Inhalation of Shin–I essential oil enhances lactate clearance in treadmill exercise

• Published in: Asian Pacific Journal of Tropical Biomedicine
• Main Authors: Hsuan-Ying Chen, Ming-Fu Wang, Jun-Ying Lin, Ying-Chieh Tsai, Fu-Chou Cheng
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wolters Kluwer Medknow Publications 2014
• Subjects: Blood; Lactate; Shin-I essential oil; Treadmill exercise; Arctic medicine. Tropical medicine; RC955-962; Biology (General); QH301-705.5; Arctic
• Online Access: https://doi.org/10.1016/S2221-1691(14)60225-2; https://doaj.org/article/66756c020d22499a9888c2c955783a63

Objective: To evaluate the effect of Shin-I essential oil inhalation on blood lactate changes in rats subjected to treadmill exercise. Methods: Adult male Sprague Dawley rats (n=12) were randomly divided into the control or the Shin-I group. Rats were subjected to a treadmill exercise program (15 m/min for 30 min). After exercise, rats were exposed to 200 μL of water or Shin-I essential oil, respectively, using a nebulizer for 180 min during the recovery period. Blood samples were collected every 15 min. Blood glucose and lactate concentrations were determined in a CMA 600 analyzer. Results: The basal glucose and lactate levels were no significantly different between two groups. After exercise, glucose levels were slightly increased to about 110%-120% of the basal level in both groups. Lactate levels of both groups reached to 110%-140% of basal levels during exercise. In the recovery period, lactate levels further increased to 180% of the basal level and were maintained at a plateau in the control group. However, lactate levels gradually decreased to 60%-65% of the basal level in the Shin-I group. Lactate clearance was significantly enhanced after Shin-I essential oil inhalation. Conclusions: Our results provide evidence that Shin-I essential oil inhalation may accelerate recovery after exercise in rats.