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ULTIMO FASCICOLOTHE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

Rivista di Medicina, Traumatologia e Psicologia dello Sport


Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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The Journal of Sports Medicine and Physical Fitness 1999 Settembre;39(3):202-6

 ORIGINAL ARTICLES

Repro­du­cibil­ity of the oxy­gen ­uptake effi­cien­cy ­slope in nor­mal ­healthy sub­jects

Baba R., Kubo N., Morotome Y., Iwagaki S.

Tokai Uni­ver­sity ­School of Phys­i­cal Edu­ca­tion and ­Research Insti­tute of ­Sports Med­i­cine, Hirat­su­ka, Kan­a­gawa, ­Japan

Back­ground. To elu­ci­date the inter­test agree­ment of the oxy­gen ­uptake effi­cien­cy ­slope (­OUES) in com­par­i­son ­with ­those of the max­i­mal oxy­gen ­uptake (V.O2max) and the ven­til­a­to­ry anaer­o­bic thresh­old (VAT).
Meth­ods. Experi­men­tal ­design: A com­par­a­tive ­study. Set­ting: Insti­tu­tion­al prac­tice. A ­total of 19 ­healthy vol­un­teers under­went two ses­sions of max­i­mal exer­cise test­ing ­with an inter­val of no ­more ­than 7 ­days. The test­ing was con­duct­ed on a ­cycle ergom­e­ter ­with the ­work ­rate ­increased by ­either 20, 30, or 40 ­Watts (W)/min so ­that the sub­ject ­would ­reach exhaus­tion with­in 9 to 12 min of exer­cise. VAT was ­defined as the lev­el of oxy­gen ­uptake (V.O2) at ­which ­either an ­increase in the ven­til­a­to­ry equiv­a­lent for oxy­gen with­out a con­com­i­tant ­increase in the ven­til­a­to­ry equiv­a­lent for car­bon diox­ide or a ­change in the ­slope of the lin­e­ar rela­tion­ship ­between car­bon-diox­ide pro­duc­tion (V.CO2) and V.O2 ­occurred. ­OUES was deter­mined by the fol­low­ing equa­tion: V.O2=a log­V.E+b, ­where V.E was min­ute ven­ti­la­tion and “a” was the ­OUES. Inter­test repro­du­cibil­ity was ­assessed by coef­fi­cient of repeat­abil­ity (COR).
­Results. The inter­test repro­du­cibil­ity of V.O2max and ­OUES ­were excel­lent (COR=570 ml/min [16%] and 740 [20%], respec­tive­ly). VAT ­showed ­poor agree­ment ­between the two ­tests (COR=650 ml/min [31%]).
Con­clu­sions. ­Results ­show ­that ­OUES is repro­du­cible and reli­able, sup­port­ing the clin­i­cal use­ful­ness of ­this ­index.

lingua: Inglese


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