Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Evidence Based Orthopaedics
Abstract number: 25260
THE EFFECTS OF FOOT EXERCISE ON BLOOD FLOW TO DEEP VEINS OF THE
LOWER LIMB
Naonobu TAKAHIRA, Katsufumi UCHIYAMA, Kensuke FUKUSHIMA, Tadashi
KAWAMURA, Moritoshi ITOMAN 2 , Azusa FUJIWARA, Mitsuaki ASHIHARA, Yukiko
KIHARA, Masumi YOSHIMOTO 2 , Masamichi NISHIMURA
Kitasato University, Sagamihara (JAPAN)
Objective: To clarify the appropriate exercise time and the duration, we investigated
the effects of foot exercise on blood flow to the deep veins of the lower limb for the
prevention of deep vein thrombosis (DVT). Materials and Methods: We enrolled 11
normal young adults (men, 8 and women, 3; average age, 23 years). The subjects
performed foot exercise for 1 min (1-min exercise group) or 5 min (5-min exercise
group) with maximum plantar flexion and dorsiflexion of the ankle for 2 s. We
measured peak blood flow volume (FVmax) and peak blood flow velocity (Vmax) at
the right superficial femoral vein using an ultrasound unit with a 7.5-MHz linear
probe. The blood flow was measured at a point 3 min after rest in the supine position
and at 0, 10, 20, and 30 min after the exercise. Both groups of the FVmax and Vmax
values were compared and change in these values was measured at each point after
the exercise. Results: FVmax values increased significantly at 0 min after exercise in
both exercise groups. At 0 min after exercise, Vmax values increased significantly in
the 1-min exercise group but not in the 5-min exercise group. In both exercise
groups, the values FVmax and Vmax decreased to the baseline value 10 min after
exercise. Conclusion: The increase in blood flow induced by foot exercise was a
temporary effect, and foot exercise for 1 min was sufficient for the prevention of DVT.
204