APPLIED
EXERCISE PHYSIOLOGYDYNAMICS
OF PARAMETER CHANGES OF
LUNG VENTILATION DURING DIFFERENT EFFORT IN KARATE AND ORIENTEERING
S.Đorđević-Šaranović,
N.Antić, J.Zlatković, M.Zlatković, J.Plavši
Republic Institute of
Sport, Belgrade, Serbia
In this prospective study
values of parameters of respiratory functions were observed –
Lung ventilation, VE, with subjects training different sports: karate
and orienteering. VE – minute values of lung
ventilation is the amount of gas expired per minute. From a
resting value of about 6.0 L/min, the ventilation increases to 100, 150
and in extreme cases, 200 L/min).
The aim of the
performed analyses was to notice dynamics of changes in
values of parameters VE of lungs during the observed measuring periods
between the two observed groups of subjects training different sports,
(bifactorial analyses variance was used at repeated measurement) as
well as changes of (observed) parameters during the subject exposition
to the effort, within each group. Period of measurement in this model
was given as a factor within the group and factor of training of
different sports was a factor of difference between observed groups of
subjects.
Forty-eight athletes (juniors, mixed gender group)
were observed, twenty-four from each group using spiroergometric test
on treadmill, by direct method, as to Vita maxima protocol. Values of
these parameters were observed in four different periods depending on
subjects’ exposition to the effort: before, during, at the
maximal and three minutes after the effort.
Before
testing no statistically significant difference in VE values, between
karate and orienteering subjects (t-test; p=0.936) was
noticed. At the optimal effort they are a bit higher, but not
statistically significant values within a group of karate athletes
(t-test;p=0.610).
Analyzing the difference statistically
significant increase of VE values during the subjects exposure to
optimal effort was noticed, then statistically significant increase at
exposure to maximal effort and statistically significant fall 3 minutes
after the exposure to the effort. At the period of maximal exposure to
the effort, values of VE measured within a group of orienteering were a
bit higher (t-test;p=0.372).
Statistically significant
difference in VE values was noticed three minutes after exposure to the
effort.
Analyzing the difference in volume between
subjects training karate and orienteering significant difference in VE
values during the observed measurement periods was noticed (bifactorial
analyses variance at repeated measurements, measurement period factor*
kind of sport; p=0.049).
Statistically significant difference
was noticed in the VE values measured during different measurement
periods within both group of subjects (Bifactorial analyses variance,
measurement period factor; p=0.000). Analyzing the difference
statistically significant higher values of these parameters were
noticed within orienteering subjects.
Key words: respiratory
function, VE, karate and orienteering.
