Multi Directional Repeated Sprint Is a Valid and Reliable Test for Assessment of Junior Handball Players

Abstract

The aim of the present study was to examine the validity and reliability of a 10 × (6 × 5 m) multi-directional repeated sprint ability test (RSM) in elite young team handball (TH) players. Participants were members of the Iranian national team (n = 20, age 16.4 ± 0.7 years, weight 82.5 ± 5.5 kg, height 184.8 ± 4.6 cm, body fat 15.4 ± 4.3%). The validity of RSM was tested against a 10 × (15 + 15 m) repeated sprint ability test (RSA), Yo-Yo Intermittent Recovery test Level 1 (Yo-Yo IR1), squat jump (SJ) and countermovement jump (CMJ). To test the reliability of RSM, the participants repeated the testing sessions of RSM and RSA 1 week later. Both RSA and RSM tests showed good to excellent reliability of the total time (TT), best time (BT), and weakest time (WT). The results of the correlation analysis showed significant inverse correlations between maximum aerobic capacity and TT in RSA (r = −0.57, p ≤ 0.05) and RSM (r = −0.76, p ≤ 0.01). There was also a significant inverse correlation between maximum aerobic capacity with fatigue index (FI) in RSA test (r = −0.64, p ≤ 0.01) and in RSM test (r = −0.53, p ≤ 0.05). BT, WT, and TT of RSA was largely-to-very largely correlated with BT (r = 0.58, p ≤ 0.01), WT (r = 0.62, p ≤ 0.01), and TT (r = 0.65, p ≤ 0.01) of RSM. BT in RSM was also correlated with FI in RSM (r = 0.88, p ≤ 0.01). In conclusion, based on the findings of the current study, the recently developed RSM test is a valid and reliable test and should be utilized for assessment of repeated sprint ability in handball players.

Convergent validity and reliability of a novel repeated agility protocol in junior rugby league players

“…Finally, the current study identified significant correlations between VO 2max and RIA performance measures. These findings are similar to previous studies using various repeated-COD protocols 28 , 29 as well as RSA protocols 37 – 39 . Measures of VO 2max has been considered essential for repeated-sprint type protocols, due to muscular reoxygenation rate 8 , 40 , optimal capacity to remove and buffer hydrogen ions within working muscles 41 and efficiently replenish phosphagen stores 42 .…”

“…However, the measurement error was substantially higher for FI, confirming previous studies that reported substantially stronger reliability measures for BT, TT and AT compared to that of FI from various repeated-COD protocols 7 , 8 , 28 . It has been suggested that FI may exhibit weaker reproducibility as the measure is multifactorial and dependent on the stability of other variables (i.e., TT and BT) 7 , 29 . Subsequently, we, and others 7 , 8 , 28 , 29 , recommend that time-derived measures be primarily evaluated during repeated-COD protocols.…”

“…It has been suggested that FI may exhibit weaker reproducibility as the measure is multifactorial and dependent on the stability of other variables (i.e., TT and BT) 7 , 29 . Subsequently, we, and others 7 , 8 , 28 , 29 , recommend that time-derived measures be primarily evaluated during repeated-COD protocols.…”

Prediction of track performance in competitive BMX riders using laboratory measures

“…The CMJ started with an upright standing position with hands unrestricted. The participants were encouraged to bend their knees to approximately 90• and use their arm to achieve the maximum height with no delay at their lowest position (Daneshfar et al, 2018). After a standardized warm-up of 2-3 repetitions of both SJ and CMJ, participants were asked to perform three jumps with a passive recovery of 1-min in between each jump.…”

Body Composition and Postural Stability in Goalkeepers of the Polish National Junior Handball Team

“…The higher the body mass, the lower the centre of gravity, and the greater the support area, the more stable the standing position. The problem of dynamic stability is different [15][16][17]. Recovering lost stability requires much more efficiency of the muscular system.…”