Tsuji K, Ishida H, Oba K, Ueki T, Fujihashi Y. Activity of lower limb muscles during treadmill running at different velocities.
J Phys Ther Sci 2015;
27:353-6. [PMID:
25729166 PMCID:
PMC4339136 DOI:
10.1589/jpts.27.353]
[Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/24/2014] [Indexed: 12/03/2022] Open
Abstract
[Purpose] The present study aimed to determine changes in muscle activity while moving on
a treadmill at various speeds. [Subjects] The activities of the left vastus lateralis,
vastus medialis, hip adductors, lateral head of gastrocnemius, medial head gastrocnemius,
soleus, and tibialis anterior of 10 healthy male university students were analyzed.
[Methods] University students walked, jogged, and ran for 10 minutes each in random order,
and then myogenic potentials were measured 10 minutes later for 30 seconds. The flexion
angle of the lower limb upon initial contact, mid stance, and toe off were measured.
[Results] The average walking, jogging, and running speeds were 3.6 ± 0.4, 6.7 ± 0.6, and
10.4 ± 1.3 km/h, respectively. The average electromyographic activities of the vastus
medial, tibialis anterior, medial head of gastrocnemius, and lateral head of gastrocnemius
significantly differed. All muscles were more active during jogging and running than
walking. Only the soleus was more active during running than walking, and the activities
of the hip adductors and vastus lateralis did not significantly differ. [Conclusion]
Velocity is faster and the angles of the lower limbs and ground reaction force (GRF) are
larger during running than walking. The vastus medialis and soleus worked more easily
according to the angle of the knee joint, whereas the tibialis anterior worked more easily
at faster velocities and the medial and lateral heads of the gastrocnemius worked more
easily with an increased GRF.
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