Ratings of perceived exertion (RPE) from a submaximal 20-m shuttle-run test accurately predict children's VO 2peak , but when should we stop the test?

Autor: Kasai D; Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, City East Campus, Cnr of North Terrace & Frome Rd, Adelaide, SA, 5001, Australia. Daiki.Kasai@mymail.unisa.edu.au., Tsiros MD; Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, City East Campus, Cnr of North Terrace & Frome Rd, Adelaide, SA, 5001, Australia.; Innovation, Implementation and Clinical Translation in Health (IIMPACT), University of South Australia, City East Campus, Cnr of North Terrace & Frome Rd, Adelaide, SA, 5001, Australia., Eston R; Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, City East Campus, Cnr of North Terrace & Frome Rd, Adelaide, SA, 5001, Australia., Parfitt G; Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, City East Campus, Cnr of North Terrace & Frome Rd, Adelaide, SA, 5001, Australia.
Jazyk: angličtina
Zdroj: European journal of applied physiology [Eur J Appl Physiol] 2024 Sep 30. Date of Electronic Publication: 2024 Sep 30.
DOI: 10.1007/s00421-024-05618-9
Abstrakt: Purpose: The purpose of the study was to explore the validity, test-retest reliability and affective responses of a submaximal 20-m shuttle-run test (20mSRT) stopped at 6 on the Eston-Parfitt (EP) scale. The secondary aim was to examine and compare two submaximal 20mSRT protocols with different RPE end points (EP6 vs. EP7) using previously published data.
Methods: Twenty-five children (16 boys; 13.4 ± 1.0 years; 162.1 ± 8.7 cm; 49.1 ± 6.6 kg) completed three exercise tests (graded exercise test [GXT], 2 submaximal 20mSRT). The EP scale and Feeling scale were used to measure RPE and affect, respectively. The two submaximal 20mSRTs were stopped after participants reported EP6. Individual speed-RPE relationships from the submaximal 20mSRTs were linearly regressed to predict peak speed and then used to estimate VO 2peak . Previously published data (n = 25) used comparable methods, except that the participants stopped at EP7.
Results: In the EP6 protocol, a two-factor repeated measures ANOVA revealed non-significant Test and Sex main effects (p > 0.05). Reliability analysis revealed intraclass correlation coefficient of ~ 0.7 (95%CI [0.432,0.867], p < 0.001) between the submaximal 20mSRTs. Significant differences in end-test affect between the GXT and submaximal 20mSRTs were found (p < 0.001), with GXT more negative. ANOVA revealed no significant differences in end-test affect between EP6 and EP7 protocols; however, frequency count analysis revealed EP6 to result in more positive end-test affect.
Conclusion: Submaximal 20mSRT utilising RPE may offer valid predictions in VO 2peak while minimising negative affect. Test end points of EP6 and EP7 both offer valid predictions in VO 2peak . EP6 may be more beneficial in avoiding negative affect, even though a reduction in test-retest reliability was observed.
(© 2024. The Author(s).)
Databáze: MEDLINE
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