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Muscle fatigue is when muscles that were initially generating a normal amount of force, then experience a declining ability to generate force. It can be a result of vigorous exercise, but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction. There are two main causes of muscle fatigue ...
Hypertrophy happens when your muscles experience more protein synthesis than breakdown, typically from moderate-weight lifting and higher reps (6 to 12 per set), really focusing on muscle fatigue.
Central nervous system fatigue is a key component in preventing peripheral muscle injury. [28] The brain has numerous receptors, such as osmoreceptors, to track dehydration, nutrition, and body temperature. With that information as well as peripheral muscle fatigue information, the brain can reduce the quantity of motor commands sent from the ...
Overtraining can be described as a point where a person may have a decrease in performance and plateauing as a result of failure to consistently perform at a certain level or training load; a load which exceeds their recovery capacity. [2] People who are overtrained cease making progress, and can even begin to lose strength and fitness.
Other factors, such as muscle fatigue, inadequate stretching before exercise, and loss of body fluids can also trigger muscle cramps.
Muscle weakness. Muscle weakness is a lack of muscle strength. Its 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 ...
A tetanic contraction (also called tetanized state, tetanus, or physiologic tetanus, the latter to differentiate from the disease called tetanus) is a sustained muscle contraction [2] evoked when the motor nerve that innervates a skeletal muscle emits action potentials at a very high rate. [3][4] During this state, a motor unit has been maximally stimulated by its motor neuron and remains that ...
Muscle atrophy is the loss of skeletal muscle mass. It can be caused by immobility, aging, malnutrition, medications, or a wide range of injuries or diseases that impact the musculoskeletal or nervous system.