Comparing several equations that predict peak VO2 using the 20-m multistage-shuttle run-test in 8–10-year-old children

Abstract

This study compared the validity of reported equations as predictors of peak VO(2) in 8-10-year-old children. Participants (90 boys and girls aged 8-10 years) performed the multistage-shuttle-run-test (MSRT) and peak VO(2) was measured in field using a portable gas analyser. The equations that estimated peak VO(2) from the MSRT performance were chosen according to the age range of this study. As follows, the FITNESSGRAM reports and the equations of Leger et al. (Can J Appl Sport Sci 5: 77-84, 1988), Barnett et al. (Pediatr Exerc Sci 5:42-50, 1993), Matsuzaka et al. (Pediatr Exerc Sci 16:113-125, 2004) and Fernhall et al. (Am J Ment Retard 102:602-612, 1998) were used to estimate the peak VO(2) and compared with the directly measured value. The equation of Leger et al. (Can J Appl Sport Sci 5: 77-84, 1988) provided a mean difference (d) of 4.7 ml kg(-1) min(-1) and a 1.0 slope. The equation of Matsuzaka et al. (Pediatr Exerc Sci 16:113-125, 2004)(a) using maximal speed (MS) showed a higher d (5.4) than the remaining using total laps d (4.2). The equation of Barnett et al. (Pediatr Exerc Sci 5:42-50, 1993)(a) that includes triceps skinfold and MS showed the highest d (6.1) but the smallest range (24.1) and slope (0.6). Data from the FITNESSGRAM had the smallest d (1.8 ml kg(-1) min(-1)), but also had the highest range between limits of agreement (28.6 ml kg(-1) min(-1)) and a 1.2 slope. The lowest slope (0.4) and range (22.2 ml kg(-1) min(-1)) were observed using the equation of Fernhall et al. (Am J Ment Retard 102:602-612, 1998). Log transformation of the data revealed that the equations of Matsuzaka et al. (Pediatr Exerc Sci 16:113-125, 2004)(a) (1.1*/÷1.25) and Fernhall et al. (Am J Ment Retard 102:602-612, 1998) (1.17*/÷1.25) showed the closest agreement among all, but they still yield unsatisfactory accuracy.

International normative 20 m shuttle run values from 1 142 026 children and youth representing 50 countries

“…It is an excellent tool for population-based surveillance and monitoring because it demonstrates strong-to-very strong test–retest reliability, and moderate-to-strong validity 20. The 20mSRT also has excellent field-based utility due to its low cost, flexibility with testing locations (indoors, outdoors, smaller spaces) and its ability to test multiple individuals simultaneously with minimal equipment and personnel 20 24 25. In order to extend the utility of the 20mSRT as a surveillance instrument, there is a need for international norms, which, to date, have only been published for a single 20mSRT metric or for selected geographical regions,20 including Europe,26 North America27 and Oceania 28.…”

Pre-AdolescentCardio-MetabolicAssociations andCorrelates: PACMAC methodology and study protocol

“…Cardiorespiratory fitness will be estimated using the 20 m maximal multistage shuttle run test (20-MST), a reliable and valid test which requires limited facilities 13. The results are recorded as laps taken until exhaustion.…”

The Ability of the PACER to Elicit Peak Exercise Response in the Youth

“…Voss and Sandercock (28) reported that the PACER elicits a maximal effort in 11-to 16-yr olds, evidenced by HR peak . McVeigh et al (16) compared the HR peak achieved during the PACER (boys = 203 beatsImin j1 ; girls = 201 beatsImin j1 ) to a treadmill GXT (boys = 200 beatsImin j1 ; girls = 204 beatsImin j1 ) in 13-to 14-yr-old youths.Currently, only three studies (15,17,24) involving the youth have used portable gas analyzers to obtain measured V O 2peak values during the PACER. In the studies conducted by Ruiz et al (24) and Melo et al (17), the V O 2peak was…”

“…Currently, only three studies (15,17,24) involving the youth have used portable gas analyzers to obtain measured V O 2peak values during the PACER. In the studies conducted by Ruiz et al (24) and Melo et al (17), the V O 2peak was…”

“…Currently, only three studies (15,17,24) involving the youth have used portable gas analyzers to obtain measured V O 2peak values during the PACER. In the studies conducted by Ruiz et al (24) and Melo et al (17), the V O 2peak was measured while the participants performed the PACER test for comparison against predicted values; however, these assessments were not compared with the values from a treadmill GXT.…”