Validity, reliability, and usefulness of jump performance from a low-cost contact mat


  • Haris Pojskic Linnaeus University, Sweden
  • Emmanuel Ver Papa University of the Philippines - Diliman, Philippines
  • Sam Shi Xuan Wu Swinburne University, Australia
  • Jeffrey Cayaban Pagaduan University of Tasmania, Australia



Vertical jump, Contact mat, Countermovement jump, Squat jump


The purpose of this study was to establish the validity, reliability, and usefulness of a low-cost contact mat equipment (CM) with a force plate (FP) as the reference. Eleven female (18.6 ± 3.67 yrs.) and male (18.2 ± 2.71 yrs.) basketball athletes performed hands-on-waist countermovement jump (CMJ) and squat jump (SJ) trials. Flight time (FT) and jump height (JH) in CMJ and SJ were subjected for analysis. Relative error expressed as percentage (%RE) was utilized to examine criterion validity between CM and FP. Concurrent validity was also established using Pearson moment correlation (r). Absolute reliability was determined using coefficient of variation (%CV). Relative reliability was identified using intra-class correlation coefficient (ICC). Usefulness was established by comparing typical error (TE) vs. smallest worthwhile change (SWC). Results revealed that CMJ and SJ from a low-cost CM can be used as an alternative tool in assessment of jump performance.


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Abbiss, C.R., Quod, M.J., Levin, G., Martin, D.T., & Laursen, P.B. (2009). Accuracy of the Velotron ergometer and SRM power meter. International Journal of Sports Medicine 30(2): 107-112.

Abdelkrim, N.B., Chaouachi, A., Chamari, K., Chtara, M., & Castagna, C. (2010). Positional role and competitive-level differences in elite-level men’s basketball players. Journal of Strength and Conditioning Research 24(5): 1346-1355.

Aragón-Vargas, L.F. (2000). Evaluation of four vertical jump tests: methodology, reliability, validity, and accuracy. Measurement in Physical Education and Exercise Science 4(4): 215-22.

Atkinson, G., Nevill, A., & Edwards, B. (1999). What is an acceptable amount of measurement error? The application of meaningful ‘analytical goals’ to the reliability of sports science measurements made on a ratio scale. Journal of Sports Sciences 17: 18.

Attia, A., Dhahbi, W., Chaouachi, A., Padulo, J., Wong, D.B., & Chamari, K. (2017). Measurement errors when estimating the vertical jump height with flight time using photocell devices: the example of Optojump. Biology in Sport 34(1): 63-70.

Balsalobre-Fernandez, C., Glaister, M., & Lockey, R.A. (2015). The validity and reliability of an iPhone app for measuring vertical jump performance. Journal of Sports Sciences 33(15): 1574-1479.

Baumgart, C., Honisch, F., Freiwald, J., & Hoppe, M.W. (2017). Differences and trial-to-trial reliability of vertical jump heights assessed by ultrasonic system, force-plate, and high-speed video analyses. Asian Journal of Sports Medicine 8(4): e12921.

Borges Júnior, N.G., Borges, L., Dias, J.A., Wentz, M.D., Mattos, D.J.dS., Petry, R., & Domenech, S.C. (2011). Validity of a new contact mat system for evaluating vertical jump. Motriz: Revisita de Educação Física 17(1): 26-32.

Bosco, C., Luhtanen, P., & Komi, P.V. (1983). A simple method for measurement of mechanical power in jumping. European Journal of Applied Physiology 50(2), 273-282.

Bruton, A., Conway, J.H., & Holgate, S.T. (2000). Reliability: what is it, and how is it measured? Physiotherapy 86(2): 94-99.

Buckthorpe, M., Morris, J., & Folland, J.P. (2012). Validity of vertical jump measurement devices. Journal in Sports Sciences 30(1), 63-69.

Clark, A., Bryant, A.L., & Reaburn, P. (2006) The acute effects of a single set of contrast preloading on a loaded countermovement jump training session. Journal of Strength and Conditioning Research 20(1): 162-166.

