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Is V̇O2peak a Valid Estimation of V̇O2max in Swimmers with Physical Impairments?
Res Q Exerc Sport 2019; :1-11RQ

Abstract

Purpose:

Peak and maximal oxygen uptake ([Formula: see text] and [Formula: see text], respectively) are used in assessing aerobic power. For swimmers with physical impairments, it is unclear whether the physiological variables obtained in 200-m and Nx200-m tests are similar. The objective of this study is to assess the validity of [Formula: see text] as an estimator of [Formula: see text] and complementary physiological variables, in particular, carbon dioxide production ([Formula: see text]), respiratory exchange ratio (RER), minute-ventilation ([Formula: see text] and absolute (HR) and relative (%HRmax) heart rates-which were obtained in a time trial test (200-m) and an incremental intermittent test (Nx200-m) performed by swimmers with physical impairments.

Methods:

Eleven well-trained swimmers with physical impairments performed 200-m all-out and Nx200-m from low to all-out (controlled by a visual pacer), both with a respiratory valve system and a portable gas analyzer.

Results:

A paired Student's t-test showed no statistical difference (p > .05) for all comparisons. The intraclass correlation coefficient (ICC) was 0.97 and 0.98 for [Formula: see text] in l/min and ml/kg/min, respectively; ICC = 0.75 to 0.9 for [Formula: see text] (l/min and ml/kg/min),[Formula: see text] (in l/min) and HR (beats/min); ICC = 0.5 and 0.75 for %HRmax; and ICC < 0.5 for RER. Passing-Bablok regression showed that the dispersions were acceptable, considering the proportionality, except for HR and %HRmax. Bland-Altman method showed a high level of agreement for all variables.

Conclusions:

The [Formula: see text] and [Formula: see text], as well as the physiological variables [Formula: see text] and HR obtained, respectively, by 200-m and Nx200-m tests in swimmers with physical impairment were not different.

Authors+Show Affiliations

Universidade Federal do Rio Grande do Sul. Universidade Estadual do Ceará.Nanyang Technological University. Polytechnic Institute of Bragança. Research Centre in Sports Health and Human Develop.Universidade Federal do Rio Grande do Sul.Universidade Federal do Rio Grande do Sul.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31718516

Citation

Feitosa, Wellington G., et al. "Is V̇O2peak a Valid Estimation of V̇O2max in Swimmers With Physical Impairments?" Research Quarterly for Exercise and Sport, 2019, pp. 1-11.
Feitosa WG, Barbosa TM, Correia RA, et al. Is V̇O2peak a Valid Estimation of V̇O2max in Swimmers with Physical Impairments? Res Q Exerc Sport. 2019.
Feitosa, W. G., Barbosa, T. M., Correia, R. A., & Castro, F. A. S. (2019). Is V̇O2peak a Valid Estimation of V̇O2max in Swimmers with Physical Impairments? Research Quarterly for Exercise and Sport, pp. 1-11. doi:10.1080/02701367.2019.1660758.
Feitosa WG, et al. Is V̇O2peak a Valid Estimation of V̇O2max in Swimmers With Physical Impairments. Res Q Exerc Sport. 2019 Nov 13;1-11. PubMed PMID: 31718516.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Is V̇O2peak a Valid Estimation of V̇O2max in Swimmers with Physical Impairments? AU - Feitosa,Wellington G, AU - Barbosa,Tiago M, AU - Correia,Ricardo de A, AU - Castro,Flávio A de S, Y1 - 2019/11/13/ PY - 2019/11/14/entrez PY - 2019/11/14/pubmed PY - 2019/11/14/medline KW - Paralympic swimming physiology KW - Validation KW - incremental protocol KW - time trial test SP - 1 EP - 11 JF - Research quarterly for exercise and sport JO - Res Q Exerc Sport N2 - Purpose: Peak and maximal oxygen uptake ([Formula: see text] and [Formula: see text], respectively) are used in assessing aerobic power. For swimmers with physical impairments, it is unclear whether the physiological variables obtained in 200-m and Nx200-m tests are similar. The objective of this study is to assess the validity of [Formula: see text] as an estimator of [Formula: see text] and complementary physiological variables, in particular, carbon dioxide production ([Formula: see text]), respiratory exchange ratio (RER), minute-ventilation ([Formula: see text] and absolute (HR) and relative (%HRmax) heart rates-which were obtained in a time trial test (200-m) and an incremental intermittent test (Nx200-m) performed by swimmers with physical impairments. Methods: Eleven well-trained swimmers with physical impairments performed 200-m all-out and Nx200-m from low to all-out (controlled by a visual pacer), both with a respiratory valve system and a portable gas analyzer. Results: A paired Student's t-test showed no statistical difference (p > .05) for all comparisons. The intraclass correlation coefficient (ICC) was 0.97 and 0.98 for [Formula: see text] in l/min and ml/kg/min, respectively; ICC = 0.75 to 0.9 for [Formula: see text] (l/min and ml/kg/min),[Formula: see text] (in l/min) and HR (beats/min); ICC = 0.5 and 0.75 for %HRmax; and ICC < 0.5 for RER. Passing-Bablok regression showed that the dispersions were acceptable, considering the proportionality, except for HR and %HRmax. Bland-Altman method showed a high level of agreement for all variables. Conclusions: The [Formula: see text] and [Formula: see text], as well as the physiological variables [Formula: see text] and HR obtained, respectively, by 200-m and Nx200-m tests in swimmers with physical impairment were not different. SN - 2168-3824 UR - https://www.unboundmedicine.com/medline/citation/31718516/Is_V̇O2peak_a_Valid_Estimation_of_V̇O2max_in_Swimmers_with_Physical_Impairments L2 - http://www.tandfonline.com/doi/full/10.1080/02701367.2019.1660758 DB - PRIME DP - Unbound Medicine ER -