Search results for " stiffness"

Ankle-Brachial Index and Cardio-Ankle Vascular Index and their association with cardiorespiratory fitness and leisure-time physical activity in men w…

2017

Nilkka-olkavarsipainesuhteen ja verisuonten jäykkyyden yhteys hengitys- ja verenkiertoelimistön kuntoon sekä vapaa-ajan fyysiseen aktiivisuuteen tyypin 1 diabetesta sairastavilla miehillä. Johdanto. Tyypin 1 diabetesta sairastavilla valtimosairauksien riski on huomattavasti kohonnut verrattuna henkilöihin, joilla ei ole diabetesta. Fyysisen aktiivisuuden on osoitettu olevan yhteydessä matalampaan sydän- ja verisuonisairauksien riskiin, minkä takia fyysisen aktiivisuuden lisääminen voisi auttaa tyypin 1 diabeetikkojen sairastumisriskin hallitsemisessa. Tutkimuksen tarkoitus oli vertailla nilkka-olkavarsipainesuhdetta (ABI) ja valtimoiden jäykkyyttä CAVI-indeksillä mitattuna tyypin 1 diabetes…

Associations of cardiorespiratory fitness, physical activity, and BMI with arterial health in middle‐aged men and women

2020

We investigated the associations of cardiorespiratory fitness (CRF), physical activity (PA) with regard to aerobic and resistance training, and body mass index (BMI) with pulse wave velocity (PWV) and augmentation index (AIx) in middle‐aged adults with at least one cardiovascular risk factor. A total of 84 (46 men and 38 women) participated in the study. Cardiorespiratory fitness was measured using a maximal graded exercise test on a cycle ergometer and was defined as maximal power output (Wmax) normalized for body weight‐0.35. Participation in aerobic and resistance training was assessed by a detailed questionnaire and BMI was calculated as weight (kg)/[height (m2)]. Pulse wave velocity an…

Effects of heating, drying and straining on the relaxation and tensile properties of wet paper

2014

Stiffness Estimation and Adaptive Control for Soft Robots

2022

Nonostante la sorprendente crescita nello sviluppo dei robot ispirati alla natura, tra cui i cosiddetti soft robot, il potenziale di questi sistemi, che hanno intrinseche capacità di adattamento, non è ancora stato sfruttato a pieno. La ricerca ha principalmente considerato il controllo in retroazione della posizione dei giunti del robot, lasciando la gestione della cedevolezza di questi ultimi ancora in anello aperto. Peraltro, le attuali limitazioni nel processo di produzione degli attuatori a cedevolezza variabile e l'inevitabile variabilità nel tempo degli elementi elastici costitutivi, i quali sono soggetti ad usura e deformazione plastica, rendono il problema della determinazione prec…

La sindrome metabolica negli ipertesi essenziali mai trattati farmacologicamente: effetti sulla stiffness aortica

2005

Study and Simulation of Helicopter Gearboxes Noise

2010

International audience; Main gearbox is one of the main noise sources in helicopter cabin. In order to improve the comfort of customers and reduce the health impact, acoustic and vibration mechanisms of gearboxes have to be understood and simulated during development phases. Thus, we first present the global methodology chosen to compute main gearboxes noise in helicopter cabins. Secondly, we described the way we compute mechanical excitation sources induced from gear mesh, static transmission error and meshing stiffness. Depending on the type of gear, we compute those using either analytical specially developed code or EC codes. Thirdly, we propose a modeling to compute dynamic loads on be…

Associations of Sex Hormones and Hormonal Status With Arterial Stiffness in a Female Sample From Reproductive Years to Menopause

2021

ObjectiveLoss of sex hormones has been suggested to underlie menopause-associated increment in cardiovascular risk. We investigated associations of sex hormones with arterial stiffness in 19–58-years-old women. We also studied associations of specific hormonal stages, including natural menstrual cycle, cycle with combined oral contraceptives (COC) and menopausal status with or without hormone therapy (HT), with arterial stiffness.MethodsThis study includes repeated measurements of 65 healthy women representing reproductive (n=16 natural, n=10 COC-users) and menopause (n=5 perimenopausal, n=26 postmenopausal, n=8 HT-users) stages. Arterial stiffness outcomes were aortic pulse wave velocity (…

Acute arterial stiffness, testosterone and force production responses and recovery from different combined strength and endurance loading models

2017

Much of the differences between strength (S) and endurance (E) exercise can be attributed to the contrasting endocrinological and molecular responses between the two exercise modes. From the current literature, it seems that aortic arterial stiffness, a reliable cardiovascular mortality predictor, also responds differently to these two modes of exercise. It is thus important to understand the acute responses that combined exercise loads may invoke, as acute responses are known to drive chronic adaptations. Furthermore, testosterone has been cited as a key hormone in cardiovascular protection and its effects may mediate blood flow and hemodynamics. Currently, there are very few studies inves…

The Effects of Cold Water Immersion on the Recovery of Drop Jump Performance and Mechanics : A Pilot Study in Under-20 Soccer Players

2020

Cold water immersion (CWI) is a popular method used for enhancing recovery from exercise. However, the efficacy of this approach is inconclusive and studies investigating variables contributing to overall performance are scarce. Additionally, few studies have investigated the recovery of stretch-shortening cycle (SSC) performance after a fatiguing SSC task. The SSC occurs naturally in human locomotion and induces a recovery pattern different from isolated muscle contractions (e.g., pure eccentric exercise). Therefore, the main aim of this study was to investigate the effects of a single CWI on jumping performance and mechanics after exhaustive SSC exercise. On a sledge apparatus, 10 male un…