The Claim
Five days of dry immersion-induced inactivity impairs skeletal muscle insulin signaling in healthy men, reducing insulin-stimulated Akt Thr308 phosphorylation by approximately 25% and decreasing in vitro glycogen synthesis by 15%, independent of systemic factors.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Five days of complete bed rest in healthy men reduces insulin signaling in muscle tissue by 25% in Akt Thr308 phosphorylation and lowers muscle glycogen synthesis by 15% under controlled laboratory conditions.
See the scientific wording
Five days of dry immersion-induced inactivity impairs skeletal muscle insulin signaling in healthy men, reducing insulin-stimulated Akt Thr308 phosphorylation by approximately 25% and decreasing in vitro glycogen synthesis by 15%, independent of systemic factors.
When muscles are inactive, they stop responding properly to insulin, which prevents sugar from entering the muscle cells and being stored as glycogen. At the same time, the muscle keeps burning fat even when sugar is available, which worsens the problem. This happens because the insulin signal gets weaker at a key step inside the cell, and the muscle loses its ability to switch between fuels.
What the research says
1 studyAfter just five days of lying still without moving, muscle cells from healthy men became less responsive to insulin, meaning they couldn’t store sugar as well—even when tested outside the body. This shows inactivity directly harms how muscles use insulin, not just because of overall body changes.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.