Innovation
There was no difference in treatment effect between NIV-supported ACT and ACT alone, although the study was not properly weighted. Oxygen saturations were significantly higher during NIV-supported ACT, but with no effect on saturations after treatment. NIV was well tolerated.
Evaluation System
Twenty-four adults with FQ were randomized to a 30-minute EI workout (100% of peak work capacity (WRpeak) for 30-s alternated with 40% WRpeak for 30-s; n=12) or 30 minutes of CLE (70% WRpeak; n=12), 3 times a week for 12 weeks. Isometric muscle strength of the quadriceps was assessed using a Myometer strain gauge.
The magnitude of improvement in quadriceps muscle strength was greater (p=0.037) in the IE groups (by 32±13 Nm) compared to the CLE groups (by 23±12 Nm). Maximal inspiratory and expiratory mouth pressures were significantly improved only in the IE group (30±10 cmH2O; p=0.009 and 13±4 cmH2O; p=0.007, respectively). Arterial oxygen saturation during training was higher (p=0.002) in the IE group (94±1%) compared to the CLE group (91±1%), while dyspnea values were lower (p=0.001) in the IE group (3.8±0.7) compared to the CLE group (5.9±0.8).
Assessment
IS is equally effective than constant load exercise (CLA) in improving functional capacity and aspects of quality of life, but is superior to CLA in improving peripheral and respiratory muscle strength and levels of daily physical activity.
References
Kaltsakas, G., Chynkiamis, N., Anastasopoulos, N., Zeliou, P., Karapatoucha, V., Kotsifas, K., ... & Vogiatzis, I. (2021). Interval versus constant-load exercise training in adults with Cystic Fibrosis. Respiratory physiology & neurobiology, 288, 103643.
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