This study aimed to develop a lactate sensor with a microchannel
that overcomes the issue of air bubbles interfering with the measurement
of lactate levels in sweat and to evaluate its potential for continuous
monitoring of lactate in sweat. To achieve continuous monitoring of
lactate, a microchannel was used to supply and drain sweat from the
electrodes of the lactate sensor. A lactate sensor was then developed
with a microchannel that has an area specifically designed to trap
air bubbles and prevent them from contacting the electrode. The sensor
was evaluated by a person while exercising to test its effectiveness
in monitoring lactate in sweat and its correlation with blood lactate
levels. Furthermore, the lactate sensor with a microchannel in this
study can be worn on the body for a long time and is expected to be
used for the continuous monitoring of lactate in sweat. The developed
lactate sensor with a microchannel effectively prevented air bubbles
from interfering with the measurement of lactate levels in sweat.
The sensor showed a concentration correlation ranging from 1 to 50
mM and demonstrated a correlation between lactate in sweat and blood.
Additionally, the lactate sensor with a microchannel in this study
can be worn on the body for an extended period and is expected to
be useful for the continuous monitoring of lactate in sweat, particularly
in the fields of medicine and sports.