title: Effect of the push-up exercise at different palmar width on muscle activities.
abstract: [Purpose] The purpose of the present study was to determine the effects of changes in palmar width on the muscle activities of the shoulder and truncus muscles during push-up exercise. [Subjects] Twelve healthy adult males participated in this study as subjects. [Methods] Push-up exercises were performed with three different palmar width in narrow (50%), neutral (100%), and wide positions (150%). We measured the muscle activities of the deltoideus p. acromialis, pectoralis minor, pectoralis major, serratus anterior, biceps brachii, triceps brachii, latissimus dorsi, and infraspinatus. [Results] Pectoralis minor, triceps brachii, and infraspinatus muscle activities were greater during push-ups performed with the 50% palmar width compared with the other palmar widths. Pectoralis major muscle activity was greater during push-ups performed with the 50% and 100% palmar widths compared with the 150% palmar width. Serratus anterior muscle activity was greater during push-ups performed with the 150% palmar width compared with the other palmar widths. [Conclusion] These results are expected to serve as reference materials for push-up exercise applications in training programs for truncus muscle strengthening or rehabilitation programs for scapula patients.
authors.affiliation: Department of Leisure Sports, Jungwon University, Republic of Korea.
authors.forename: You-Sin
authors.initials: YS
authors.lastname: Kim
authors.affiliation: Department of Physical Education, Pusan National University, Republic of Korea.
authors.forename: Do-Yeon
authors.initials: DY
authors.lastname: Kim
authors.affiliation: Department of Physical Education, Pusan National University, Republic of Korea.
authors.forename: Min-Seong
authors.initials: MS
authors.lastname: Ha
keywords: Muscle activities; Palmar width; Push-up exercise