Type of Study Human Clinical Study
Double-blind, placebo-controlled, crossover study
Study Setup Participants:9 male Duration:2 weeks Dosage:14 mg Blackcurrant extract / kg
Key findings

Peripheral blood circulation during rest and during typing work and the improvement in shoulder stiffness caused by poor local circulation was assessed.

Forearm Blood flow increased significantly after ingestion of Black currant Extract

Intake of Black current extracts may improve shoulder stiffness

Authors  Hitoshi Matsumoto, Eri Takenami, Keiko Iwasaki-Kurashige, Takuya Osada, Toshihito Katsumura, Takafumi Hamaoka
Organisation Food and Health R & D Laboratories, Meiji Seika Kaisha Ltd., Sakado, Japan Department of Preventive Medicine and Public Health, Tokyo Medical University, Tokyo, Japan Department of Sports Sciences, The National Institute of Fitness and Sports, Kanoya, Japan
Full research text Available at : https://link.springer.com/article/10.1007%2Fs00421-004-1279-y