat in the reservoir. The panel may be relatively stiff; formed by a plastics member and the skirt may extend integrally from the panel or be provided by an adhesive patch which covers the panel
INTERNET OF MEDICAL THINGS (IOMT) AND INTEGRATED HOME ASSISTANCE
No full textThis article furnishes an overview of the actual IoT technology used in integrated home assistance. It delineates how the IoMT devices are improving the implementation of integrated home assistance services, and how the IoT technology can influence the global healthcare assistance in upcoming years aiding healthcare systems by supplying secure and effective cures in a complementary or alternative way, even during periods of crisis or health epidemics, like that of "COVID-19." Healthcare assistance based on IoT and the use of deep machine learning can in fact help healthcare workers by giving them new and improved diagnostic capabilities. The combination of machines and clinical experience improves the reliability of the services of integrated home assistance. Artificial intelligence and deep learning can also optimize disease management, provide large amounts of data, and generate analytics from IoMT devices. Transforming the delivery of integrated home assistance healthcare services in this way, thanks to IoT, is essential for improving self-management for people with chronic illnesses and providing specialized care for people located far away or at home
Satellite cell pool expansion is affected by skeletal muscle characteristics
No full textPlease help populate SUNScholar with the full text of SU research output. Also - should you need this item urgently, please send us the details and we will try to get hold of the full text as quick possible. E-mail to [email protected]. Thank you.Journal Articles (subsidised)NatuurwetenskappeFisiologiese Wetenskapp
Low-Volume Squat Jump Training Improves Functional Performance Independent of Myofibre Changes in Inactive Young Male Individuals
Full text linkAn investigation into the histological changes in skeletal muscle fibres and jump performance indicators after 8 weeks of plyometric squat jump training was conducted. Healthy inactive participants (n = 13; age: 21.5 ± 1.7 year.; height: 173.6 ± 10.7 cm; weight: 68.5 ± 18.4 kg; BMI 22.4 ± 3.8 kg/m(2)) were recruited, where eight participants completed plyometric squat jump training and five control participants refrained from performing any jumping activities. Blood samples, vastus lateralis muscle biopsies and functional testing (peak and average power, peak and average velocity, maximal jump height) were collected/recorded 10 days prior to and 3 days after the training/rest period. Participants completed 1644 squat jumps over an 8-week training period of 24 sessions with a progressive increase in the number of squat jumps. The trained group significantly increased their jumping average and peak power (mean increases in average power: 16.7 ± 1.2% and peak power: 8.2% ± 0.1) and velocity (mean increases in average velocity: 13.7 ± 0.1% and peak velocity: 5.2% ± 0.03), resulting in a 25% improvement in vertical jump height. No muscle morphological changes in terms of the cross-sectional area (CSA) or muscle-fibre-type transition were observed after the plyometric training. Improvements in the functional performance indicators following training may more likely be explained by sarcomere ultrastructural adaptation, which did not directly affect myosin heavy chain or CSA
Current evidence that exercise can increase the number of adult stem cells
No full textThe number of adult stem cells (ASCs) is very small, limiting the regenerative potential of tissues. One of the most studied ASCs in humans is the satellite cell (SC), which proliferates and increases pool size under exercise stress and muscle damage. This review examines the growth factor response to specific types of exercise to show the potential of exercise to stimulate not only SC self-renewal, but also other ASCs. We postulate that the same factors that stimulate a high proliferation of SCs in skeletal muscle after physical exercise should also stimulate the proliferation of ASCs in the tissue in which they reside, such as heart, bone, liver and etc. Regular exercise should be promoted, not only for disease prevention, but to maintain a high ASCs reserve and progenitor cell potential for rapid activation in response to future stressors and damage. © 2012 Springer Science+Business Media B.V
Preferential Type II Muscle Fiber Damage From Plyometric Exercise
Full text linkContext: Plyometric training has been successfully used in different sporting contexts. Studies that investigated the effect of plyometric training on muscle morphology are limited, and results are controversial with regard to which muscle fiber type is mainly affected.
Objective: To analyze the skeletal muscle structural and ultrastructural change induced by an acute bout of plyometric exercise to determine which type of muscle fibers is predominantly damaged.
Design: Descriptive laboratory study.
Setting: Research laboratory.
Patients or Other Participants: Eight healthy, untrained individuals (age 1⁄4 22 6 1 years, height 1⁄4 179.2 6 6.4 cm, weight 1⁄4 78.9 6 5.9 kg).
Intervention(s): Participants completed an acute bout of plyometric exercise (10 sets of 10 squat-jumps with a 1-minute rest between sets).
Main Outcome Measure(s): Blood samples were collected 9 days and immediately before and 6 hours and 1, 2, and 3 days after the acute intervention. Muscle samples were collected 9 days before and 3 days after the exercise intervention. Bloodsamples were analyzed for creatine kinase activity. Muscle biopsies were analyzed for damage using fluorescent and electron transmission microscopy.
Results: Creatine kinase activity peaked 1 day after the exercise bout (529.0 6 317.8 U/L). Immunofluorescence revealed sarcolemmal damage in 155 of 1616 fibers analyzed.
Mainly fast-twitch fibers were damaged. Within subgroups, 7.6% of type I fibers, 10.3% of type IIa fibers, and 14.3% of type IIx fibers were damaged as assessed by losses in dystrophin staining. Similar damage was prevalent in IIx and IIa fibers. Electron microscopy revealed clearly distinguishable moderate and severe sarcomere damage, with damage quantifiably predominant in type II muscle fibers of both the glycolytic and oxidative subtypes (86% and 84%, respectively, versus only 27% of slow-twitch fibers).
Conclusions: We provide direct evidence that a single bout of plyometric exercise affected mainly type II muscle fibers
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