Document Detail

Ventilatory responses and entrainment of breathing during rowing.
MedLine Citation:
PMID:  2017014     Owner:  NLM     Status:  MEDLINE    
The purpose of this investigation was to investigate the hypothesis that respiration was coupled with the mechanics of the rowing stroke. In the first part of the study, physiologic responses during incremental exercise on the variable-resistance rowing ergometer were compared in 16 untrained female subjects (U), 17 collegiate female rowers (C), and 21 elite oarswomen (E). Minute ventilation (VE) and frequency of respiration (fR) were examined on a log scale as their relationship with oxygen consumption (VO2) was exponential. The slopes for log VE/VO2 were similar for collegiate (0.65 +/- 0.02) and elite (0.59 +/- 0.01) rowers, but the slope was significantly higher for the untrained (0.87 +/- 0.01) subjects (P less than 0.001). Elite rowers utilized a higher tidal volume (VT) response per VO2 (0.68 +/- 0.04 vs 0.30 +/- 0.05; P = 0.01) and lower log fR response per VO2 (0.27 +/- 0.02 vs 0.50 +/- 0.03; P = 0.01) compared with collegiate rowers. The ratio of fR/strokes per minute (SPM) averaged 1.5 in E athletes but varied in the U and C groups. In the second part of the study, pattern and timing of respiration were recording using an inspiratory pneumotachygraph, analyzed, and compared with specific phases of the rowing stroke in ten untrained subjects and nine elite rowers. The ratio of inspiratory time (T1)/total respiratory time (TTOT) decreased during the drive phase and increased during the recovery phase in both untrained subjects and elite rowers.(ABSTRACT TRUNCATED AT 250 WORDS)
D A Mahler; C R Shuhart; E Brew; T A Stukel
Related Documents :
8256884 - Breathlessness during acute bronchoconstriction in asthma. pathophysiologic mechanisms.
3391894 - Ventilatory muscle recruitment during unsupported arm exercise in normal subjects.
11079514 - Inspiratory strengthening effect on resistive load detection and magnitude estimation.
4023974 - Occupational asthma in a factory with a contaminated humidifier.
9173954 - Effect of glucose supplement timing on protein metabolism after resistance training.
18269394 - Microbiological risk of anaesthetic breathing circuits after extended use.
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  23     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-05-23     Completed Date:  1991-05-23     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  186-92     Citation Subset:  IM; S    
Department of Medicine, Dartmouth Medical School, Hanover, NH 03756.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Analysis of Variance
Exercise / physiology*
Oxygen Consumption
Respiration / physiology*
Respiratory Function Tests
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Effect of ultrasound therapy on the repair of Achilles tendon injuries in rats.
Next Document:  Acute effects of resistance exercise on parameters of lipoprotein metabolism.