Search results for "Exercise"

Muscle strength before and mortality after a bone fracture in older people

2002

We studied whether muscle strength measured before a bone fracture predicts mortality following the fracture. The participants were a sub-cohort of 82 people of a total of 493 Evergreen project participants initially aged 75- and 80 years, who had participated in knee extension strength tests as part of the baseline examinations, and who subsequently suffered at least one bone fracture. Maximal isometric knee extension strength was measured at baseline using an adjustable dynamometer chair. Fracture surveillance was carried out from patient records for 5 years, and mortality surveillance from population register for 10 years after baseline examinations. Average time till a fracture occurred…

The Stretch-Shortening Cycle

2006

Neuromuscular fatigue has traditionally been examined using isolated forms of either isometric, concentric or eccentric actions. However, none of these actions are naturally occurring in human (or animal) ground locomotion. The basic muscle function is defined as the stretch-shortening cycle (SSC), where the preactivated muscle is first stretched (eccentric action) and then followed by the shortening (concentric) action. As the SSC taxes the skeletal muscles very strongly mechanically, its influence on the reflex activation becomes apparent and very different from the isolated forms of muscle actions mentioned above. The ground contact phases of running, jumping and hopping etc. are example…

Risk of Muscle Damage With Blood Flow-Restricted Exercise Should Not Be Overlooked.

2019

LONGITUDINAL TRACKING OF MUSCULAR POWER CHANGES OF NCAA DIVISION I COLLEGIATE WOMEN GYMNASTS

2004

Gymnastics relies upon power as a critical component of sports-specific fitness. The purpose of this study was to monitor long-term training adaptations in the power of National Collegiate Athletics Association Division I women gymnasts. Twenty members of a women's gymnastic team (aged 18-22) were tracked over 3 years with the first year a baseline year of testing. Whole body power for the counter-movement (CMJ) and squat (SJ) vertical jump was obtained via force plate analyses at 2 assessment time points during each year (February and November). Results showed significant (p < or = 0.05) and continued increases in peak power output in the CMJ and SJ at each biannual assessment. Improvement…

Resistance exercise-induced hormonal response under the influence of delayed onset muscle soreness in men and boys

2010

It was hypothesized that exercise-induced muscle damage (EIMD)-related alterations in hormonal responses could be observed if a second exercise bout is performed soon after an identical unaccustomed bout leading to delayed onset muscle soreness (DOMS). Eight men (31 ± 7 years) and eight boys (14 ± 0 years) performed two exercise bouts (E1 and E2, with 48 h rest in between) consisting of three sets of bilateral knee extensions until exhaustion with 40% load. No differences between the groups or bouts were observed in the number of repetitions performed and maximal isometric force decline, or between groups in serum creatine kinase activity and DOMS. Decreased peak epinephrine (EPI) (-38%), g…

Physical activity compensates for increased mortality risk among older people with poor muscle strength

2006

The aim of the study was to determine whether habitual physical activity can compensate for the increased mortality risk among older people with poor muscle strength. Mortality was followed up for 10 years after laboratory examination in 558 community dwelling 75- and 80-year-old men and women. Maximal isometric strength of five muscle groups was measured and tertile cut-off points were used to categorize participants. Participants, who reported moderate physical activity for at least 4 h a week, were categorized as physically active and the others as sedentary. High muscle strength and physical activity both protected from mortality, but their effect was not additive. Within each muscle st…

Benefits of exercise therapy for chronic diseases.

2005

Evidence on the benefits of exercise therapy for chronic diseases based on randomised controlled trials is accumulating

P640Sex differences in cardiovascular and all-cause mortality in middle-aged and older participants of a medically-supervised exercise program

2019

Abstract Background Physical inactivity has been shown to be associated with all-cause mortality in both healthy and unhealthy middle-aged and older individuals. While regular exercise is equally recommended for men and women, it is virtually unknown if sex influences the long-term survival among participants of a medically-supervised exercise program (MSEP). Purpose To evaluate if cardiovascular and all-cause mortality differs between men and women who participates in a MSEP. Methods Retrospective data from an open cohort of individuals aged 36 to 85 years old (66% men) who participated in a private MSEP between March 1994 and December 2018 were analyzed. The participants were free to atte…

Hemofilia: ejercicio y deporte

2011

El ejercicio físico y el deporte constituyen uno de los pilares básicos en el tratamiento de la hemofilia. Este trabajo describe un resumen de las características de la hemofilia y, a través de una exhaustiva revisión bibliográfica, se analiza la importancia de la condición física, en relación con la prevención y el tratamiento de las lesiones musculoesqueléticas en el paciente hemofílico. La hemofilia es una enfermedad hematológica hereditaria, con lesiones ortopédicas características. Afecta a individuos varones y presenta un déficit de factores de la coagulación que provoca hemorragias incluso espontáneas (en pacientes graves sin tratamiento). Las lesiones más frecuentes son: hemartrosis…

Hiatal herniation of the stomach and pancreas in a patient with oxygen desaturations

2013

Hiatal hernia (HH), a neglected cause of cardiorespiratory symptoms, is a frequent entity characterized by the displacement of the gastro- esophageal junction and part of the stomach into the mediastinum. Although often asymptomatic, HH may also exert a wide spectrum of clinical presentations due to cardio-pulmonary compression, including acute cardiovascular events such as arrhythmias, post-prandial syncope, angina-like chest pain, recurrent acute heart failure, hemodynamic collapse, electrocardiographic changes (T-wave inversion, ST elevation) simulating myocardial ischemia or pericarditis, and respiratory manifestations that can range from exercise intolerance and dyspnea on exertion to …