INFORMED
BY RESEARCH.
The research cited throughout this site informed the development of FRE3.0 and ertheX, helping shape the principles, architecture, patented technologies and engineering behind each product.
These studies are presented as part of the research foundation that informed product development. Unless expressly stated, they are not studies of FRE3.0 or ertheX and should not be interpreted as independent validation of either product.
NATURAL TERRAIN
+ HARD SURFACES
Research used to understand how different walking surfaces change underfoot loading.
The effect of terrain on foot pressures during walking
Mohamed O, Cerny K, Jones W, Burnfield JM · Foot & Ankle International · 2005
Concrete / grass / plantar pressureFOOTWEAR
+ NATURAL FUNCTION
Research considered in developing a footwear architecture intended to preserve movement and sensory interaction.
Effect of the upward curvature of toe springs on walking biomechanics in humans
Sichting F, Holowka NB, Hansen OB, Lieberman DE · Scientific Reports · 2020
Toe springs / biomechanics / foot motionWalking in minimalist shoes is effective for strengthening foot muscles
Ridge ST et al. · Medicine & Science in Sports & Exercise · 2019
Minimal footwear / foot muscle strengthFoot strength and stiffness are related to footwear use in a comparison of minimally- vs. conventionally-shod populations
Holowka NB, Wallace IJ, Lieberman DE · Scientific Reports · 2018
Footwear / foot strength / arch stiffnessGROUNDING
RESEARCH
Research considered in the development context for Earthling's grounding technologies.
Effectiveness of grounded sleeping on recovery after intensive eccentric muscle loading
Müller E, Pröller P, Ferreira-Briza F, Aglas L, Stöggl T · Frontiers in Physiology · 2019
Grounding / recovery / eccentric muscle loadingResearch evolves. This library reflects selected studies cited within Earthling's product and technology material and may be updated as our research and development continues.
RESEARCH ENQUIRIES →