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The Countermovement Jump Mechanics of Mixed Martial Arts Competitors
- Source :
- Journal of Strength and Conditioning Research. 34:982-987
- Publication Year :
- 2020
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2020.
-
Abstract
- James, LP, Connick, M, Haff, GG, Kelly, VG, and Beckman, EM. The countermovement jump mechanics of mixed martial arts competitors. J Strength Cond Res 34(4): 982-987, 2020-Gross countermovement jump (CMJ) performance measures are greater in higher-level mixed martial arts (MMA) competitors than lower-level (LL) competitors. Differences in CMJ kinetics and kinematics throughout the action may explain those CMJ performance differences, but this remains to be investigated. After warm-up and familiarization, 27 MMA competitors (divided into 2 groups based on competitive standard; higher level [HL]: n = 14 and LL: n = 13) completed 3 maximal effort CMJs. Power, force, velocity, displacement-time waveforms and eccentric phase displacement, eccentric time, eccentric impulse, and the modified reactive strength index (RSImod) were compared between groups using statistical parametric mapping procedures and independent t-tests. Power (between 65 and 71% of the power-time curve) was greater in the HL than that of the LL group (p = 0.01) despite no differences in eccentric displacement (p = 0.50) or movement time (p = 0.17) between groups. The HL group demonstrated a greater RSImod (p = 0.05) alongside a reduced eccentric time (p = 0.02) and eccentric impulse (p = 0.02). These findings suggest that timing and control of lower-body force production contributed to between-group differences in CMJ performance among MMA competitors.
- Subjects :
- Adult
Male
Martial arts
Warm-Up Exercise
Movement
Physical Therapy, Sports Therapy and Rehabilitation
030229 sport sciences
General Medicine
Mechanics
Athletic Performance
030204 cardiovascular system & hematology
Biomechanical Phenomena
Young Adult
03 medical and health sciences
0302 clinical medicine
Phase displacement
Countermovement jump
Humans
Eccentric
Orthopedics and Sports Medicine
Muscle Strength
Muscle, Skeletal
Martial Arts
Mathematics
Subjects
Details
- ISSN :
- 10648011
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Journal of Strength and Conditioning Research
- Accession number :
- edsair.doi.dedup.....435bd9372b9f55073e5f4fab969343da