Dillard et al have shown that maximal exercise ventilation in patients with CAO correlates with peak inspiratory flow rate as well as the FEV. It is not clear why the training induced decrease of H/rtot in our study was not translated into improved exercise performance. Possibly threshold pressure breathing is just not specific enough with regard to exercise ventilation to induce a useful training effect.
It may be that […]
Not only did Ti/Ttot decrease during the course of threshold breathing training, but this training led to substantial improvements in maximum inspiratory pressure, training pressure, and the work and pressure-time integral of threshold breathing. These improvements leave […]
Sonne and Davis found that resistive inspiratory training led to improved maximal exercise ventilation, oxygen uptake and work rate on a cycle ergometer, with no change in a sham training group. Jones et al, using a very similar program, with the addition of a third group who undertook simple physical exercises, found that all three groups improved equally. add comment
Many of these studies used inspiratory muscle training methods which […]
We used P=0.31 m to estimate pressure and found it to be 99.3 ± 5.7 percent of measured Pm determined by planimetry. The SIP before training was significantly correlated with MIP-FRC (r = .667, p<.05) and with […]
We considered the possibility that increases in MIP observed in our training group were produced by familiarization with the test rather than as a result of IMT. Therefore, we recruited a further seven patients who satisfied the entry criteria and measured MIP on two occasions six weeks apart. They had no IMT and no other intervention.
Compliance with Training Program
Nine patients enrolled […]
During the first and last threshold pressure trials of the training period, we continuously measured inspiratory flow and pressure (Pm) at the mouth. Breath by breath flow-time and pressure-time […]
The MSBC was adapted from the four-minute test described by Freedman (1970). It was determined by asking the patients to breathe humidified air as rapidly and as deeply as possible for three minutes via a low resistance two-way valve and minute ventilation was recorded. Eucapnea was maintained by adding carbon dioxide to the inspired gas at a rate adjusted to maintain the end-tidal level at 5 percent. The patient […]
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