Randomized controlled trial of anti-stress effect of low-caffeine green tea on students during pharmacy practice

Randomized controlled trial of anti-stress effect of low-caffeine green tea on students during pharmacy practice - Anti-stress effect of low-caffeine green tea

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000014942

Enrollment

Registered

2014-08-25

Start date

2014-08-25

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stress

Interventions

Low-caffeine green tea Placebo tea

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Student of pharmaceutical sciences in the 5th grade, non-smoker. Obtained written informed consent from the student before participation. Possible to take 500 ml of low-caffeine green tea for 16 days. Possible to check salivary amylase activity two times daily for 10 days.

Exclusion criteria

Exclusion criteria: Taking tranquilizer(s) Smoker Diagnosed as inadequate to participate in the study by a doctor

Design outcomes

Primary

Measure	Time frame
Alteration in salivary amylase activity in students during pharmacy practice for 10 days.	—

Secondary

Measure	Time frame
Physical condition, Sleeping time, State-trait anxiety inventory (STAI) test, Replying to a questionnaire (subjective stress, achievement emotion)	—

Countries

Japan

Contacts

Public ContactKeiko Unno

University of Shizuoka School of Pharmaceutical Sciences

unno@u-shizuoka-ken.ac.jp054-264-5731

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026