Research Articles
The research presented below provides valuable insights and serves as an important foundation for understanding natural foot health. However, it is worth noting that many aspects of these topics have yet to be formally researched.
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This study looked at whether weak toe grip strength in older adults is linked to falling. Researchers found that among various factors tested, only the toe grip strength of the dominant foot was significantly related to fall risk—those with weaker grip in that foot were more likely to have fallen. This suggests that measuring toe strength, especially in the dominant foot, could help identify older adults at higher risk of falling.
The Impact of a Foot-Toe Orthosis on Dynamic Balance: An Exploratory Randomized Control Trial
This study explored the effect of a toe separators on dynamic balance in healthy young adults and found that wearing the orthoses for 4 weeks significantly improved balance compared to both a shoe-only group and a control group. The results suggest that toe separators could be a novel intervention for enhancing balance, which could have implications for injury prevention and rehabilitation.
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Survey in China and India of feet that have never worn shoes
This study observed the foot health of individuals in China and India who have never worn shoes, finding that they generally had fewer foot problems compared to those who wear shoes. The barefoot individuals exhibited strong and flexible feet with a wide range of motion, and most of their foot issues were non-painful and mild. The research concluded that shoes, especially ill-fitting ones, are the primary cause of many foot problems and recommended that children should be allowed to go barefoot for as long as possible to develop healthy feet.
This study found that kids who grow up spending a lot of time barefoot tend to develop stronger, healthier feet — with higher arches, wider feet, and fewer toe deformities — compared to kids who mostly wear shoes. The differences were noticeable across all age groups, suggesting that being barefoot during childhood helps feet grow more naturally. These findings suggest that regular barefoot activity could have long-term benefits for foot health and movement.
Foot Morphological Difference between Habitually Shod and Unshod Runners
This study compared the feet of runners who grew up mostly barefoot (unshod, from India) with those who wore shoes from a young age (shod, from China). Using 3D scans, researchers found that barefoot runners had wider feet, straighter big toes, and more space between the big toe and second toe compared to those who always wore shoes. These differences suggest that growing up barefoot allows the feet to develop more naturally, which could help improve comfort, reduce injury risk, and guide better shoe design.
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Running in highly cushioned shoes increases leg stiffness and amplifies impact loading
This study found that running in highly cushioned shoes actually increased the impact on the legs, especially at faster speeds. Instead of absorbing shock, cushioned shoes caused runners to stiffen their legs more, which led to greater force on landing. This may help explain why cushioned shoes haven’t reduced running injuries as much as expected.
Influence of Maximal Running Shoes on Biomechanics Before and After a 5K Run
This study found that runners wearing cushioned shoes—specifically maximal running shoes with extra padding—experienced higher impact forces and loading rates on their legs compared to those wearing neutral shoes, both before and after a 5K run. These forces are linked to a higher risk of injury, suggesting that switching to heavily cushioned shoes might actually increase injury risk for some runners. Despite feeling softer and more comfortable, cushioned shoes may not offer the protective benefits many expect.
A 6-Week Transition to Maximal Running Shoes Does Not Change Running Biomechanics
This study found that after 6 weeks of using cushioned shoes—specifically maximal running shoes—runners did not show any significant changes in how their bodies absorbed impact while running. Despite the extra padding, these cushioned shoes still resulted in higher impact forces and loading rates compared to traditional shoes, which could mean a higher risk of injury. In short, giving runners time to adjust to maximal cushioned shoes didn’t lead to safer or better biomechanics.
Differences in running biomechanics between a maximal, traditional, and minimal running shoe
This study compared cushioned shoes—specifically maximal, traditional, and minimal running shoes—from the same brand to isolate how midsole thickness affects running mechanics. It found that while minimal shoes had a higher loading rate, maximal cushioned shoes caused more foot rolling (eversion), which could increase injury risk. The results suggest that not all differences in running impact are due solely to cushioning, and more research is needed to understand how different cushioned shoes truly affect runners.
Accuracy of self-reported foot strike pattern detection among endurance runners
This study found that most endurance runners are not very good at accurately identifying how their feet hit the ground when they run—only about 43% got it right. Those who were unsure of their foot strike or wore shoes with a higher heel-to-toe drop (a common feature in many cushioned shoes) had a higher risk of recent running injuries. The findings suggest that cushioned shoes may affect a runner’s ability to sense and adjust their gait, which could impact injury prevention strategies.
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Daily activity in minimal footwear increases foot strength
This study shows that wearing minimal footwear, which provides little or no support, for daily activities can significantly increase foot muscle strength. After six months of using minimal footwear, participants saw an average 57.4% improvement in foot strength, with those who had been wearing such shoes for over two years showing similar gains. The increased foot strength could help improve balance and walking ability.
