Shining a specific type of red light on cartilage cells in a dish made them produce more of the slippery substance that helps joints move smoothly
Scientific Claim
Near-infrared light at 940 nm with 17 mW/cm² power density, applied daily for 180 seconds, significantly increased glycosaminoglycan production in cultured human chondrocytes from a 46-year-old female donor
Original Statement
“Chondrocytes stimulated with 17 mW/cm² at 940 nm (continuous, daily, p < 0.001) presented a higher production of GAGs compared to untreated chondrocytes”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The study directly measured GAG production in cultured cells with statistical significance, so 'significantly increased' is appropriate for this specific experimental condition.
Evidence from Studies
Supporting (1)
Near-infrared photobiomodulation stimulates viability and cartilage matrix synthesis in human chondrocytes