Electrically passive low-level light therapy system and methods incorporating same

A light therapy sub-system, comprising:

• a textile material that absorbs an incident spectrum including one or more of a UV wavelength, a visible wavelength, and a near infrared wavelength and emits light having an emission spectrum including one or more of visible light radiation and near infrared radiation,
• wherein the textile material is electrically passive,
• wherein the light having an emission spectrum including one or more of visible light radiation and near infrared radiation is emitted from the textile material in a direction toward a mammalian body,
• wherein the textile material comprises a network of yarns, wherein the yarns include one or more of a textured yarn and a staple yarn,
• wherein each yarn in the network of yarns includes a textile grade, polymeric host material and 0.01 wt. % to 1.0 wt. % of one or more fluorescent components,
• wherein the fluorescent component having an emission spectrum including visible light radiation has a quantum efficiency of 90% and above,
• wherein the fluorescent component having an emission spectrum in the near infrared range has a quantum efficiency of 50% and above,
• wherein the textile grade, polymeric host material is a homopolymer or a copolymer or a long-chain polymer and is selected from the group consisting of polyesters, polyamides, olefins, acrylics, PMMA, PLA, and polycarbonates, and wherein the textile grade, polymeric host material has an intrinsic viscosity (IV) in a range of 0.5 to 1.0 dL/g, and
• wherein each yarn in the network of yarns further includes less than 2.0 wt. % titanium dioxide.