Fig. 3

Variation of salivary α-amylase levels changes a from during-work level to pre-work and b from post-work to during-work. The bar in a describes changes in the salivary α-amylase levels of participants in the control condition (left) and Japanese cedar wood panels (experimental; light) conditions: male participants (white) and female participants (black). CNT indicates the control condition, while WOOD indicates the experimental condition. Differences between conditions were not significant. Data are shown as mean ± SEM. The bars in b describes changes in the salivary α-amylase levels of participants in the control condition (left) and Japanese cedar wood panels (experimental; light) conditions: male participants (white) and female participants (black). Difference in values between male and female participants was significant (p = 0.031). *statistical significance (p < 0.05). Data are shown as mean ± SEM