Fig. 6. Head-neck pressure distribution and alignment values of pillow conditions. (A) Peak pressure, (B) CVAs, (C) CHAs, and (D) CSD. NP, no pillow; NSFP, neck support foam pillow; SFP, standard microfiber filled pillow; HFP, hybrid foam pillow; CVAs, cranio-vertebral angle in supine; CHAs, cranio-horizontal angle in supine; CSD, chin-sternum distance. *p < 0.05, **p < 0.01, ***p < 0.001.
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