TY - JOUR
T1 - Damage and the repeated bout effect of arm, leg, and trunk muscles induced by eccentric resistance exercises
AU - Chen, Trevor C.
AU - Yang, Tsung Jen
AU - Huang, Min Jyue
AU - Wang, Ho Seng
AU - Tseng, Kuo Wei
AU - Chen, Hsin Lian
AU - Nosaka, Kazunori
N1 - Funding Information:
1Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan 2Department of Exercise and Health Sciences, University of Taipei, Taipei, Taiwan 3Department of Physical Education, Health and Recreation, National Chiayi University, Chiayi County, Taiwan 4Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia
Funding Information:
The authors thank Mr. Yu‐Chieh Chou for his assistance with the data collection. This work was financially supported by the Ministry of Science and Technology (MOST 105‐2918‐I‐003‐003 & 105‐2628‐H‐415‐036‐MY3) and the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. The authors would like to appreciate Professor Tzyy‐Yuang Shiang (Taiwan Normal University) for letting us use his equipment (MP150 Systems) to collect data.
Funding Information:
The authors thank Mr. Yu-Chieh Chou for his assistance with the data collection. This work was financially supported by the Ministry of Science and Technology (MOST 105-2918-I-003-003 & 105-2628-H-415-036-MY3) and the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. The authors would like to appreciate Professor Tzyy-Yuang Shiang (Taiwan Normal University) for letting us use his equipment (MP150 Systems) to collect data.
Publisher Copyright:
© 2019 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
PY - 2019/5
Y1 - 2019/5
N2 - This study compared nine resistance eccentric exercises targeting arm, leg, and trunk muscles in one session for changes in maximal voluntary isometric contraction strength (MVC), delayed onset muscle soreness (DOMS), plasma creatine kinase (CK) activity, and myoglobin (Mb) concentration after the first and second bouts. Fifteen sedentary men (20-25 years) performed 5 sets of 10 eccentric contractions with 80% of MVC load for the elbow flexors (EF), elbow extensors (EE), pectoralis, knee extensors (KE), knee flexors (KF), plantar flexors (PF), latissimus, abdominis, and erector spinae (ES) in a randomized order and repeated the same exercises 2 weeks later. MVC decreased at 1 (16%-57%) to 4 (13%-49%) days, DOMS developed (peak: 43-70 mm), and CK activity (peak: 23 238-207 304 IU/L) and Mb concentration showed large increases after the first bout. The magnitude of decrease in MVC was greater (P < 0.05) for EF, EE, and PEC than others and for KF than KE, PF, and ES. DOMS was greater (P < 0.05) for EF, EE, and ES than others. Changes in all measures were smaller (P < 0.05) after the second than the first bout, and the magnitude of the repeated bout effect was similar among the muscles. Plasma CK activity and Mb concentration did not increase significantly after the second exercise bout. It was concluded that muscle damage was greater for arm than leg muscles, and muscle proteins in the blood increased to a critical level after unaccustomed whole-body resistance exercises, but the magnitude of damage was largely attenuated for all muscles similarly after the second bout.
AB - This study compared nine resistance eccentric exercises targeting arm, leg, and trunk muscles in one session for changes in maximal voluntary isometric contraction strength (MVC), delayed onset muscle soreness (DOMS), plasma creatine kinase (CK) activity, and myoglobin (Mb) concentration after the first and second bouts. Fifteen sedentary men (20-25 years) performed 5 sets of 10 eccentric contractions with 80% of MVC load for the elbow flexors (EF), elbow extensors (EE), pectoralis, knee extensors (KE), knee flexors (KF), plantar flexors (PF), latissimus, abdominis, and erector spinae (ES) in a randomized order and repeated the same exercises 2 weeks later. MVC decreased at 1 (16%-57%) to 4 (13%-49%) days, DOMS developed (peak: 43-70 mm), and CK activity (peak: 23 238-207 304 IU/L) and Mb concentration showed large increases after the first bout. The magnitude of decrease in MVC was greater (P < 0.05) for EF, EE, and PEC than others and for KF than KE, PF, and ES. DOMS was greater (P < 0.05) for EF, EE, and ES than others. Changes in all measures were smaller (P < 0.05) after the second than the first bout, and the magnitude of the repeated bout effect was similar among the muscles. Plasma CK activity and Mb concentration did not increase significantly after the second exercise bout. It was concluded that muscle damage was greater for arm than leg muscles, and muscle proteins in the blood increased to a critical level after unaccustomed whole-body resistance exercises, but the magnitude of damage was largely attenuated for all muscles similarly after the second bout.
KW - creatine kinase activity
KW - delayed onset muscle soreness
KW - maximal isometric contraction strength
KW - protective effect
KW - rhabdomyolysis
UR - http://www.scopus.com/inward/record.url?scp=85061206118&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061206118&partnerID=8YFLogxK
U2 - 10.1111/sms.13388
DO - 10.1111/sms.13388
M3 - Article
C2 - 30663816
AN - SCOPUS:85061206118
SN - 0905-7188
VL - 29
SP - 725
EP - 735
JO - Scandinavian Journal of Medicine and Science in Sports
JF - Scandinavian Journal of Medicine and Science in Sports
IS - 5
ER -