Chronic Lunar Myopathy Syndrome
Earth designation: Chronic Muscle Atrophy
Chronic presentation of Muscle Atrophy in lunar residents. Rapid loss of skeletal muscle mass and strength from reduced gravitational loading. In lunar gravity, muscles — especially postural muscles in the lower extremities and trunk — receive dramatically reduced stimulation. Without aggressive countermeasures, residents can lose significant muscle mass wi...
Lunar Risk Factors
Reduced mechanical loading of anti-gravity muscles. Caloric deficit from early lunar habitation. Protein synthesis dysregulation. Psychological stress suppressing anabolic hormones. Immobility during illness or injury.
Symptoms
Progressive weakness, exercise intolerance, difficulty with Earth return acclimation, increased injury risk.
Lunar Presentation
Residents may not notice gradual weakness until performing standardized strength tests. Performance on resistance exercises declines. Activities requiring Earth-normal strength (emergency evacuation procedures) become impaired.
Diagnosis
Serial grip strength testing, 1-rep maximum testing, DEXA lean body mass, functional movement screening.
Treatment
Resistance exercise program, protein supplementation, possible testosterone therapy in deficient males.
Lunar Medical Bay Protocol
Mandatory resistance training protocol. Target: maintain >90% of pre-mission lean mass. Protein intake 1.6-2.2 g/kg/day from hydroponics sources. Creatine supplementation (5g/day). Blood Flow Restriction training if injury limits load. Monthly lean mass assessment. Nutritional consultation if not responding.
Evacuation Criteria
Severe myopathy preventing emergency procedure execution. Unable to don/doff EVA suit independently. Rhabdomyolysis.
Prevention
Pre-mission resistance training baseline. Mandatory exercise protocol. Protein targets. Regular functional assessment.