Exersize
References
1. A forest bathing trip increases human natural killer activity and expression of anti-cancer proteins in female subjects.
"On day 1, the subjects walked for two hours in the afternoon in a forest field; on day 2, they walked for two hours each
in the morning and afternoon in two different forest fields; and on day 3, the subjects finished the trip and returned to
Tokyo after drawing blood and completing a questionnaire. Blood and urine were sampled on the second and third days
during the trip, and on days 7 and 30 after the trip. NK activity, numbers of NK and T cells, and granulysin, perforin,
and granzymes A/B-expressing lymphocytes in the blood samples, the concentrations of estradiol and progesterone in
serum, and the concentrations of adrenaline and noradrenaline in urine were measured. Similar control measurements
were made before the trip on a normal working day. The concentrations of phytoncides in the forests were measured.
The forest bathing trip significantly increased NK activity and the numbers of NK, perforin, granulysin, and
granzymes A/B-expressing cells and significantly decreased the percentage of T cells, and the concentrations
of adrenaline and noradrenaline in urine. The increased NK activity lasted for more than 7 days after
the trip. Phytoncides, such as alpha-pinene and beta-pinene were detected in forest air. These findings indicate that a
forest bathing trip also increased NK activity, number of NK cells, and levels of intracellular anti-cancer proteins in
female subjects, and that this effect lasted at least 7 days after the trip. Phytoncides released from trees and decreased
stress hormone levels may partially contribute to the increased NK activity."
1. A forest bathing trip increases human natural killer activity and expression of anti-cancer proteins in female subjects.
"On day 1, the subjects walked for two hours in the afternoon in a forest field; on day 2, they walked for two hours each
in the morning and afternoon in two different forest fields; and on day 3, the subjects finished the trip and returned to
Tokyo after drawing blood and completing a questionnaire. Blood and urine were sampled on the second and third days
during the trip, and on days 7 and 30 after the trip. NK activity, numbers of NK and T cells, and granulysin, perforin,
and granzymes A/B-expressing lymphocytes in the blood samples, the concentrations of estradiol and progesterone in
serum, and the concentrations of adrenaline and noradrenaline in urine were measured. Similar control measurements
were made before the trip on a normal working day. The concentrations of phytoncides in the forests were measured.
The forest bathing trip significantly increased NK activity and the numbers of NK, perforin, granulysin, and
granzymes A/B-expressing cells and significantly decreased the percentage of T cells, and the concentrations
of adrenaline and noradrenaline in urine. The increased NK activity lasted for more than 7 days after
the trip. Phytoncides, such as alpha-pinene and beta-pinene were detected in forest air. These findings indicate that a
forest bathing trip also increased NK activity, number of NK cells, and levels of intracellular anti-cancer proteins in
female subjects, and that this effect lasted at least 7 days after the trip. Phytoncides released from trees and decreased
stress hormone levels may partially contribute to the increased NK activity."