The Study
Insulin induces translocation of the alpha 2 and beta 1 subunits of the Na+/K(+)-ATPase from intracellular compartments to the plasma membrane in mammalian skeletal muscle.
This study looked at rat muscle cells and saw that after giving them insulin, some parts of a pump moved to the cell surface. But it didn’t test if this actually made the pump work better or if it happens in people — so we can’t say insulin does anything important for humans.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Insulin tells muscle cells to move special pumps to their surface, which helps bring in more nutrients like creatine.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 56 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This could explain how insulin helps muscles absorb creatine better, but human effects are unknown.
- 2Insulin moved alpha 2 and beta 1 pumps to the cell surface; alpha 1 and beta 2 stayed put.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
The Journal of biological chemistry
Year
1992
Authors
H. Hundal, A. Marette, Y. Mitsumoto, T. Ramlal, R. Blostein, A. Klip
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.