Key Takeaway
An 8-week minimalist shoe walking program significantly increased foot muscle size and strength compared to conventional footwear, providing evidence that footwear choice directly impacts intrinsic foot muscle development.
Summary
This randomized controlled trial investigated whether transitioning to minimalist shoes for daily walking could strengthen intrinsic foot muscles. Participants were randomly assigned to either a minimalist shoe group or a conventional shoe control group for 8 weeks.
Using MRI to measure foot muscle cross-sectional area and functional tests to assess foot strength, the researchers found that the minimalist shoe group experienced significant increases in intrinsic foot muscle size and strength compared to controls. The gains were comparable to those seen with targeted foot exercise programs.
The study provides strong evidence that simply switching to minimalist footwear for everyday walking — without any additional foot exercises — is sufficient to produce meaningful gains in foot muscle strength. This has practical implications for foot health, as stronger intrinsic foot muscles are associated with better arch support and reduced injury risk.