Role of Transcutaneous Electric Nerve Stimulation in Pain and Pulmonary Function in Patients after Bariatric Surgery
Table 2
Lung volume and capacity and muscle strength before and after the application of TENS and placebo.
Intervention group ()
Placebo group ()
Pre-TENS
Post-TENS
Absolute delta
Pre-TENS
Post-TENS
Absolute delta
value
value#
Spirometry
FVC (% predicted)
95 (88–105)
56 (39–69)
-39.0 (-53–-30)
96 (87–104)
52 (42–62)
-40.5 (-55–-26)
0.38
0.80
FEV1 (% predicted)
98 (89–111)
54 (44–68)
-43.0 (-54–-29)
101 (91–109)
54 (44–70)
-46 (-54–-21)
0.61
0.82
FEV1/FVC (%)
105 (100–107)
109 (96–115)
3.7 (-2–10)
105 (101–110)
113 (106–118)
7.1 (-1–16)
0.35
0.25
PEF (% predicted)
108 (89–125)
41 (30–58)
-63.0 (-83–-39)
103 (91–115)
40 (26–54)
-57.5 (-78–-39)
0.66
0.69
Respiratory muscle strength
MIP (% predicted)
120 (110–120)
120 (72–123)
0 (-29–5)
120 (100-120)
113 (42–120)
-5.5 (-46–0)
0.79
0.03
MEP (% predicted)
120 (90–120)
77 (50–103)
-22.0 (-55–-6)
100 (85-120)
73 (56–96)
-27.5 (-50–0)
0.51
0.82
The results are expressed as the median (interquartile range); FVC: forced vital capacity; FEV1: forced expiratory volume in 1 second; PEF: peak expiratory flow; MIP: maximum inspiratory pressure; MEP: maximum expiratory pressure. Comparison between the 2 groups in relation to pre-TENS measurements. #Comparison between the 2 groups in relation to absolute delta values (post-TENS minus pre-TENS measurements).
