Active clinical trials for "Muscle Weakness"

The use of a pneumatic tourniquet with the purpose of maintaining an operative field free of blood is a common practice in orthopedic surgery. Its use is associated with local and systemic consequences related to hemodynamic and reperfusion ischemia phenomena. Although is known that its use is not an innocuous measure, there is still certain degree blurriness regarding the potential metabolic and functional consequences that may result in the involved limb. In this trial, the investigators are setting out to discriminate the effect of the pneumatic tourniquet on thigh muscle function (strength, tone and activation). The hypothesis is that the pneumatic tourniquet by itself causes a significant postoperative muscular dysfunction of the quadriceps and, thus, the main outcome will be the presence of postoperative quadriceps muscle dysfunction, defined as a fall greater than or equal to 10% of the maximal voluntary isometric contraction measured at 24 hours post surgery.

International, multicenter, observational, longitudinal study to identify biomarker/s for Duchenne Muscular Dystropy (DMD) and to explore the clinical robustness, specificity, and long-term variability of these biomarker/s.

In this longitudinal prospective cohort study including young people with anterior cruciate ligament reconstruction (ACLR), the aims are to 1) study the association between different measures of muscle function and early future of knee osteoarthritis (OA) assessed as patient-reported pain, 2) explore potential associations between muscle function and features indicative of early radiographic OA measured with MRI, and early detection of OA in biomarker profiles, respectively, 3) monitor the patients' functional status, and early OA development over time and 4) investigate the prevalence of early knee OA in individuals 1 and 3 years post ACLR, respectively, compared to non-injured controls.The main hypothesis is that knee extensor weakness predicts future symptomatic OA of the knee (KOOS pain).

The goal of this pilot study is to determine the reliability of myasthenia gravis (MG) specific outcome measures obtained during virtual encounters with patients with myasthenia gravis. The main question it aims to answer is: Are MG-specific outcome measures obtained during virtual encounters reliable? Participants will complete two virtual study visits in which they will be administered common MG-specific outcome measures and a newly developed outcome measure developed specifically for telemedicine assessments of MG patients.

"Several case reports have described the use of rocuronium and sugammadex in patients with myasthenia gravis (MG). However, reports regarding the effects of sugammadex compared with that of acetylcholinesterase inhibitors (AChEIs) on perioperative outcomes of video-assisted thoracoscopic surgery (VATS)-thymectomy in patients with MG are still lacking. Thus, the investigators will investigate the effects of sugammadex compared to AChEIs on the postoperative recovery in patients with MG who underwent VATS-thymectomy. This retrospective study include patients with MG, aged> 18 years who received sugammadex or pyridostigmine-glycopyrrolate or neostigmine-glycopyrrolate after VATS-thymectomy between November 2007 and December 2020. Inverse Probability of Treatment Weighting (IPTW) adjustment will be performed to balance the baseline characteristics between the two groups. The primary outcome is the length of postoperative hospital stay, and the secondary outcomes are the incidence of postoperative mortality and postoperative complications, as well as postoperative extubation and reintubation rates in the operating room after VATS-thymectomy; the outcomes are compared between the two groups. "

To evaluate the effect of pelvic floor muscle strength on women with non-specific low back pain

To assess the incidence of hemi-diaphragmatic paresis following ultrasound-guided erector spinae plane (ESP) block

Tobacco smoke is probably the single most significant source of toxic chemicals that humans are exposed to. Smoking is associated with a variety of pathological conditions such as cardiovascular and pulmonary diseases. In addition to the known harmful effects of cigarette smoking, several epidemiological studies identified tobacco use as a risk factor for sarcopenia, the loss of skeletal muscle mass and strength with advancing age. Previous studies examined skeletal muscles of smokers in comparison with muscles of non-smokers and found structural and metabolic damage in muscles of smokers. Quitting of smoking is known to be associated with weight gain. A previous study examined the effects of smoking cessation on body composition of post-menopausal women using dual-energy x-ray absorptiometry (DEXA). It was found that women who successfully quit smoking for a period of 16 months have significantly increased their body weight, fat mass, muscle mass and functional muscle mass in comparison with non-quitters women. For the first time, it was shown that smoking cessation is associated with an increase of functional muscle mass. Yet, the effects of quitting of smoking on muscle mass and muscle functional capabilities of younger subjects remain unclear. Therefore, we aim to investigate the effects of smoking cessation on muscle mass, muscle function and strength in heavy smoker's subjects. Our findings may shed light on the beneficial effects of smoking cessation regarding the status and function of skeletal muscle in heavy smokers and as a possible strategy to prevent or delay the progression of sarcopenia. Research hypothesis: Smoking cessation among adult heavy smokers will lead to increase in skeletal muscle mass and improvement of muscle function and strength compared with continued smokers.

This study seeks to define the morbidity of critical care polyneuropathy and to confirm that this diagnosis is, in fact, independently associated with increased mortality. Secondary information regarding the reasons for ICU readmission in patients with weakness may help in formulating cogent discharge strategies for these patients. Measurement of weakness using handgrip strength may provide a useful surrogate marker for weakness that may be more easily and uniformly applied. Primary hypothesis: The development of ICU-associated weakness is independently associated with excess attributable mortality. Secondary hypothesis: The development of ICU-associated weakness is associated with an increased need for ICU readmission. Readmission to the ICU will be a result of the development of recurrent respiratory failure or insufficiency Handgrip strength testing will detect ICU-associated weakness with an equivalent sensitivity as the comprehensive bedside muscle strength exam.

When practicing weightlifting regularly the body makes new proteins within the muscle. These new proteins can increase the size of the cells within the muscle to make them larger, a process called hypertrophy. The common convention surrounding gains in skeletal muscle size and strength is that heavy weights are needed. In contrast, lifting lighter weights are thought to be required to induce muscular endurance and not to promote growth. However, it has previously been shown in untrained men that lifting lighter weights results in similar gains in muscle mass and strength as lifting heavier weights. The purpose of this study is to examine how performing resistance training of different intensities (light or heavy weights) affects the degree of muscle growth and strength gain in individuals who are already resistance training. This information will be valuable when designing exercise protocols for increasing muscle size and strength at all ages, or in individuals returning from injury, as a way to stimulate muscle growth and promote strength gains without the need to lift heavy weights.