Takuya Ujikawa, RPT, MS, Tomoshige Koga, PhD
Jpn J Compr Rehabil Sci 11: 59-64, 2020
Objective: This study was conducted to clarify the
effects of three types of warming up (WU), namely
static stretching (SS), dynamic stretching (DS) and
cycle ergometer riding at 20 watts (ergo), on
cardiopulmonary function and muscle activity during
incremental exercise.
Methods: Ten healthy adult males (aged 20.6 ± 0.5
years) participated in this study. Oxygen uptake, heart
rate variability, oxidized hemoglobin and discharges
of lower limb muscle were continuously recorded
during WU and the subsequently performed
incremental exercise.
Results: The sympathetic nervous activity index
analyzed from heart rate variability, oxygen uptake
and cardiac output significantly increased, and the
parasympathetic nervous activity index decreased
after DS and ergo compared to those after SS.
However, no significant differences were found
between those values while exercise was maintained
at the anaerobic threshold level.
Conclusion: DS and ergo were suggested to be
effective for adapting to exercise, but these effects
seemed to disappear at the anaerobic threshold level.
Key words: static stretching, dynamic stretching, incremental exercise, heart rate variability, electromyogram