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Peak stepping cadence is associated with leg vascular compliance in young adults.
MedLine Citation:
PMID:  24268938     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: To test the hypothesis that volume or intensity of daily ambulatory activity would associate with greater large artery compliance in healthy untrained adults.
DESIGN: Cross-sectional study.
METHODS: Forty-five recreationally active young adults (22±3yr, 51% women) wore an accelerometer for 5.3±1.3 days for determination of average daily steps (volume) and 30-min peak stepping cadence (intensity; average steps per min for the 30 highest min in a day). Arterial compliance of the common carotid artery, superficial femoral artery (SFA), and popliteal artery was estimated using Doppler ultrasound. Data were analyzed using correlational analysis and analysis of covariance.
RESULTS: Average daily steps and peak stepping cadence was 8957±3422 steps per day and 97±24 steps per min, respectively. Weight was the main independent predictor of daily steps (r(2)=0.13, p=0.01) and peak stepping cadence (r(2)=0.17, p<0.01). After adjusting ambulatory activity for weight, SFA compliance was positively correlated with peak stepping cadence (r=0.53, p<0.01) but not with daily steps (r=0.23, p>0.05). No other correlations were found between ambulatory activity and carotid or popliteal artery compliance (p>0.05). Adults with peak stepping cadence≥102 steps per min had greater carotid (1.26±0.08 vs. 1.57±0.09mm(2)kPa(-1); p=0.01) and SFA compliance (0.43±0.03 vs. 0.54±0.03mm(2)kPa(-1); p=0.04) than adults with lower stepping cadence.
CONCLUSIONS: "Brisk" stepping cadence during daily ambulation is associated with greater leg vascular compliance. These results support the promotion of accumulating 30min of "brisk" walking per day as a strategy to improve vascular health.
Authors:
Joaquin U Gonzales; Parijat Kumar; Jordan Shephard; Andey Means
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-11-5
Journal Detail:
Title:  Journal of science and medicine in sport / Sports Medicine Australia     Volume:  -     ISSN:  1878-1861     ISO Abbreviation:  J Sci Med Sport     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2013-11-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812598     Medline TA:  J Sci Med Sport     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.
Affiliation:
Department of Health, Exercise and Sport Sciences, Texas Tech University, United States. Electronic address: joaquin.gonzales@ttu.edu.
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