TY  - JOUR
AV  - none
A1  - García-Pinillos, Felipe
A1  - Lago-Fuentes, Carlos
A1  - Latorre-Román, Pedro A.
A1  - Pantoja-Vallejo, Antonio
A1  - Ramirez-Campillo, Rodrigo
KW  - Plyometric exercises; Resistance training; Rope jumping; Running; Stretch reflex.
EP  - 933
TI  - Jump-Rope Training: Improved 3-km Time-Trial Performance in Endurance Runners via Enhanced Lower-Limb Reactivity and Foot-Arch Stiffness
ID  - uneatlantico40
VL  - 15
UR  - http://doi.org/10.1123/ijspp.2019-0529
SN  - 1555-0265
Y1  - 2020/03//
N2  - Context: Plyometric training promotes a highly effective neuromuscular stimulus to improve running performance. Jumping rope (JR) involves mainly foot muscles and joints, due to the quick rebounds, and it might be considered a type of plyometric training for improving power and stiffness, some of the key factors for endurance-running performance. Purpose: To determine the effectiveness of JR during the warm-up routine of amateur endurance runners on jumping performance, reactivity, arch stiffness, and 3-km time-trial performance. Methods: Athletes were randomly assigned to an experimental (n?=?51) or control (n?=?45) group. Those from the control group were asked to maintain their training routines, while athletes from the experimental group had to modify their warm-up routines, including JR (2?4 sessions/wk, with a total time of 10?20 min/wk) for 10 weeks. Physical tests were performed before (pretest) and after (posttest) the intervention period and included jumping performance (countermovement-jump, squat-jump, and drop-jump tests), foot-arch stiffness, and 3-km time-trial performance. Reactive strength index (RSI) was calculated from a 30-cm drop jump. Results: The 2?×?2 analysis of variance showed significant pre?post differences in all dependent variables (P?<?.001) for the experimental group. No significant changes were reported in the control group (all P???.05). Pearson correlation analysis revealed a significant relationship between ?3-km time trial and ?RSI (r?=??.481; P?<?.001) and ?Stiffness (r?=??.336; P?<?.01). The linear-regression analysis showed that ?3-km time trial was associated with ?RSI and ?Stiffness (R2?=?.394; P?<?.001). Conclusions: Compared with a control warm-up routine prior to endurance-running training, 10 weeks (2?4 times/wk) of JR training, in place of 5 minutes of regular warm-up activities, was effective in improving 3-km time-trial performance, jumping ability, RSI, and arch stiffness in amateur endurance runners. Improvements in RSI and arch stiffness were associated with improvements in 3-km time-trial performance.
JF  - International Journal of Sports Physiology and Performance
SP  - 927
IS  - 7
ER  -