VENEX Co., Ltd. (headquartered in Atsugi, Kanagawa; CEO: Taichi Nakamura), which operates recovery-related businesses based on the science of rest, develops a range of proprietary products, including textile products using its patented DPV576 (PHT) technology. In the newly announced study, VENEX conducted joint research with Professor Seiji Nishino, director of the Stanford Sleep & Circadian Neurobiology Laboratory (SNCL), and other researchers. Building on previous findings related to improved perceived restfulness from sleep, the study objectively indicated effects including fewer nighttime awakenings and improved sleep efficiency. The company’s proprietary DPV576 (PHT fiber) technology is a patented functional fiber made with a unique formulation of nanoparticles including platinum. Previous studies have reported results such as reduced stress, immune activation, and increased parasympathetic nervous system activity. This study focused on the number of nighttime awakenings, a factor that affects perceived restfulness from sleep, and examined the impact of wearing garments using DPV576 (PHT fiber) together with Professor Nishino, author of The Stanford Method for Ultimate Sleep and a leading figure in global sleep science. The results showed that garments using the technology improved sleep efficiency. The paper was published on April 5, 2026, in the international academic journal Sensors (Sensors 2026, 26(7), 2247; https://doi.org/10.3390/s26072247). Sleep efficiency is calculated as “actual sleep time ÷ time spent in bed × 100.” It is an indicator not simply of long sleep duration, but of how efficiently a person slept. In general, a target of 85% to 90% or higher is often cited. In this experiment, sleep efficiency reached 92.5%, exceeding the target level (p<0.05). The use of DPV576 (PHT fiber) also reduced the number of nighttime awakenings by approximately 33% (p<0.01). Increased awakenings can prevent deep sleep, lower sleep quality, make it difficult to fa