Remember Me
Or use your Academic/Social account:


Or use your Academic/Social account:


You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.


Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message


Verify Password:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Bampouras, Theodoros; Relph, Nicola; Orme, Duncan; Esformes, Joseph (2013)
Publisher: IOS Press
Languages: English
Types: Article
Subjects: Z721, Z722, Z723, Z724
Background: Portable and cost-effective accelerometers can yield instantaneous results of force, power, and velocity, with minimum set-up time to assess muscle power. However, such devices must also produce both valid and reliable data.\ud \ud Objective: The current study assessed the validity and reliability of the Myotest Pro wireless accelerometer (ACC). \ud \ud Methods: Thirty physically active males performed two squat jump, on two separate sessions. The jump was recorded simultaneously by a force platform and ACC, which was attached to a barbell resting on the subjects' shoulders. Validity was determined using Pearson correlation coefficient (r) and t-test between the maximum force platform (F_{FP}) and ACC (F_{ACC}) force. Between session reliability of F_{ACC}, power (P_{ACC}) and velocity (V_{ACC}) from the ACC were assessed with t-test, intraclass correlation coefficient (ICC), and coefficient of variation (CV). \ud \ud Results: F_{ACC} correlated highly to F_{FP} (r=0.815, p< 0.05), but there was a proportionate ratio bias of 0.81. There was no difference between sessions (p> 0.05) for any variable. High ICCs were found for all variables (F_{ACC} 0.90; P_{ACC} 0.80; V_{ACC} 0.84). Low CV was found for F_{ACC} (2.1%), P_{ACC} (3.3%) and V_{ACC} (3.2%). \ud \ud Conclusions: ACC is a valid and reliable tool to use for assessing barbell movement, but caution in power data interpretation is needed.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] Atkinson G, Nevill AM. Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine. Sports Med. 1998; 26(4): 217-238.
    • [2] Bobbert MF, van Soest AJ.Why do people jump the way they do? Exerc Sport Sci Rev. 2001; 29(3): 95-102.
    • [3] Charter RA. Revisiting the standard errors of measurement, estimate and prediction and their application to test scores. Percept Mot Skills. 1996; 82(3): 1139-1144.
    • [4] Cohen J. Statistical power analysis for the behavioral sciences. 2nd ed. Mahwah, NJ: Lawrence Erlbaum; 1988.
    • [5] Comstock BA, Solomon-Hill G, Flanagan SD, Earp JE, Luk HY, Dobbins KA, et al. Validity of theMyotest inmeasuring force and power production in the squat and bench press. J Strength Cond Res. 2011; 25(8): 2293- 2297.
    • [6] Cormack SJ, Newton RU, McGuigan MR, Doyle TL. Reliability of measures obtained during single and repeated countermovement jumps. Int J Sports Physiol Perform. 2008; 3(2): 131-144.
    • [7] Cormie P, McBride JM, McCaulley GO. Power-time, forcetime, and velocity-time curve analysis of the countermovement jump: impact of training. J Strength Cond Res. 2009; 23(1): 177-186.
    • [8] Cormie P, McBride JM, McCaulley GO. Power-time, forcetime, and velocity-time curve analysis during the jumps squat: impact of load. J Appl Biomech. 2008; 24(2): 112-120.
    • [9] Cormie P, McBride JM, McCaulley GO. Validation of power measurement techniques in dynamic lower body resistance exercises. J Appl Biomech. 2007; 23(2): 103-118.
    • [10] Crewther BT, Kilduff LP, Cunningham DJ, Cook C, Owen N, Yang GZ. Validating two systems for estimating force and power. Int J Sports Med. 2011; 32(4): 254-258.
    • [11] Cronin JB, Hing RD, McNair PJ. Reliability and validity of a linear position transducer for measuring jump performance. J Strength Cond Res. 2004; 18(3): 590-593.
    • [12] Drinkwater EJ, Galna B, McKenna MJ, Hunt PH, Pyne DB. Validation of an optical encoder during free weight resistance movements and analysis of bench press sticking point power during fatigue. J Strength Cond Res. 2007; 21(2): 510-517.
    • [13] Dugan EL, Doyle TLA, Humphries B, Hasson CJ, Newton RU. Determining the optimal load for jump squats: a review of methods and calculations. J Strength Cond Res. 2004; 18(3): 668-674.
    • [14] Fleiss JL. Design and analysis of clinical experiments. New York, NY: John Wiley & Sons; 1986.
    • [15] Glatthorn JF, Gouge S, Nussbaumer S, Stauffacher S, Impellizzeri FM, Maffiuletti NA. Validity and reliability of Optojump photoelectric cells for estimating vertical jump height. J Strength Cond Res. 2011; 25(2): 556-560.
    • [16] Hansen KT, Cronin JB, Newton MJ. The reliability of linear position transducer and force plate measurement of explosive force-time variables during a loaded jump squat in elite athletes. J Strength Cond Res. 2011; 25(5): 1447-1456.
    • [17] Hertogh C, Hue O. Jump evaluation of elite volleyball players using two methods: jump power equations and force platform. J Sports Med Phys Fitness. 2002; 42(3): 300-303.
    • [18] Hopkins WG, Schabort EJ, Hawley JA. Reliability of power in physical performance tests. Sports Med. 2001; 31(3): 211-234.
    • [19] Hori N, Newton RU, Kawamori N, McGuigan MR, Kraemer WJ, Nosaka K. Reliability of performance measurements derived from ground reaction force data during countermovement jump and the influence of sampling frequency. J Strength Cond Res. 2009; 23(3): 874-882.
    • [20] Jennings CL, Viljoen W, Durandt J, LambertMI. The reliability of the FitroDyne as a measure of muscle power. J Strength Cond Res. 2005; 19(4): 859-863.
    • [21] Linthorne NP. Analysis of standing vertical jumps using a force platform. Am J Phys. 2001; 69(11): 1198- 1204.
    • [22] Nunnally J, Bernstein I. Psychometric Theory. 3rd ed., New York, NY: McGraw Hill; 1994.
    • [23] Sale DG. Testing strength and power. In: MacDougall JD, Wenger HA, Green HJ, editors. Physiological Testing of the High Performance Athlete. 2nd ed., Champaign, IL: Human Kinetics; 1991; pp. 21-106.
    • [24] Sato K, Smith SL, Sands WA. Validation of an accelerometer for measuring sport performance. J Strength Cond Res. 2009; 23(1): 341-347.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article