Combined Reduced Forced Expiratory Volume in 1 Second (FEV1) and Peripheral Artery Disease in Sedentary Elders with Functional Limitations

Overview

Journal J Am Med Dir Assoc

Publisher Elsevier

Specialty General Medicine

Date 2014 Jun 30

PMID 24973990

Citations 1

Authors

Carlos A Vaz Fragoso

Fang-Chi Hsu

Tina Brinkley

Timothy Church

Christine K Liu

Todd Manini

Anne B Newman

Randall S Stafford

Mary M McDermott

Thomas M Gill

Affiliations

Soon will be listed here.

Abstract

Objectives: Because they are potentially modifiable and may coexist, we evaluated the combined occurrence of a reduced forced expiratory volume in 1 second (FEV1) and peripheral artery disease (PAD), including its association with exertional symptoms, physical inactivity, and impaired mobility, in sedentary elders with functional limitations.

Design: Cross sectional.

Setting: Lifestyle Interventions and Independence in Elder (LIFE) Study.

Participants: A total of 1307 sedentary community-dwelling persons, mean age 78.9, with functional limitations (Short Physical Performance Battery [SPPB] <10).

Measurements: A reduced FEV1 was defined by a z-score less than -1.64 (<lower limit of normal), whereas PAD was defined by an ankle-brachial index less than 1.00. Exertional dyspnea was defined as moderate to severe (modified Borg index) immediately after a 400-meter walk test (400MWT). Exertional leg symptoms were established by the San Diego Claudication Questionnaire. Physical inactivity was evaluated by percent of accelerometry wear-time with activity less than 100 counts per minute (top quartile established high sedentary time). Mobility was evaluated by the 400MWT (gait speed <0.8 m/s defined as slow) and SPPB (≤ 7 defined moderate-to-severe mobility impairment).

Results: A combined reduced FEV1 and PAD was established in 6.0% (78/1307) of participants. However, among those who had a reduced FEV1, 34.2% (78/228) also had PAD, whereas 20.8% (78/375) of those who had PAD also had a reduced FEV1. The 2 combined conditions were associated with exertional dyspnea (adjusted odds ratio [adjOR] 2.59 [1.20-5.60]) and slow gait speed (adjOR 3.15 [1.72-5.75]) but not with exertional leg symptoms, high sedentary time, and moderate-to-severe mobility impairment.

Conclusions: In sedentary community-dwelling elders with functional limitations, a reduced FEV1 and PAD frequently coexisted and, in combination, were strongly associated with exertional dyspnea and slow gait speed (a frailty indicator that increases the risk of deleterious outcomes).

Citing Articles

Dyspnea in Community-Dwelling Older Persons: A Multifactorial Geriatric Health Condition.

Miner B, Tinetti M, Van Ness P, Han L, Leo-Summers L, Newman A J Am Geriatr Soc. 2016; 64(10):2042-2050.

PMID: 27549914 PMC: 5073004. DOI: 10.1111/jgs.14290.

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