Influence of maturation status on eccentric exercise-induced muscle damage and the repeated bout effect in females

Ming Ju Lin, Kazunori Nosaka, Chih Chiao Ho, Hsin Lian Chen, Kuo Wei Tseng, Sébastien Ratel, Chung-Ching Chen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study compared changes in indirect muscle damage markers, proprioception and arterial stiffness after elbow flexor eccentric exercise between pre-pubescent (9-10 y), pubescent (14-15 y), and post-pubescent (20-24 y) healthy, untrained females (n = 13/group). The maturation of the participants was confirmed by the hand bone age. All participants performed two bouts of 30 sub-maximal eccentric contractions (EC1, EC2) using a dumbbell set at 60% of pre-exercise maximal voluntary isometric elbow flexion strength at 90°. Changes in maximal voluntary concentric contraction (MVC) torque, muscle soreness (SOR), plasma creatine kinase activity, proprioception (position sense, joint reaction angle) and arterial stiffness (carotid-femoral pulse-wave velocity: cfPWV) before to 5 days after EC1 and EC2 were compared among groups by a mixed-design two-way ANOVA. Pre-exercise MVC torque and cfPWV were smaller (P < 0.05) for the pre-pubescent (MVC: 10.0 ± 0.9 Nm, cfPWV: 903 ± 60 cm/s) and the pubescent (14.3 ± 1.1 Nm, 967 ± 61 cm/s) than the post-pubescent (19.1 ± 1.4 Nm, 1,103 ± 73 cm/s). Changes in all variables after EC1 were smaller (P < 0.05) for the pre-pubescent (e.g., MVC at 1 d post-exercise: -10 ± 6%, peak SOR: 5 ± 2 mm) than the pubescent (-15 ± 9%, 12 ± 6 mm) and the post-pubescent (-25 ± 7%, 19 ± 13 mm). After EC2, changes in all variables were smaller (P < 0.05) than those after EC1 for all groups (e.g., MVC at 1 d post-exercise, pre-pubescent: -4 ± 6%, pubescent: -9 ± 4%, post-pubescent: -14 ± 5%; peak SOR: 3 ± 2, 7 ± 3, 11 ± 6 mm), but the magnitude of the repeated bout effect was not different (P > 0.05) among the groups. These results show that the extents of muscle damage, and proprioception and arterial stiffness changes after eccentric exercise are greater at later stages of maturation, but the repeated bout effect is not affected by maturation.

Original languageEnglish
Article number1118
JournalFrontiers in Physiology
Volume8
Issue numberJAN
DOIs
Publication statusPublished - 2018 Jan 5

Fingerprint

Proprioception
Vascular Stiffness
Muscles
Torque
Elbow
Hand Bones
Pulse Wave Analysis
Myalgia
Creatine Kinase
Thigh
Analysis of Variance
Joints

Keywords

  • Delayed onset muscle soreness
  • Lengthening contractions
  • Maturation
  • Muscle strength
  • Proprioception

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

Cite this

Influence of maturation status on eccentric exercise-induced muscle damage and the repeated bout effect in females. / Lin, Ming Ju; Nosaka, Kazunori; Ho, Chih Chiao; Chen, Hsin Lian; Tseng, Kuo Wei; Ratel, Sébastien; Chen, Chung-Ching.

In: Frontiers in Physiology, Vol. 8, No. JAN, 1118, 05.01.2018.

Research output: Contribution to journalArticle

Lin, Ming Ju ; Nosaka, Kazunori ; Ho, Chih Chiao ; Chen, Hsin Lian ; Tseng, Kuo Wei ; Ratel, Sébastien ; Chen, Chung-Ching. / Influence of maturation status on eccentric exercise-induced muscle damage and the repeated bout effect in females. In: Frontiers in Physiology. 2018 ; Vol. 8, No. JAN.
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