Synergistic Dominance Induced by Hip Extension Exercise Alters Biomechanics and Muscular Activity During Sprinting and Suggests a Potential Link to Hamstring Strain
-
- Junta Iguchi
- Department of Health and Sports Sciences, Faculty of Health and Medical Sciences, Kyoto University of Advanced Science, Kyoto, Japan;
-
- Tatsuya Hojo
- Faculty of Health and Sports Science, Doshisha University, Kyoto, Japan;
-
- Yoshihiko Fujisawa
- Faculty of Health and Sports Science, Doshisha University, Kyoto, Japan;
-
- Kenji Kuzuhara
- Department of Athletic Training and Conditioning, School of Health and Sport Sciences, Chukyo University, Aichi, Japan;
-
- Ko Yanase
- Faculty of Health and Sports Science, Doshisha University, Kyoto, Japan;
-
- Tetsuya Hirono
- School of Health and Sport Sciences, Chukyo University, Aichi, Japan;
-
- Yumiko Koyama
- Faculty of Medical Science, Department of Tokyo Physical Therapy, TEIKYO University of Science, Tokyo, Japan; and
-
- Hiroshige Tateuchi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
-
- Noriaki Ichihashi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
Description
<jats:title>Abstract</jats:title> <jats:p>Iguchi, J, Hojo, T, Fujisawa, Y, Kuzuhara, K, Yanase, K, Hirono, T, Koyama, Y, Tateuchi, H, and Ichihashi, N. Synergistic dominance induced by hip extension exercise alters biomechanics and muscular activity during sprinting and suggests a potential link to hamstring strain. <jats:italic toggle="yes">J Strength Cond Res</jats:italic> 37(9): 1770–1776, 2023—Hamstring strain is likely to occur during the late swing phase or the first half of the stance phase in sprinting. During the late swing phase, the hamstrings and gluteus maximus (Gmax) contract eccentrically to decelerate the lower limb. We hypothesized that, when the Gmax becomes dysfunctional because of delayed onset muscle soreness (DOMS), the hamstring workload is increased (i.e., there is synergetic dominance), which could lead to an increased risk of strain. A total of healthy 15 male undergraduate or graduate students (age 23.1 ± 1.28 years) were recruited to perform exercises and maximal sprints. On day 1, before subjects performing DOMS-causing exercises, and on day 3, while subjects were experiencing DOMS in the Gmax, lower-limb biomechanical and muscle activity data were recorded using a motion analysis system and electromyography (EMG), respectively. Data were analyzed and compared between day 1 and day 3. Hip flexion angle on day 3 was significantly lower than that on day 1, but the opposite was true for the knee flexion angle (<jats:italic toggle="yes">P</jats:italic> < 0.05). Vastus medialis (VM), biceps femoris (BF), and Gmax muscle activities on day 3 were significantly higher than those on day 1 (<jats:italic toggle="yes">P</jats:italic> < 0.05). Peak propulsive forces on day 3 were significantly higher than those on day 1 (<jats:italic toggle="yes">P</jats:italic> < 0.05). Kinematic changes such as decreased hip flexion angle and EMG changes such as increased BF EMG activity on day 3 to compensate for the loss of function of the Gmax may potentially increase the risk of hamstring strain.</jats:p>
Journal
-
- Journal of Strength and Conditioning Research
-
Journal of Strength and Conditioning Research 37 (9), 1770-1776, 2023-09
Ovid Technologies (Wolters Kluwer Health)
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1360584341838800512
-
- HANDLE
- 2433/286177
-
- ISSN
- 10648011
-
- PubMed
- 37616534
-
- Article Type
- journal article
-
- Data Source
-
- Crossref
- KAKEN
- OpenAIRE
