Four minutes of capacitive and resistive electric transfer therapy increased jump performance.

Michio Wachi
 Takumi Jiroumaru
 Ayako Satonaka
 Masae Ikeya
 Nobuko Shichiri
 Junko Ochi
 Yutaro Hyodo
 Takamitsu Fujikawa

Capacitive and resistive electric transfer (CRET) therapy can improve flexibility and increase muscle activity and may be useful as a warm-up technique. This study examined the effects of short-time CRET on jump performance. Thirty healthy men (age range
 20-40?years) were randomly divided into passive (n?=?15) and active (n?=?15) warm-up groups. The participants and statisticians were blinded to the participant allocation. The passive warm-up group underwent 4?min of CRET therapy on their posterior lower legs. The active warm-up group performed stretching and jogging for 4?min. Calf muscle temperature and rebound jump (RJ) index were measured before and after the intervention. The mean (± standard deviation) muscle temperature increased by 2.0?±?0.5°C and 1.4?±?0.6°C in the passive and active warm-up groups
 respectively (p?<?0.05). RJ index increased significantly in both groups (p?<?0.05). Therefore
 passive warm-up using CRET may help avoid energy loss while increasing the muscle temperature in a short time when compared with traditional active warm-up techniques.

Electromagnetic biology and medicine

42

4

10.1080/15368378.2023.2