A specific red light treatment made cartilage cells in a dish more active metabolically
Scientific Claim
Near-infrared light at 850 nm with 4 mW/cm² power density, pulsed mode, applied every other day for 120 seconds, significantly increased metabolic activity in cultured human chondrocytes from a 46-year-old female donor
Original Statement
“Chondrocytes stimulated with 4 mW/cm² at 850 nm (pulsed, every other day, p < 0.001) or 940 nm (continuous, daily, p < 0.001), and with 7 mW/cm² at 850 nm (continuous, daily, p < 0.001), exhibited statistically significant enhanced normalized metabolic activity compared to non-irradiated cells”
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 metabolic activity with statistical significance for this specific parameter, so 'significantly increased' is appropriate.
Evidence from Studies
Supporting (1)
Near-infrared photobiomodulation stimulates viability and cartilage matrix synthesis in human chondrocytes