This study looked at whether weak toe grip strength in older adults is linked to falling. Researchers found that among various factors tested, only the toe grip strength of the dominant foot was significantly related to fall risk—those with weaker grip in that foot were more likely to have fallen. This suggests that measuring toe strength, especially in the dominant foot, could help identify older adults at higher risk of falling.
Stepping Back to Minimal Footwear Applications Across the Lifespan
The article discusses how minimal footwear can benefit foot health and function across all age groups. It explains that minimal shoes encourage natural foot mechanics, including better foot muscle strength and more efficient walking and running patterns. The article highlights how these shoes are more in line with our evolutionary adaptations, helping to reduce the risk of musculoskeletal issues like foot deformities and injuries, while also supporting healthier movement patterns in children and adults.
Foot Mobilization & Exercise Program combined with Toe Separators Improves Bunions
This study found that a combination of foot mobilization, strengthening exercises, and the use of a toe separator significantly improved pain, strength, range of motion, and alignment in women with moderate hallux valgus (bunions) after 3 months and at a 1-year follow-up. The treatment helped improve foot function and reduced symptoms more than no intervention, suggesting that a multifaceted approach can be beneficial for managing this condition.
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Daily activity in minimal footwear increases foot strength
This study shows that wearing minimal footwear, which provides little or no support, for daily activities can significantly increase foot muscle strength. After six months of using minimal footwear, participants saw an average 57.4% improvement in foot strength, with those who had been wearing such shoes for over two years showing similar gains. The increased foot strength could help improve balance and walking ability.
Stepping Back to Minimal Footwear Applications Across the Lifespan
The article discusses how minimal footwear can benefit foot health and function across all age groups. It explains that minimal shoes encourage natural foot mechanics, including better foot muscle strength and more efficient walking and running patterns. The article highlights how these shoes are more in line with our evolutionary adaptations, helping to reduce the risk of musculoskeletal issues like foot deformities and injuries, while also supporting healthier movement patterns in children and adults.
Differences in running biomechanics between a maximal, traditional, and minimal running shoe
This study compared running mechanics in maximal, traditional, and minimal shoes from the same brand to isolate the effects of stack height. It found that while runners in minimal footwear had a higher loading rate, other impact forces did not differ significantly between shoe types. The maximal shoe showed longer ankle eversion duration, which may increase injury risk—suggesting that not just cushioning, but other design factors, influence how we run.
Form determines function: Forgotten application to the human foot?
This article argues that the shape of the foot—especially having a wide forefoot and properly aligned big toe—is key to how well it functions, and that modern shoes often harm this natural structure. It suggests that minimal footwear, which allows the foot to move and develop naturally, may help preserve or restore healthy foot mechanics and reduce injury risk.
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Foot Morphological Difference between Habitually Shod and Unshod Runners
This study compared the feet of runners who grew up mostly barefoot (unshod, from India) with those who wore shoes from a young age (shod, from China). Using 3D scans, researchers found that barefoot runners had wider feet, straighter big toes, and more space between the big toe and second toe compared to those who always wore shoes. These differences suggest that growing up barefoot allows the feet to develop more naturally, which could help improve comfort, reduce injury risk, and guide better shoe design.
Running in highly cushioned shoes increases leg stiffness and amplifies impact loading
This study found that running in highly cushioned shoes actually increased the impact on the legs, especially at faster speeds. Instead of absorbing shock, cushioned shoes caused runners to stiffen their legs more, which led to greater force on landing. This may help explain why cushioned shoes haven’t reduced running injuries as much as expected.
Influence of Maximal Running Shoes on Biomechanics Before and After a 5K Run
This study found that runners wearing cushioned shoes—specifically maximal running shoes with extra padding—experienced higher impact forces and loading rates on their legs compared to those wearing neutral shoes, both before and after a 5K run. These forces are linked to a higher risk of injury, suggesting that switching to heavily cushioned shoes might actually increase injury risk for some runners. Despite feeling softer and more comfortable, cushioned shoes may not offer the protective benefits many expect.
A 6-Week Transition to Maximal Running Shoes Does Not Change Running Biomechanics
This study found that after 6 weeks of using cushioned shoes—specifically maximal running shoes—runners did not show any significant changes in how their bodies absorbed impact while running. Despite the extra padding, these cushioned shoes still resulted in higher impact forces and loading rates compared to traditional shoes, which could mean a higher risk of injury. In short, giving runners time to adjust to maximal cushioned shoes didn’t lead to safer or better biomechanics.
