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.

47

Pro

0

Against

Evidence from Studies

Supporting (1)

47

Community contributions welcome

47

Influence of 8-weeks of supervised static stretching or resistance training of pectoral major muscles on maximal strength, muscle thickness and range of motion

Randomized Controlled Trial

Human

2024 Jun

The 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.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Influence of 8-weeks of supervised static stretching or resistance training of pectoral major muscles on maximal strength, muscle thickness and range of motion

Score: 47

DOI: 10.1007/s00421-023-05413-y

Similar Assertions

Stretching your chest muscles for 15 minutes, 4 times a week for 8 weeks, might build muscle just as much as lifting weights — studies say it could increase muscle thickness by around 6%.

47

0

89%

Stretching your chest muscles regularly might make them stronger—almost as much as lifting weights does—if you do it for 15 minutes, 4 times a week for two months.

47

0

86%

If you're someone who exercises regularly, doing chest workouts 3 times a week for 8 weeks might make your chest muscles about 10% stronger, but it won’t change how far you can move your shoulders.

47

0

79%

If you stretch or lift weights for 8 weeks, your chest muscle might grow a little, but that growth doesn’t explain much of why you get stronger—other factors are probably doing more of the work.

47

0

72%