DEFINITION of 'Lean Six Sigma'. Lean Six Sigma is a managerial approach that combines Six Sigma methods and tools and the lean manufacturing/lean enterprise philosophy, striving to eliminate waste of physical resources, time, effort and talent, while assuring quality in production and organizational processes. Six Sigma certification.
Muscle weakness or myasthenia is a lack of muscle strength. The causes are many and can be divided into conditions that have either true or perceived muscle weakness. True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, including muscular dystrophy and inflammatory myopathy. It occurs in neuromuscular junction disorders, such as myasthenia gravis. Muscle weakness can also be caused by low levels of potassium and other electrolytes within muscle cells. It can be tem
Muscle Atrophy. Muscle atrophy is when muscles waste away. The main reason for muscle wasting is a lack of physical activity. This can happen when a disease or injury makes it difficult or impossible for you to move an arm or leg.You may have muscle loss if one of your limbs appears smaller (not shorter) than the other.iseases can cause muscles to waste away or can make movement difficult, leading to muscle atrophy. These include: 1  amyotrophic lateral sclerosis (ALS, also known as Lou Gehrigâs disease), which affects nerve cells that control voluntary muscle movement.