Changes in Activation of Abdominal Muscles at Selected Angles During Trunk Exercise by Using Ultrasonography
Annals of Rehabilitation Medicine
;
: 950-956, 2015.
Artículo
en Inglés
| WPRIM
| ID: wpr-47923
ABSTRACT
OBJECTIVE:
To investigate the changes of activation of the abdominal muscles depending on exercise angles and whether the activation of rectus abdominis differs according to the location, during curl up and leg raise exercises, by measuring the thickness ratio of abdominal muscles using ultrasonography.METHODS:
We examined 30 normal adults without musculoskeletal problems. Muscle thickness was measured in the upper rectus abdominis (URA), lower rectus abdominis (LRA), obliquus externus (EO), obliquus internus (IO), and transversus abdominis (TrA), at pre-determined angles (30degrees, 60degrees, 90degrees) and additionally at the resting angle (0degrees). Muscle thickness ratio was calculated by dividing the resting (0degrees) thickness for each angle, and was used as reflection of muscle activity.RESULTS:
The muscle thickness ratio was significantly different depending on the angles in URA and LRA. For curl up-URA p=0 (30degrees90degrees), p=0.44 (30degrees90degrees), p=0.44 (30degrees>90degrees), respectively, by one-way ANOVA test-and for leg raise-URA p=0 (30degrees<60degrees), p=0 (60degrees<90degrees), p=0 (30degrees<90degrees) and LRA p=0.01 (30degrees<60degrees), p=0 (60degrees<90degrees), p=0 (30degrees<90degrees), respectively, by one-way ANOVA test-exercises, but not in the lateral abdominal muscles (EO, IO, and TrA). Also, there was no significant difference in the muscle thickness ratio of URA and LRA during both exercises. In the aspect of muscle activity, there was significant difference in the activation of RA muscle by selected angles, but not according to location during both exercises.CONCLUSION:
According to this study, exercise angle is thought to be an important contributing factor for strengthening of RA muscle; however, both the exercises are thought to have no property of strengthening RA muscle selectively based on the location.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Ejercicio Físico
/
Ultrasonografía
/
Músculos Abdominales
/
Recto del Abdomen
/
Júpiter
/
Pierna
Tipo de estudio:
Estudio diagnóstico
Límite:
Adulto
/
Humanos
Idioma:
Inglés
Revista:
Annals of Rehabilitation Medicine
Año:
2015
Tipo del documento:
Artículo
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