Document Detail

Physiological and perceptual responses to backward and forward treadmill walking in water.
MedLine Citation:
PMID:  18829319     Owner:  NLM     Status:  MEDLINE    
We compared physiological and perceptual responses, and stride characteristics while walking backward in water with those of walking forward in water. Eight males walked on an underwater treadmill, immersed to their xiphoid process level. Oxygen uptake ((.)V(O2)), respiratory exchange ratio (R), heart rate (HR), minute ventilation ((.)V(E)), blood lactate concentration (BLa), ratings of perceived exertion (RPE: for breathing and legs, RPE-Br and RPE-Legs, respectively), blood pressure (for systolic and diastolic pressures, SBP and DBP, respectively), and step frequency (SF) were measured. In addition, step length (SL) was calculated. (.)V(O2), R, HR, V (E), BLa, RPE-Br, RPE-Legs, and SBP were significantly higher while walking backward in water than when walking forward in water (P<0.05). Furthermore, SF was significantly higher (P<0.001) and SL was significantly lower (P<0.001) while walking backward in water, compared to walking forward in water. These results indicate that walking backward in water elicits higher physiological and perceptual responses than those produced when walking forward in water at the same speed.
Kenji Masumoto; Ayako Hamada; Hiro-Omi Tomonaga; Kana Kodama; Yuko Amamoto; Yoshiko Nishizaki; Noboru Hotta
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-09-30
Journal Detail:
Title:  Gait & posture     Volume:  29     ISSN:  1879-2219     ISO Abbreviation:  Gait Posture     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2009-01-27     Completed Date:  2009-06-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9416830     Medline TA:  Gait Posture     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  199-203     Citation Subset:  IM    
Institute of Health Science, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan.
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MeSH Terms
Heart Rate / physiology
Lactates / blood
Leg / physiology
Muscle, Skeletal / physiology
Oxygen Consumption / physiology
Pulmonary Ventilation / physiology
Walking / physiology*
Young Adult
Reg. No./Substance:
0/Lactates; 7732-18-5/Water

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