Nerve Muscle Fatigue Experiments

• The praktikum involves nerve muscle fatigue in individuals, consisting of four experiments

Steady State

• Steady state refers to work that can be sustained over a long duration by producing energy aerobically
• Steady state is achieved by providing an ergograph with not too heavy resistance and a sufficient ergograph trigger pull frequency for recovery

Impact of Circulation Obstruction

• Experiment II explores the impact of disrupted blood circulation using a sphygmomanometer cuff on the working upper arm
• The ergograph is set with a light load and a trigger pull frequency of 1 pull per 4 seconds
• Blood vessel occlusion is performed after the 12th pull, and occlusion is stopped when the ergogram indicates total fatigue
• After stopping blood vessel occlusion, recovery occurs gradually, and the ergogram rises regularly

Influence of Rest and Massage

• Experiment III examines the influence of rest and massage
• The ergograph is set to near-maximum weight, with an ergograph trigger pull frequency of 1 pull per second, which quickly induces total fatigue
• The subject is given 2 minutes of rest, then resumes work, followed by another 2 minutes of rest with massage before resuming work until exhaustion
• Correct massage can lead to faster recovery, as concluded from observations of ergograms b and c

Pain during Ergograph Use

• Near-maximal ergograph load and 1x/second trigger pull, alongside rapid blood vessel occlusion, quickly cause total exhaustion with pain
• The main cause of pain in this experiment is ischemia of the working organ

Effects of Cuff Pressure

• When a cuff is applied to the upper arm, and a significant load is applied, the subject quickly experiences total fatigue and unbearable pain
• This may lead to O2 deficiency, ATP depletion, accumulation of metabolic waste, and electrolyte imbalance

Impact of Heavy Weight and High Frequency

• Heavy ergographic training at one pull per second induces quick fatigue
• After 2 minutes of rest, the subject cannot return to their initial work level

Purposes of Massage

• The purpose of massage during muscle fatigue training is to restore circulation, and relax tense muscles

Simulating Circulation Disruption

• Muscle fatigue training disrupts circulation by occluding the arm

Muscle Nerve Activity

• Observed during muscle nerve fatigue in individuals with ergographs involves the index finger, lower arm muscles, and upper arm muscles being studied

Proper Massage Technique

• Effective massage involves a strong pressure towards the periphery, followed by a light pressure towards the heart

Massage Direction

• Massage from the cubital fossa to the fingertips should be performed with strong pressure to enhance arterial blood flow

Ischemia

• Intolerable pain in ischemic organs results from hypoxia in PS nerves
• In fatigued muscle experiments, the first source of muscle energy is creatine phosphate
• During experiments with blood vessel occlusion, muscles produce 2 ATP from anaerobic processes
• In experiments involving fatigue of subject muscles by performing a one-second pull with near-maximal load, metabolic substrates obstruct actin and myosin binding, inhibiting muscle contraction

Steady State Exercise

• In steady state exercises using the forefinger to pull triger, the forefinger muscles are more likely to maintain a certain attitude

Occlusion Timing

• Oklusion occurs on the 13th pull

Heavy Lifting

• Exercising with heavy weight at a rate of 4 seconds per pull, followed by occlusion

Massage Therapy

• The individual is going through massage therapy sessions

Ergograph Use

• During ergograph use with heavy weight and a 1-second pull, recovery occurs after massage

Post Exercise

• Massage following exercise, the goal is to promote venous return from the fingertips to the cubital fossa