Influence of prior activity (warm-up) and inspiratory muscle training upon between- and within-day reliability of maximal inspiratory pressure measurement.

نویسندگان

  • M Lomax
  • A K McConnell
چکیده

BACKGROUND A specific inspiratory muscle 'warm-up' (IWU) prior to assessment of maximal inspiratory mouth pressure (PI(max)) may reduce the number of measurements required to obtain reproducible, representative estimates of PI(max). The influence of inspiratory muscle training (IMT) upon this phenomenon is unknown. OBJECTIVE Compare the impact of an IWU on the between- and within-day reliability of PI(max) before and after IMT. METHOD Eight participants were assessed on 4 separate occasions: 2 trials preceded IMT and 2 followed it. At each assessment, the highest of 3 initial efforts was recorded as the pre-IWU value (PI). The highest of 9 subsequent efforts that followed 2 sets of 30 breaths at 40% PI was recorded as PI(max). Following 4 weeks of IMT, the trials were repeated. RESULTS IWU increased PI by 11-17% (p < or = 0.01), irrespective of IMT status. After IWU, 5-6 efforts were required to determine PI(max), irrespective of IMT status. PI(max) was similar between the 2 trials before IMT and the 2 trials after IMT (p > or = 0.05), and was 21% higher after IMT (p < or = 0.01). The coefficient of variation was excellent before and after IWU, both before (1.9 and 0.6%, respectively) and after IMT (1.1 and 0.3%, respectively). Limits of agreement and sample sizes for effect sizes < or =10% were substantially smaller after IWU in all trials. CONCLUSIONS (1) IWU enhances the between-day reliability of PI(max) measurement, and this is unaffected by IMT, and (2) judgements regarding acceptability in relation to PI(max) reliability should be made in relation to analytical goals and we present data to facilitate this.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Assessment of maximum inspiratory pressure (PImax): prior submaximal respiratory muscle activity (‘warm-up’) enhances PImax and attenuates the learning effect of repeated measurement

Short title: The effect of 'warm-up' upon PImax. Abstract Background-The variability of maximal inspiratory pressure (PImax) in response to repeated measurement

متن کامل

Comparing the Effect of Resistive Inspiratory Muscle Training and Incentive Spirometry on Respiratory Pattern of COPD patients

Background: Resistive Inspiratory Muscle Training (RIMT) is a well-known technique for rehabilitation of patients with Chronic Obstructive Pulmonary Disease (COPD). Incentive spirometry is another technique with potential viability for this application, but there is limited evidence in support of its efficacy in the rehabilitation of COPD patients. Aim: The objective of this study was to compar...

متن کامل

Response of Maximum Inspiratory Pressure and Functional Capacity to Positive End-Expiratory Pressure Device after Valvular Heart Surgery

Background: Pulmonary complications following valvular heart surgery are common and contribute to increased duration of hospital stay, rate of morbidity, and mortality. The purpose of the present study was to investigate the response of maximum inspiratory pressure and functional capacity to Positive End-Expiratory Pressure device in patients who underwent valvular hea...

متن کامل

A Review of Effects of Inspiratory Muscle Training on Clinical and Functional Outcomes of Patients with Mechanical Ventilation

Background and Objectives: This review aims to explore the use of inspiratory muscle training (IMT) in patients with mechanical ventilation (MV). The topics were related to its effect on the duration of MV or weaning, respiratory symptoms or lung function, inspiratory muscle strength (IMS) or endurance, functional ability, and quality of life (QoL).  Methods: Articles published in the last 10 ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Respiration; international review of thoracic diseases

دوره 78 2  شماره 

صفحات  -

تاریخ انتشار 2009