Search results for "physical exercise"
showing 10 items of 462 documents
Obesity-associated deficits in inhibitory control are phenocopied to mice through gut microbiota changes in one-carbon and aromatic amino acids metab…
2021
Gut: first published.
Brain BDNF levels are dependent on cerebrovascular endothelium-derived nitric oxide
2016
International audience; Scientific evidence continues to demonstrate a link between endothelial function and cognition. Besides, several studies have identified a complex interplay between nitric oxide (NO) and brain-derived neurotrophic factor (BDNF), a neurotrophin largely involved in cognition. Therefore, this study investigated the link between cerebral endothelium-derived NO and BDNF signaling. For this purpose, levels of BDNF and the phosphorylated form of endothelial NO synthase at serine 1177 (p-eNOS) were simultaneously measured in the cortex and hippocampus of rats subjected to either bilateral common carotid occlusion (n=6), physical exercise (n=6) or a combination of both (n=6) …
HemoKinect: A Microsoft Kinect V2 Based Exergaming Software to Supervise Physical Exercise of Patients with Hemophilia
2018
Patients with hemophilia need to strictly follow exercise routines to minimize their risk of suffering bleeding in joints, known as hemarthrosis. This paper introduces and validates a new exergaming software tool called HemoKinect that intends to keep track of exercises using Microsoft Kinect V2&rsquo
Gender differences in motivation and barriers for the practice of physical exercise in adolescence
2019
A total of 852 adolescents between 12 and 17 years of age were evaluated (M = 14.86, SD = 1.67), randomly selected among a population of secondary school and Baccalaureate students. We applied an &ldquo
Physical and psychological functioning of daily living in relation to physical activity. A longitudinal study among former elite male athletes and co…
2006
Background and aims: Physical exercise plays an important role in the prevention and reduction of disabilities in elderly people. The aim of this study was to determine the role of physical activity in the physical and psychological functioning of daily living in a cohort of former elite male athletes representing different sports, and controls of middle and old age. Methods: Subjects were 664 former elite male athletes (mean age 64.4 years) and 500 controls (62.0 years) in middle and old age. Subjects were mailed “Physical activity and health survey” questionnaires in 1985 and 1995. The primary outcomes — the physical and psychological functioning of daily living — were assessed in 1995 us…
L-Carnitine Supplementation and Physical Exercise Restore Age-Associated Decline in Some Mitochondrial Functions in the Rat
2008
In mammals, during the aging process, an atrophy of the muscle fibers, an increase in body fat mass, and a decrease in skeletal muscle oxidative capacities occur. Compounds and activities that interact with lipid oxidative metabolism may be useful in limiting damages that occur in aging muscle. In this study, we evaluated the effect of L-carnitine and physical exercise on several parameters related to muscle physiology. We described that supplementing old rats with L-carnitine at 30 mg/kg body weight for 12 weeks (a) allowed the restoration of L-carnitine level in muscle cells, (b) restored muscle oxidative activity in the soleus, and (c) induced positive changes in body composition: a decr…
Cardiac adverse effects and acute exercise in elderly subjects
2000
Cardiac arrhythmias, ST segment depressions and other cardiac adverse effects are occasionally seen in relation to physical exercise in elderly people. However, the magnitude, quality, and time-dependence of these events need to be clarified. During voluntary maximal cycle ergometer exercise (CEE), immediate cardiac disturbances as a reason for exercise termination were registered in a sample of 75-year-old men and women (N=203) (population group, PG). Any referrals to hospital following cardiac incidents within 24 hours post-CEE were obtained from patient records. Ambulatory ECG was recorded 24 hours before and after CEE in 23 elderly subjects (12 men, 11 women) capable of maximal effort (…
Physical Activity and the Changes in Maximal Isometric Strength in Men and Women from the Age of 75 to 80 Years
1997
OBJECTIVE: To research the natural changes in maximal isometric strength, over a period of 5 years, in men and women aged 75 at baseline, and to study the effect of everyday physical activity on strength alterations. DESIGN: A 5-year longitudinal study. SETTING: Exercise laboratory PARTICIPANTS: The target group in 1989 was the total 75-year-old population of Jyvaskyla. One hundred one men (81%) and 186 women (75%) participated in baseline strength tests, and after 5 years, 55 men and 111 women (70% and 72% of the survivors) took part in the follow-up measurements. METHODS: Maximal isometric hand grip, arm flexion, knee extension, trunk flexion, and trunk extension forces were measured usin…
Heart Rate Dynamics after Combined Endurance and Strength Training in Older Men
2009
Purpose: Aging alters cardiac autonomic function, which may contribute to a higher risk of cardiac events. Spectral measures of HR variability (HRV) and fractal-like behavior of HR are considered as markers of a healthy heart. The present study examined the effects of combining endurance and strength training compared with endurance or strength training alone on HR dynamics and physical fitness in older previously untrained men aged 40-67 yr. Methods: Subjects were randomized into endurance training (E, n = 23), strength training (S, n = 25), combined endurance and strength training (ES, n = 29), or control group (C, n = 16). Short-term fractal scaling exponent ([alpha]1) and spectral HRV w…
Older persons with signs of frailty in a home-based physical exercise intervention : baseline characteristics of an RCT
2019
Background Increasing the level of physical activity among persons with signs of frailty improves physical functioning. There is a lack of long-term supervised physical exercise intervention studies including a validated definition of frailty. Aims To present baseline characteristics of persons with signs of frailty participating in a randomized long-term home-based physical exercise trial (HIPFRA), and to study associations between the severity of frailty, functional independence and health-related quality-of-life (HRQoL). Methods Three hundred persons, ≥ 65 years old and with signs of frailty (assessed by Fried´s phenotype criteria) were recruited from South Karelia, Finland and randomize…