Hubungan vo2max dengan kecepatan pemulihan asam laktat setelah latihan fisik submaksimal

Dita Yuliastrid,

Ilmu Keolahragaan
Vol 8, No 1 (2013)

Abstract
:VO2 reflects one’s fitness level as a capital for a good
athlete besides motivation and basic movement. A high VO2 max can
inhibits fatigue caused by accumulated lactic acid in blood. The purpose of
this research is to find out the correlation between VO2 max and the
velocity of lactate acid recovery after sub maximum physical exercise. The
samples were 20 people, divided into two groups, each groups consisted of 10
persons. The first group (untrained) had VO2 max 35-40 ml/kg/min and
the second (trained) had 55-60 ml/kg/min. Both groups did sub maximum physical
exercise (85% HRM) using ergocycle. The blood lactic acid level was taken as
the data from the fingertips three times; before the exercise, after 5 minutes
and 15 minutes recovery. The average of group 1’s initial lactic acid was 1.86
± 0.1955 mMol/l and group 2 was 1.55 ± 0.2014 mMol/l; the average lactic acid
after 5 minutes recovery of group 1 was 6.61 ± 0.4408 mMol/l and group 2 was
5.62 ± 0.3994  mMol/l; after 15 minutes
recovery, group 1 was 5.96 ± 0.568 mMol/l and group 2 was 2.85± 0.7821 mMol/l.
The average decrease of group 1’s lactic acid was 0.650 ± 0.369 mMol/l and
group 2 was 2.770 ± 0.693   mMol/l. The
pace of group 1’s lactate decrease was 
6.5x10-2 ± 3.69 x 10-2 mMol/l minutes and group 2 was 0.277 ± 6.93 x
10-2 mMol/lminutes. The result of ANAVA univariate test showed that the
difference of the lactic acid decrease and the recovery pace between group 1
and 2 was very significant (p<0.05) and R Square value was 0,836. There was
corelation between VO2 max and the velocity of lactic acid recovery
after sub maximum physical exercises ;and the recovery of blood lactic acid
level after sub maximum physical exercise was faster in a group with 55-60
ml/kg/min of  VO2 max than in
a group with 35-40 ml/kg/min of  VO2
max.

 

Key
words
: VO2 max, lactic acid, sub maximum physical exercises.