Effect of lower-limb dominance and non-dominance shuttle runs under load carriage on the balance responses in young cadets.
10.12047/j.cjap.5634.2018.080
- Author:
Ji-Zheng MA
1
;
Zeng-Gang WANG
1
;
Fei HU
2
;
Yan ZHAO
2
;
Qiang YE
2
;
Qiang-Nian HUANG
1
;
Sheng-Jia XU
1
Author Information
1. The Research Center of Military Physical Training, the Army Engineering University of PLA, Nanjing 211101.
2. Department of Exercise and Health, Nanjing Sport Institute, Nanjing 210014, China.
- Publication Type:Journal Article
- Keywords:
balance abilities;
cross-effects;
dominant side;
non-dominance;
shuttle runs;
unilateral load carriage
- MeSH:
Adolescent;
Exercise;
Exercise Test;
Humans;
Lower Extremity;
Male;
Movement;
Running;
Young Adult
- From:
Chinese Journal of Applied Physiology
2018;34(4):350-354
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:This test was designed to evaluate the effect of lower-limb dominance and non-dominance shuttle runs under load carriage during different exercise load at the same exercise intensity on the balance responses.
METHODS:Ten healthy young males were joined in this experiment, they were (20.80±2.04) years old and (173.99±2.87) cm tall. In a randomized cross-over design, they performed four times shuttle runs under unilateral load carriage:20 m×5 at dominant side, 20 m×5 at non-dominant side, 20 m×10 at dominant side, 20 m×10 at non-dominant side respectively. Balance abilities were evaluated immediately and 20 minute post-exercise respectively, and R-R interval was recorded.
RESULTS:The HR, EPOC and TRIMP for all exercise load were increased significantly after shuttle runs compared to rest (<0.01), the EPOC and TRIMP for 20 m×10 shuttle runs were significantly higher than those for 20 m×5 shuttle runs at the dominant and non-dominant side (<0.01). Compared to the rest, the instability indices (general, anteroposterior and mediolateral movement) for 20 m×5 and 20 m×10 shuttle runs immediately post-exercise at the dominant and non-dominant side were increased significantly (<0.05), and the magnitude of the mediolateral movement for 20 m×10 shuttle runs was higher than that of 20 m×5 shuttle runs (<0.05). While there were no obvious difference between the dominant and the non-dominant side (>0.05), which showed symmetrical change. In addition, during 20 minute recovery, the balance ability for all exercise load was returned to the rest value (>0.05).
CONCLUSIONS:The shuttle runs could impair the trunk control ability immediately post-exercise, the magnitude of mediolateral movement was increased as the exercise load increased. The changes of balance responses were similar between the dominant and the non-dominant side, the dominant and the non-dominant side might show cross-effects.
