All previously published papers have been reproduced with permission from the publisher. ' " The great end of life is not knowledge but action! " Thomas Henry Huxley (1825-1895) The impact of working technique on physical loads – an exposure profile among newspaper editors. Perceived muscle tension, emotional stress, psychological demands and physical load during VDU work. Toomingas A. Concorda...

Introduction: The manufacturing, service professions, and other occupations commonly require their employees to spend more than 2 hours of their workday in an upright position which can potentially cause temporary or permanent health effects. The objective of this study is to determine the effect of anti-fatigue mats on leg muscle discomfort and muscle activity due to prolonged standing. Mater...

Fatigue is, just like pain, a subjective symptom which may occur in patients with many different diseases and thereby also in patients with RA. In the literature, a consensus definition for fatigue is not presented. However, most authors define fatigue as: ‘an overwhelming, sustained sense of exhaustion and decreased capacity for physical and mental work’ [1]. For chronic fatigue, Piper’s defin...

The ratings of perceived exertion are a widely accepted measure of quantifying, monitoring and regulating exercise intensity. A critical review of the perceived exertion literature since 2000 provides a useful insight into the concepts and themes that have featured prominently in the literature. In this regard, five main themes of enquiry concerning perceived exertion have emerged. These includ...

PURPOSE This study was designed to assess the effects of Ramadan fasting on the profile of mood state and perceived exertion in young soccer players and aerobic and anaerobic performances during the Yo-Yo, repeated sprint ability (RSA) and the Wingate tests. METHODS Twenty junior male soccer players completed the Yo-Yo, the RSA, and the Wingate tests on three different occasions: one-week bef...

Contemporary prosthetic feet are generally optimized for either daily or high-level activities. Prosthesis users, therefore, often require multiple prostheses to participate in activities that span a range of mobility. Crossover feet (XF) are designed to increase the range of activities that can be performed with a single prosthesis. However, little evidence exists to guide clinical prescriptio...

The aim of this study was to analyze the effects a recovery program based on foam roller with and without vibration blood lactate clearance perceived fatigue after water rescue. A quasi-experimental crossover design carried out compare passive (PR) short protocol (FR) (VFR) 100 m rescue in 7 volunteer lifeguards. Blood exertion were measured before rescue, also 5-min intervention. levels decrea...

ii 3 To my father iii 4 iv 5 Abstract The general aim of the thesis is to answer questions on general and differential aspects of perceived exertion and on the measurement of its intensity variation. Overall perceived exertion is commonly treated as a unidemensional construct. This thesis also explores its multidimensional character. Four empirical studies are summarized (Study I-IV). Psychophy...