The Conconi Test - Searching for the Deflection Point

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13430%2F19%3A43895196" target="_blank" >RIV/44555601:13430/19:43895196 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11510/19:10396303

Výsledek na webu

<a href="http://www.physactiv.eu/wp-content/uploads/2019/04/2019_19.pdf" target="_blank" >http://www.physactiv.eu/wp-content/uploads/2019/04/2019_19.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.16926/par.2019.07.19" target="_blank" >10.16926/par.2019.07.19</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Conconi Test - Searching for the Deflection Point

Popis výsledku v původním jazyce

The Conconi Test (CT) is an incremental exercise test characterized by stages of equal intensity. For analysis speed (S) and HR (heart rate) are used. The deflection point of the HR/S graph marks the point where the linear relation between S and HR changes to a curvilinear one. As Conconi stated HR at deflection point represents anaerobic threshold (AT) value. Purpose of this study was to extend our previous research dealing with reliability and validity aspects of CT. Material and Methods: During 10 years (2007-2017) we tested 2 500 subjects using Conconi protocol. Tested were mainly football players and smaller number of runners (long distance and cross country) different ages and fitness level. Some subjects were tested repeatedly during the years. Initial speed of the running treadmill test was determined in the range of 10 to 12 km.h-1, according subjects age and fitness level. Speed was increased gradually every 150 m of 0.5 km.h-1 to the maximum speed when further increases were impossible. HR was recorded at every 150 meters. From a graphical representation dependence HR on increasing running speed we tried to find apparent diversion from the curve of linearity, labeled by Conconi as &quot;deflection point&quot; (DP). Simultaneously respiration values were recorded. From these respiration data we determined the ventilatory threshold (VT2) as a metabolic marker of the onset of blood lactate accumulation. Results: We found 6 types of response HR to increasing speed. a) regular DP; b) linear regression r GREATER-THAN OR EQUAL TO 0.98 - no DP; c) linear regression r &lt; 0.98 - no DP; d) inversion character of deflection point; e) DP not corresponding with value of ANP; f) more than one DP. As an AT predictor compared with VT2, Conconi test overestimated this value (0.5 km.h-1). Conclusion: Using of Conconi test as a predictor of ANP has a limitation. ANP values determined by CT are overestimated (0.5 km.h-1). Test stability of CT is very low and there is evidence that DP is not 100% repeated physiology phenomena.

Název v anglickém jazyce

The Conconi Test - Searching for the Deflection Point

Popis výsledku anglicky

The Conconi Test (CT) is an incremental exercise test characterized by stages of equal intensity. For analysis speed (S) and HR (heart rate) are used. The deflection point of the HR/S graph marks the point where the linear relation between S and HR changes to a curvilinear one. As Conconi stated HR at deflection point represents anaerobic threshold (AT) value. Purpose of this study was to extend our previous research dealing with reliability and validity aspects of CT. Material and Methods: During 10 years (2007-2017) we tested 2 500 subjects using Conconi protocol. Tested were mainly football players and smaller number of runners (long distance and cross country) different ages and fitness level. Some subjects were tested repeatedly during the years. Initial speed of the running treadmill test was determined in the range of 10 to 12 km.h-1, according subjects age and fitness level. Speed was increased gradually every 150 m of 0.5 km.h-1 to the maximum speed when further increases were impossible. HR was recorded at every 150 meters. From a graphical representation dependence HR on increasing running speed we tried to find apparent diversion from the curve of linearity, labeled by Conconi as &quot;deflection point&quot; (DP). Simultaneously respiration values were recorded. From these respiration data we determined the ventilatory threshold (VT2) as a metabolic marker of the onset of blood lactate accumulation. Results: We found 6 types of response HR to increasing speed. a) regular DP; b) linear regression r GREATER-THAN OR EQUAL TO 0.98 - no DP; c) linear regression r &lt; 0.98 - no DP; d) inversion character of deflection point; e) DP not corresponding with value of ANP; f) more than one DP. As an AT predictor compared with VT2, Conconi test overestimated this value (0.5 km.h-1). Conclusion: Using of Conconi test as a predictor of ANP has a limitation. ANP values determined by CT are overestimated (0.5 km.h-1). Test stability of CT is very low and there is evidence that DP is not 100% repeated physiology phenomena.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

30306 - Sport and fitness sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Activity Review

ISSN

2300-5076

e-ISSN

—

Svazek periodika

2019

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

160-167

Kód UT WoS článku

000478771200019

EID výsledku v databázi Scopus

2-s2.0-85071041192