Physiological Responses During the Lower Body Positive Pressure Supported Treadmill Test.
10.5535/arm.2016.40.5.915
- Author:
Ka Young LEE
1
;
Jae Young HAN
;
Ji Hyun KIM
;
Dong Ju KIM
;
In Sung CHOI
Author Information
1. Department of Physical and Rehabilitation Medicine, Regional Cardiocerebrovascular Center, Chonnam National University Hospital, Gwangju, Korea. rmhanjy@daum.net
- Publication Type:Original Article
- Keywords:
Exercise test;
Oxygen consumption;
Metabolic equivalent;
Rehabilitation;
Gait
- MeSH:
Blood Pressure;
Exercise Test*;
Exercise Tolerance;
Gait;
Healthy Volunteers;
Heart Rate;
Humans;
Linear Models;
Metabolic Equivalent;
Oxygen Consumption;
Rehabilitation
- From:Annals of Rehabilitation Medicine
2016;40(5):915-923
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: To quantify changes in cardiopulmonary function using a lower body positive pressure supported (LBPPS) treadmill during the exercise tolerance test (ETT) in healthy subjects before applying the LBPPS treadmill in patients with gait problems. METHODS: We evaluated 30 healthy subjects who were able to walk independently. The ETT was performed using the Modified Bruce Protocol (stages 1–5) at four levels (0%, 40%, 60%, and 80%) of LBPPS. The time interval at each level of the LBPPS treadmill test was 20 minutes to recover to baseline status. We measured systolic blood pressure, diastolic blood pressure, peak heart rate (PHR), rating of perceived exertion (RPE), metabolic equivalents (METs), and oxygen consumption rate (VO₂) during each LBPPS condition. RESULTS: Systolic blood pressure increased as the LBPPS level was increased (40% to 80%). PHR, RPE, METs, and VO₂ were negatively associated with the LBPPS condition, although they were not always significant different among the LBPPS levels. The equation from a random effect linear regression model was as follows: VO₂ (mL/kg/min)=(2.75×stage)+(–0.14×LBPPS level)+11.9 (r²=0.69). CONCLUSION: Detection of the changes in physiological parameters during a submaximal ETT using the LBPPS system may be helpful for applying the LBPPS treadmill in patients who cannot perform the ETT due to gait problems, even at submaximal intensity.
