Kinematics, ground reaction force, and muscle balance produced by backward running

Joseph Threlkeld, T. S. Horn, G. M. Wojtowicz, J. G. Rooney, R. Shapiro

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Backward running (BR) is employed for conditioning and for rehabilitation in sports, orthopaedics, and neurology. Our purposes were to compare kinematics and training effects of BR to forward running (FR). Ten runners (6 males, 4 females, ages 20-34 years) were assigned to a backward running (BRG) or control (FRG) group. Subject isokinetic muscular torque production (IMTP) and biomechanics during FR and BR at 3.58 m/sec were studied at the beginning and after 8 weeks of training. Stance time was significantly shorter during BR. The peak vertical component of the ground reaction force (Fz) and Fz impulse were significantly less during BR. After training, knee extensor IMTP of the BRG increased significantly at 75 and 120°/sec. We concluded that BR produced lower Fz stress than FR and improved knee extensor torque at low speeds. Backward running may be clinically useful for reducing stress to injured joints and for increasing knee extensor strength.

Original languageEnglish
Pages (from-to)56-63
Number of pages8
JournalJournal of Orthopaedic and Sports Physical Therapy
Volume11
Issue number2
StatePublished - 1989
Externally publishedYes

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Biomechanical Phenomena
Running
Muscles
Torque
Knee
Neurology
Knee Joint
Sports
Orthopedics
Rehabilitation
Control Groups

All Science Journal Classification (ASJC) codes

  • Health Professions(all)
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Kinematics, ground reaction force, and muscle balance produced by backward running. / Threlkeld, Joseph; Horn, T. S.; Wojtowicz, G. M.; Rooney, J. G.; Shapiro, R.

In: Journal of Orthopaedic and Sports Physical Therapy, Vol. 11, No. 2, 1989, p. 56-63.

Research output: Contribution to journalArticle

Threlkeld, Joseph ; Horn, T. S. ; Wojtowicz, G. M. ; Rooney, J. G. ; Shapiro, R. / Kinematics, ground reaction force, and muscle balance produced by backward running. In: Journal of Orthopaedic and Sports Physical Therapy. 1989 ; Vol. 11, No. 2. pp. 56-63.
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