Cordova, M.L., & Armstrong, C.W. (1996). Reliability of ground reaction forces during a vertical jump: implications for functional strength assessment. Journal of Athletic Training 31(4): 342-345.

Cronin, J.B., Hing, R.D., & McNair, P.J. (2004). Reliability and validity of a linear position transducer for measuring jump performance. Journal of Strength and Conditioning Research 18(3): 590-593.

Delextrat, A., & Cohen, D. (2008). Physiological testing of basketball players: toward a standard evaluation of anaerobic fitness. Journal of Strength and Conditioning Research, 22(4): 1066-1072.

DeVellis, R.F. (2016). Scale Development: Theory and Applications (pp. 31-58). Thousand Oaks, CA: SAGE Publications.

Dias, J.A., Dal Pupo, J., Reis, D.C., Borges, L., Santos, S.G., Moro, A.R., Borges Jr, N.G. (2011). Validity of two methods for estimation of vertical jump height. Journal of Strength and Conditioning Research 25(7): 2034-2039.

Enoksen, E., Tønnessen, E., & Shalfawi, S. (2009). Validity and reliability of the Newtest Powertimer 300-series® testing system. Journal of Sports Sciences 27(1): 77-84.

Ferreira, L.C., Schilling, B.K., Weiss, L.W., Fry, A.C., & Chiu, L.Z.F. (2010). Reach height and jump displacement: implications for standardization of reach determination. Journal of Strength and Conditioning Research 24(6): 1596-1601.

García-López, J.. Morante, J.C., Ogueta-Alday, A., & Rodríguez-Marroyo, J.A. (2013). The type of mat (contact vs. photocell) affects vertical jump height estimated from flight time. Journal of Strength and Conditioning Research24(7): 1162-1167.

García-López , J., Peleteiro, J., Rodgríguez-Marroyo, J.A., Morante, J.C., Herrero, J.A., & Villa, J.G. (2005). The validation of a new method that measures contact and flight times during vertical jump. International Journal of Sports Medicine 26(4): 294-302.

Hatze, H. (1998). Validity and reliability of methods for testing vertical jumping performance. Journal of Applied Biomechanics 14(2): 127-140.

Hopkins, W.G. (2007). Understanding statistics by analyzing spreadsheets to generate and analyze samples. Sportscience 11: 23-26.

Hopkins, W.G. (2004). How to interpret changes in an athletic performance test. Sportscience 8: 1-7.

Hopkins, WG. (2000). Measures of reliability in sports medicine and science. Sports Medicine 30(1), 1-15.

Hopkins, W.G., Marshall, S.W., Batterham, A.M., & Hanin, J. (2009). Progressive statistics for studies in sports medicine and exercise science. Medicine and Science in Sports and Exercise 41(3): 3-13.

Kenny, I.C., Cairealláin, A.Ó., Comyns, T.M. (2012). Validation of an electronic jump mat to assess stretch-shortening cycle function. Journal of Strength and Conditioning Research 26(6): 1601-1608.

Kibele, A. (1998). Possibilities and limitations in the biomechanical analysis of countermovement jumps: a methodological study. Journal of Applied Biomechanics 14(1): 105-117.

Learner J., & Goodman, N.W. (1996). Descriptions of correlation. Lancet 348(9021), 199-200.

Malone, J.J., Murtagh, C.F., Morgans, R., Burgess, D.J., Morton, J.P., & Drust, B. (2015). Countermovement jump performance is not affected during an in-season training microcycle in elite youth soccer players. Journal of Strength and Conditioning Research 29(3): 752-757.

Markovic, G., Dizdar, D., Jukic, I., & Cardinale, M. (2004). Reliability and factorial validity of squat and countermovement jump tests. Journal of Strength and Conditioning Research 18(3): 551-555.

McLean, B.D., Coutts, A.J., Kelly, V., McGuigan, M.R., & Cormack, S.J. (2010). Neuromuscular, endocrine, and perceptual fatigue responses during different length between-match microcycles in professional rugby league players. International Journal of Sports Physiology and Performance 5(3): 367-383.