Differences in running biomechanics between a maximal, traditional, and minimal running shoe
This study compared cushioned shoes—specifically maximal, traditional, and minimal running shoes—from the same brand to isolate how midsole thickness affects running mechanics. It found that while minimal shoes had a higher loading rate, maximal cushioned shoes caused more foot rolling (eversion), which could increase injury risk. The results suggest that not all differences in running impact are due solely to cushioning, and more research is needed to understand how different cushioned shoes truly affect runners.
Accuracy of self-reported foot strike pattern detection among endurance runners
This study found that most endurance runners are not very good at accurately identifying how their feet hit the ground when they run—only about 43% got it right. Those who were unsure of their foot strike or wore shoes with a higher heel-to-toe drop (a common feature in many cushioned shoes) had a higher risk of recent running injuries. The findings suggest that cushioned shoes may affect a runner’s ability to sense and adjust their gait, which could impact injury prevention strategies.
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This study tested whether textured insoles affect how runners move and feel. Sixteen male recreational runners did short indoor runs with and without textured insoles, and the insoles were found to reduce the force of impact when feet hit the ground and made the runners feel more aware of their foot contact. These changes were likely due to shorter strides, quicker steps, and more foot-ground contact time, suggesting textured insoles could help reduce injury risk by softening landing forces.
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This study found that when the big toe is pushed inward—similar to what happens in narrow toe box shoes—blood flow to the bottom of the foot decreases, which could affect foot health and healing. The effect was more pronounced in people with lower arches, suggesting that tight toe boxes may be especially problematic for them. These findings raise concerns about how everyday footwear could impact long-term foot function and recovery.
Fancy Shoes and painful feet: Hallus valgus and fracture risk in medieval Cambridge, Eng
This study found that wearing fashionable pointed-toe shoes with narrow toe boxes in medieval Cambridge likely led to more cases of hallux valgus (bunions), especially among wealthier groups. People with this condition were more prone to falls and fractures, suggesting that these stylish but restrictive toe boxes may have compromised balance and mobility.
The Role of Footwear in the Pathogenesis of Hallux Valgus
This study used computer simulations to show that wearing shoes—especially ones with a tight toe box—puts stress on the inside of the big toe joint, which may lead to bunions (hallux valgus). By comparing barefoot early humans to modern shoe-wearing athletes, researchers found that stress and changes in toe joint angles increased over time, supporting the idea that narrow footwear plays a key role in bunion development.
Footwear characteristics and foot problems in older people
This study found that many older adults wear shoes with a toe box that's too narrow or short for their feet, which is linked to bunions (hallux valgus), corns, and foot pain. Women were more likely to wear ill-fitting shoes, especially those with high heels or tight toe boxes, increasing their risk of foot deformities. The research suggests that properly fitted shoes with roomier toe boxes can help prevent or reduce foot problems in older adults.
The influence of great toe valgus on pronation and frontal plane knee motion during running
This study examined how the angle of the great toe (when it points outward, called "valgus") affects foot stability and movement of the knee during running. The researchers found that a greater angle of toe valgus was linked to increased foot pronation (the inward rolling of the foot) and greater knee movement, both of which can contribute to running-related knee injuries. The results suggest that the position of the great toe plays an important role in overall stability, affecting both foot mechanics and knee joint motion during running.
Feet and Footwear: Applying Biological Design and Mismatch Theory to Running Injuries
This article examines how modern athletic shoes may be contributing to the high rates of running injuries by causing a mismatch with the natural structure and function of the human foot. The authors argue that shoes with features like narrow toe boxes and heavy cushioning impair foot stability, flexibility, and sensory feedback, which are essential for efficient and injury-free running. They suggest that footwear designs that do not allow for the natural spread and movement of the toes, especially the great toe, could lead to improper foot mechanics, increasing the risk of knee and other running-related injuries.
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Foot Mobilization & Exercise Program combined with Toe Separators Improves Bunions
This study found that a combination of foot mobilization, strengthening exercises, and the use of a toe separator significantly improved pain, strength, range of motion, and alignment in women with moderate hallux valgus (bunions) after 3 months and at a 1-year follow-up. The treatment helped improve foot function and reduced symptoms more than no intervention, suggesting that a multifaceted approach can be beneficial for managing this condition.
The Impact of a Foot-Toe Orthosis on Dynamic Balance: An Exploratory Randomized Control Trial
This study explored the effect of a toe separators on dynamic balance in healthy young adults and found that wearing the orthoses for 4 weeks significantly improved balance compared to both a shoe-only group and a control group. The results suggest that toe separators could be a novel intervention for enhancing balance, which could have implications for injury prevention and rehabilitation.