Effects of endurance exercise on skeletal muscle and liver metabolic health in male rats with different fitness under chronic circadian rhythm disruption - Scorecard - MDSpire

Effects of endurance exercise on skeletal muscle and liver metabolic health in male rats with different fitness under chronic circadian rhythm disruption

  • By

  • Yu Gu

  • Wenduo Liu

  • Zilin Wang

  • Sang Hyun Kim

  • July 15, 2026

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Clinical Scorecard: Impact of Endurance Training on Metabolic Health of Skeletal Muscle and Liver in Male Rats Experiencing Chronic Circadian Rhythm Disruption with Varying Fitness Levels

At a Glance

CategoryDetail
ConditionCircadian Rhythm Disruption
Key MechanismsImpairment of circadian clock regulation, mitochondrial biogenesis, and metabolic function.
Target PopulationMale Sprague–Dawley rats.
Care SettingAnimal research model.

Key Highlights

  • CR disruption impairs metabolic health in skeletal muscle and liver.
  • Endurance training mitigates metabolic dysfunction caused by CR disruption.
  • Prolonged training exposure enhances mitochondrial and metabolic adaptations.
  • Shorter training duration still provides protective effects on oxidative stress and fibrosis.

Guideline-Based Recommendations

Diagnosis

  • Monitor circadian rhythm disruptions and associated metabolic dysfunction.

Management

  • Implement endurance training to improve metabolic health in cases of circadian disruption.

Monitoring & Follow-up

  • Assess changes in circadian clock proteins, mitochondrial biogenesis, and metabolic markers.

Risks

  • Potential exacerbation of tissue damage with premature or insufficiently adapted exercise.

Patient & Prescribing Data

Not applicable; study conducted on rats.

Endurance training timing and duration are critical for optimizing metabolic adaptations.

Clinical Best Practices

  • Consider exercise timing and duration when prescribing endurance training for metabolic health.
  • Monitor metabolic markers in individuals with circadian rhythm disruptions.

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