Acu-TENS and Postexercise Expiratory Flow Volume in Healthy Subjects
Table 1
Variables recorded at different postexercise time points.
Acu-TENS
Placebo-TENS
Mean difference Acu-TENS − Placebo-TENS (95%CI)
value
Peak heart rate (beats per min)
180.7 ± 5.7
182.1 ± 6.0
−1.4 (−7.1 to 4.3)
.606
Heart Rate, % maximum
92.6 ± 2.5
93.3 ± 2.8
−0.7 (−3.7 to 2.2)
.601
Rate of perceived exertion
17.0 ± 0.4
17.2 ± 0.5
−0.2 (−0.6 to 0.2)
.341
Exercise duration, min
17.1 ± 0.5
16.1 ± 0.6
0.9 (0.1 to 1.7)
.026†
Δ FEV1 postexercise, %
0 min
3.4 ± 1.4
0.5 ± 0.9
2.9 (−0.6 to 6.4)
.098
15 min
3.1 ± 1.7
−0.2 ± 1.1
3.3 ( 0.9 to 5.8)
.013†
30 min
2.5 ± 1.3
−1.0 ± 1.2
3.5 (−1.3 to 8.3)
.135
45 min
3.0 ± 1.2
−2.1 ± 1.2
5.1 (0.1 to 10.1)
.047†
Δ FVC postexercise, %
0 min
−3.0 ± 1.6
−2.6 ± 1.3
−0.4 (−3.5 to 2.7)
.784
15 min
0.0 ± 1.3
0.5 ± 1.3
−0.5 (−3.7 to 2.8)
.763
30 min
0.0 ± 1.1
0.1 ± 1.4
−0.1 (−3.5 to 3.4)
.974
45 min
−0.2 ± 1.0
−1.0 ± 1.7
0.8 (−3.6 to 5.2)
.705
Data are mean ± SEM unless otherwise indicated. † denotes ; FEV1: forced expiratory volume in one second, FVC: forced vital capacity, HR: heart rate; Δ denotes percentage change: (postexercise data − pre-exercise data)/pre-exercise data × 100%.