The Claim
In recreationally active adults, static stretching of the pectoralis major muscle for 15 minutes per day, 4 days per week over 8 weeks is associated with significant improvements in shoulder range of motion, as measured by an approximately 8.9% reduction in the bar width required during a shoulder pass-through test, and these improvements are greater than those achieved through resistance training.
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.
If you stretch your chest muscles regularly for about 15 minutes, 4 times a week, for 8 weeks, you’ll likely get more shoulder flexibility—more than if you just did strength training.
See the scientific wording
Static stretching of the pectoralis major for 15 minutes per day, 4 days per week over 8 weeks is associated with significant improvements in shoulder range of motion (approximately 8.9% reduction in bar width required for shoulder pass-through test), with greater gains than those from resistance training in recreationally active adults.
What the research says
1 studyThe study found that stretching the chest muscles for 15 minutes, 4 times a week, improved shoulder flexibility more than strength training, which matches what the claim says.
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.