McMahon, J.J., Jones, P.A., & Comfort, P. (2016). A correction equation for jump height measured using the just jump system. International Journal of Sports Physiology and Performance 11(4): 555-557.

Moir, GL. (2008). Three different methods of calculating vertical jump height from force platform data in men and women. Measurement in Physical Education and Exercise Science 12(4): 207-218.

Moir, G., Shastri, P., & Connaboy, C. (2008). Intersession reliability of vertical jump height in women and men. Journal of Strength and Conditioning Research 22(6): 1779-1784.

Nuzzo, J.L., Anning, J.H., & Scharfenberg, J.M. (2011). The reliability of three devices used for measuring vertical jump height. Journal of Strength and Conditioning Research 25(9): 2580-2590, 2011.

Ostojic, S.M., Mazic, S., & Dikic, N. (2006). Profiling in basketball: physical and physiological characteristics of elite players. Journal of Strength and Conditioning Research 20(4): 740-744.

Pojskić, H., Šeparović, V., Užičanin, E., Muratović, M., & Mačković, S. (2015). Positional role differences in the aerobic and anaerobic power of elite basketball players. Journal of Human Kinetics, 49: 219-227.

Pojskic, H., Sisic, N., Separovic, V., Sekulic, D. (2018). Association between conditioning capacities and shooting performance in professional basketball players: an analysis of stationary and dynamic shooting skills. Journal of Strength and Conditioning Research 32(7): 1981-1992.

Pyne, D., Hopkins, W., Batterham, A., Gleeson, M., Fricker, P. (2005). Characterising the individual performance responses to mild illness in international swimmers. British Journal of Sports Medicine 39: 752-756.

Reeve, T.C., & Tyler, C.J. (2013). The validity of the SmartJump contact mat. Journal of Strength and Conditioning Research 27(6): 1597-1601.

Rogan, S., Radlinger, L., Imhasly, C., Kneubuehler, A., & Hilfiker, R. (2015). Validity study of a jump mat compared to the reference standard force plate. Asian Journal of Sports Medicine 6(4): e25561.

Sallet, P., Perrier, D., Ferret, J., Vitelli, V., & Baverel, G. (2005). Physiological differences in professional basketball players as a function of playing position and level of play. The Journal of Sports Medicine and Physical Fitness 45(3): 291-294.

Street, G., McMillan, S., Board, W., Rasmussen, M., & Heneghan, J.M. Sources of error in determining countermovement jump height with the impulse method. Journal of Applied Biomechchanics 17(1): 43-54.

Thorpe, R.T., Strudwick, A.J., Buchheit, M., Atkinson, G., Drust, B., & Gregson, W. (2015). Monitoring fatigue during the in-season competitive phase in elite soccer players. International Journal of Sports Physiology and Performance 10(8): 958-964.

Walsh, M.S., Ford, K.R., Bangen, K.J., Myer, G.D., Hewett, T.E. (2006). The validation of a portable force plate for measuring force-time data during jumping and landing tasks. Journal of Strength and Conditioning Research 20(4): 730-734.

Weir, J.P. (2005). Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM. Journal of Strength and Conditioning Research 19(1): 231-240.

Whitmer, T.D., Fry, A.C., Forsythe, C.M., Andre, M.J., Lane, M.T., Hudy, A., & Honnold, D.E. (2015). Accuracy of a vertical jump contact mat for determining jump height and flight time. Journal of Strength and Conditioning Research 29(4): 877-881.

Ziv, G., & Lidor, R. (2010). Vertical jump in female and male volleyball players: A review of observational and experimental studies. Scandinavian Journal of Medicine and Science in Sports, 20(4): 556-567.


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How to Cite

Pojskic, H., Papa, E. V., Wu, S. S. X., & Pagaduan, J. C. (2022). Validity, reliability, and usefulness of jump performance from a low-cost contact mat. Journal of Human Sport and Exercise, 17(2), 261–271.



Sport Medicine, Nutrition & Health