An experimental study was conducted to observe the effects on the size and strength of the biceps brachii muscle of an exercise routine that trained the biceps to failure during each workout. The workout routine used ten exercises that specifically isolated the biceps brachii. A series of experiments measuring the size, maximum force, and relationship between force and electromyographic signal ...

INTRODUCTION The effects of stretch-induced damage, such as loss of force and appearance of localized sarcomere damage, are often explained by the popping sarcomere hypothesis [1]. This hypothesis contends that sarcomeres operating on the descending limb of the force-length relationship (FLR) are unstable. During a stretch, they are thought to undergo rapid lengthening until filament overlap is...

The extent and characteristics of muscle fatigue of different muscle groups when subjected to a similar fatiguing task may differ. Thirteen healthy young men performed sustained contractions at 50% maximal voluntary contraction (MVC) force until task failure, with four different muscle groups, over two sessions. Per session, one upper limb and one lower limb muscle group were tested (knee exten...

The present study aimed to elucidate whether the type of feedback influences the performance and the motor cortical activity when executing identical visuomotor tasks. For this purpose, time to task failure was measured during position- and force-controlled muscular contractions. Subjects received either visual feedback about the force produced by pressing a force transducer or about the actual...

1 SIGN Guideline 35: Diagnosis and treatment of heart failure due to left ventricular systolic dysfunction. Available on: http://www.sign.ac.uk/guidelines/fulltext/35/index.html 2 NICE Guideline. Chronic heart failure: Management of chronic heart failure in adults in primary and secondary care. Available from: http://www.nice.org.uk/ 3 Remme WJ, Swedberg K; Task Force for the Diagnosis and Trea...

No matter in which clinical field you will be working in the future, you will be confronted with cases of acute renal failure. In this acute emergency illness, various pathomechanisms come together and lead to a principally reversible decrease in renal function, often involving disbalances of water and electrolytes. The different types of acute renal failure have to be understood well in order ...

No matter in which clinical field you will be working in the future, you will be confronted with cases of acute renal failure. In this acute emergency illness, various pathomechanisms come together and lead to a principally reversible decrease in renal function, often involving disbalances of water and electrolytes. The different types of acute renal failure have to be understood well in order ...

This paper reviews studies performed by the authors and by others on the levels of high energy phosphate compounds-adenosine triphosphate (ATP), adenosine diphosphate (ADP), and creatine phosphate (CP )-of cardiac muscle under various conditions influencing contractile force. Interference with energy metabolism decreases both contractile force and high energy phosphates, especially CP. Certain ...

No matter in which clinical field you will be working in the future, you will be confronted with cases of acute renal failure. In this acute emergency illness, various pathomechanisms come together and lead to a principally reversible decrease in renal function, often involving disbalances of water and electrolytes. The different types of acute renal failure have to be understood well in order ...

We report here atomic force microscopy experiments designed to uncover the nature of failure mechanisms occuring within the process zone at the tip of a crack propagating into a silica glass specimen under stress corrosion. The crack propagates through the growth and coalescence of nanoscale damage spots. This cavitation process is shown to be the key mechanism responsible for damage spreading ...