Validity and Reliability of New Field Aerobic Karate Specific Test (KST) for Karatekas.
Tabben M Montassar Tabben)1, Coquart J, Chaabène H Helmi Chaabane), Franchini E, Chamari K, Tourny C.
This study determined the validity and the reliability of a new specific field test that was based on the scientific data that exist within the latest literature research.
Seventeen international level karatekas participated in this study: 14 men (age: 24.1±4.6 years, body mass: 65.7±10.8 kg) and 3 women (age: 19±3.6 years, body mass: 54.1±0.9 kg). All performed the new karate specific test (KST) two times (test and retest sessions were carried out on separated occasions one week apart). Thirteen men performed also a laboratory test for assessing maximal oxygen uptake (VO2max).
Test-retest results showed the KST to be reliable. VO2peak, Peak heart rate (HRpeak), blood lactate ([La-]), rating of perceived exertion (RPE), and time to exhaustion (TE) did not display a difference between the test and the retest. The SEM and ICC for relative and absolute VO2peak, and TE were <5% and >0.90, respectively. Significant correlations were found between VO2peak (mL.kg-1.min-1) and TE measured from the KST (r=0.71, 95%CI: 0.35-0.88,p<0.0001). There was also no significant difference between VO2peak measured from the KST and VO2max recorded from the cyclo-ergometer laboratory test (55.1±4.8 vs 53.2±6.6 mL.kg-1.min-1, respectively) (t=-1.85, df=12, p=0.08, dz=0.51 [small]). The Bland and Altman analyses reported a mean difference (bias) ± the 95% limits of agreement of 1.9±7.35 mL.kg-1.min-1.
This study showed that the new KST test, with effort pattern replicating real karate combats, can be considered as a valid and reliable karate specific field test for assessing the endurance fitness of karatekas.