Matrix metalloproteinases in exercise and obesity.

Area of Science:

• Biochemistry
• Exercise Physiology
• Molecular Biology

Background:

• Matrix metalloproteinases (MMPs) are crucial enzymes for extracellular matrix degradation.
• MMPs play roles in tissue remodeling, cardiovascular diseases, and obesity.
• MMP-1, MMP-2, and MMP-9 are specifically implicated in exercise and obesity research.

Purpose of the Study:

• To review the effects of resistance and aerobic exercise on MMP-1, MMP-2, and MMP-9.
• To explore the relationship between exercise, obesity, and MMPs.
• To identify gaps in current understanding for future research directions.

Main Methods:

• Literature review of studies investigating exercise interventions and MMP levels.
• Analysis of findings related to acute and chronic resistance exercise.
• Synthesis of results concerning aerobic exercise and MMP responses.

Main Results:

• Resistance exercise effects on MMP-2 and MMP-9 depend on training duration: long-term increases, acute decreases.
• Aerobic exercise shows inconsistent effects on MMPs, with some studies noting MMP-1 reduction.
• Obesity is linked to lower MMP-9 levels, suggesting exercise-induced increases may be beneficial.

Conclusions:

• Exercise modulates MMP-1, -2, and -9 levels, but responses vary by exercise type and duration.
• Understanding the complex interplay between exercise, MMPs, and obesity requires further investigation.
• Future research should focus on acute and chronic MMP responses across diverse subject models to clarify links to cardiovascular disease.