The Study
The regulating pathway of creatine on muscular protein metabolism depends on the energy state.
This study looked at chicken muscle cells in a dish and saw what happened when they added creatine. It can show some links between creatine and muscle changes, but it can't prove that creatine causes these effects in real animals or people.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
This study looked at how creatine affects muscle cells from baby chickens when they have enough food or are starving. It found that creatine helps build muscle when energy is low, but only if there’s no glucose around.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 58 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This suggests creatine might help protect muscles during fasting or low-energy states, but not when energy is readily available.
- 2Creatine made muscle cells produce more protein when energy was normal.
- 3When starving, it reduced muscle breakdown and helped protect cells.
- 4But adding glucose canceled these benefits.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
American journal of physiology. Cell physiology
Year
2022
Authors
Mingfa Sun, H. Jiao, Xiaojuan Wang, Haifang Li, Yunlei Zhou, Jingpeng Zhao, Hai Lin
Related Content
Claims (5)
When chicken muscle cells are starved, adding creatine seems to boost a key protein for energy and reduce harmful molecules, which might help the cells' powerhouses work better under stress.
In chicken muscle cells with normal energy, adding creatine seems to boost protein building and turn on key muscle growth switches in the cells.
When chicken muscle cells are starved, adding creatine seems to lower levels of two proteins that make muscles waste away — this might mean creatine helps protect muscles when there's not enough energy.
Creatine helps protect tiny muscle cells from shrinking when they're starved, but only when there's no sugar around — it seems to work only when energy is low.
Taking creatine makes your muscle cells swell, which tells your body to start building more muscle, and insulin makes this happen even better by boosting muscle-building signals and slowing down muscle breakdown.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.