Cardiorespiratory responses to aquatic treadmill walking in patients with rheumatoid arthritis.
BACKGROUND AND PURPOSE: Hydrotherapy is popular with patients with rheumatoid arthritis (RA). Its efficacy as an aerobic conditioning aid is equivocal. Patients with RA have reduced muscle strength and may be unable to achieve a walking speed commensurate with an aerobic training effect because the...
| Published in: | Physiotherapy Research International Vol. 9; no. 2; pp. 59 - 74 |
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| Main Authors: | , , , , |
| Format: | research tables/charts Journal Article |
| Published: |
Wiley-Blackwell
2004
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106557976&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106557976 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13582267 GPG jtl: Physiotherapy Research International issn: 13582267 maglogo: Y pubinfo: dt: 2004 vid: 9 iid: 2 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 106557976 2005013175 10.1002/pri.303 NLM15317421 106557976 ppf: 59 ppct: 15 formats: fmt: @attributes: type: P tig: atl: Cardiorespiratory responses to aquatic treadmill walking in patients with rheumatoid arthritis. aug: au: Hall J Grant J Blake D Taylor G Garbutt G affil: Physiotherapy Department, Royal United Hospital, Bath, UK; jhall_work@yahoo.co.uk sug: subj: Aquatic Exercises Walking Treadmills Cardiopulmonary Physiology Heart Rate Exertion Exercise Intensity Arthritis, Rheumatoid Therapy Comparative Studies Exercise Physiology Scales Female Middle Age Descriptive Statistics Pulmonary Gas Exchange Evaluation Statistical Significance American College of Sports Medicine Standards Adult United Kingdom Power Analysis Oxygen Consumption Evaluation Visual Analog Scaling Pain Measurement Questionnaires Physical Activity Evaluation Interviews Body Weights and Measures Health Status Evaluation Telemetry Two-Way Analysis of Variance Repeated Measures Post Hoc Analysis Paired T-Tests Friedman Test Wilcoxon Rank Sum Test Body Temperature Determination Blood Pressure Determination Linear Regression Data Analysis Software Body Mass Index Evaluation Functional Assessment Funding Source Human Middle Aged: 45-64 years Adult: 19-44 years Female ab: BACKGROUND AND PURPOSE: Hydrotherapy is popular with patients with rheumatoid arthritis (RA). Its efficacy as an aerobic conditioning aid is equivocal. Patients with RA have reduced muscle strength and may be unable to achieve a walking speed commensurate with an aerobic training effect because the resistance to movement increases with speed in water. The physiological effects of immersion may alter the heart rate-oxygen consumption relationship (HR-VO2) with the effect of rendering land-based exercise prescriptions inaccurate. The primary purpose of the present study was to compare the relationships between heart rate (HR), and ratings of perceived exertion (RPE), with speed during land and water treadmill walking in patients with RA. METHOD: The study design used a two-factor within-subjects model. Fifteen females with RA (47+/-8 SD years) completed three consecutive bouts of walking for five minutes at 2.5, 3.5 and 4.5 km/h(-1) on land and water treadmills. Expired gas, collected via open-circuit spirometry, HR and RPE were measured. RESULTS: HR and RPE increased on land and in water as speed increased. Below 3.5 km/h(-1) VO2 was significantly lower in water than on land (p<0.01). HR was lower (p<0.001), unchanged and higher (p<0.001) at 2.5, 3.5 and 4.5 km/h(-1) in water than on land. RPE was significantly higher in water than on land (p<0.05). VO2 was approximately 60% of the predicted VO2max during the fast walking speed in water. For a given VO2, HR was approximately nine beats/min(-1) and RPE 1-2 points on the 6-20 Borg scale, higher in water than on land. CONCLUSIONS: The study showed that the metabolic demand of walking at 4.5 km/h(-1) was sufficient to stimulate an increase in aerobic capacity. The use of land-based prescriptive norms would underestimate the metabolic cost in water. Therefore, in water HR should be increased by approximately 9 beats/min(-1) to achieve similar energy demands to land treadmill walking. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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