Body composition
Subjects underwent body composition measurements before and after each phase of the intervention. All subjects were required to fast for 8 hours before the measurement. During the test, all subjects stood on the bottom electrode with arms extended at a 30° angle to the torso, held the induction handle with both hands, and did not move or speak. Measurements were performed within 60 s at 1, 5, 50, 260, 500, and 1000 kHz using a bioelectrical impedance analyzer (BIA) (InBody 570, In-body, Seoul, Korea) with the multi-frequency principle.