Active clinical trials for "Fatigue"

The purpose of this study is to determine the optimal time interval between light emitting diode application and exercise to improve fatigue resistance.The results of this study could be useful in planning a rehabilitation program in musculature disorders and also in athletic training.

The mechanisms contributing to muscle fatigue in extreme long-duration exercise bouts are poorly understood. Ultra-endurance exercise is an excellent model for the study of adaptive responses to extreme loads and stress and it is an especially useful model for documenting the origins of central fatigue. This protocol will compare fatigue during and after ultra-endurance exercise bouts that result in moderate lower-limb tissue damage (i.e. cycling) or significant damage (i.e. running). The results of this protocol will allow us to further understanding of the reasons for major central fatigue, i.e. within the central nervous system, in ultra-endurance.

The aim of this study is to understand the relationship between perceived effort and physiological and kinematic variables caused by isometric activity of the upper limbs, as well as its relationship with socio-demographic characteristics, level of activity and quality of life.

RATIONALE: Radiation therapy uses high-energy x rays to kill tumor cells. Radiation therapy may cause skin reactions when patients are exposed to high-energy x rays. Studying the genetic pattern of patients before and after radiation therapy may help doctors prevent toxicity and plan the best treatment. PURPOSE: This clinical trial studies genetic susceptibility to radiation-induced skin reactions in racial/ethnic groups of patients with breast cancer.

The purpose of this study is to establish validated outcome measures for Postoperative Fatigue and Postoperative nausea, and to compare clinical impact of postanaesthetic symptoms during first week after Propofol or Desflurane based anaesthesia.

Based on the investigators clinical experience in patients with chronic disease (Hui, Hui, and Johnston, 2006; Hays et al 2005), a review of the literature (Johnston, Xiao and Hui 2007), and inspired by Vickers and colleagues (PMID: 15117996), the investigators carry out a pilot study that investigates if acupuncture combined with patient education will relieve fatigue in patients who have completed primary treatment for breast cancer.

Participants will be diagnosed with localized prostate or breast cancer and be scheduled to undergo external beam radiation therapy. Participants will either receive a placebo or organic germanium to be taken 5 times a day starting the day of their first radiation and continuing through the 1 month follow-up visit. Weekly Quality of life forms will be completed through the one month follow up visit and then at the 3 month follow up visit. Labs will be done prior to the start of treatment, at the end of treatment and at the one and three month follow-up visits.

RATIONALE: Studying a patient's understanding of his or her illness, pain, symptoms, and quality-of-life may help the study of advanced cancer and may help patients live more comfortably. PURPOSE: This clinical trial is studying pain and symptom distress in patients with advanced colon cancer, rectal cancer, pancreatic cancer, or liver cancer.

During a submaximal task, gradual muscle fatigue occurs, which inevitably results in a decline in performance (mechanical failure). Elite athletes are known to employ unconscious compensatory strategies during fatiguing submaximal tasks in an attempt to delay the onset of mechanical failure as long as possible. The purpose of this study was to gain valuable insight into the strategies used by elite swimmers to cope with mechanical failure. Twenty-two swimmers were subjected to a swim test consisting of swimming as long as possible at a predetermined and controlled pace. A light strip positioned at the bottom of the pool allows athletes to get feedback on which gait to keep. The kinematics (stroke rate, stroke length, and efficiency index) and electrical activity of 10 muscle groups were analyzed and compared at the beginning of the test (non-fatiguing conditions), just before the athlete lost the ability to maintain the predetermined pace (pre-mechanical failure), and after the athlete lost the ability to maintain the pace (mechanical failure). It is hypothesized that as fatigue becomes more pronounced and the point of inability to maintain a predetermined speed is approached, increased EMG activity will occur in key muscles while other muscle groups may show more obvious signs of fatigue. In addition, changes in the rhythm and coordination of upper limb movements may occur.

The study aims at evaluating skin wrinkling, puffiness and fatigue and dark circle appearance on asian and african-american healthy volunteer cohorts receiving a cosmetic formulation containing NMN (2%). The product will be evaluated after 28 and 56 days of twice-daily application in comparison with a reference cosmetic formulation using clinical scoring under dermatological control. Cosmetic acceptability and future use will also be subjectively evaluated by analysis of the subjects answers to an evaluation questionnaire.