TY - JOUR
T1 - Metabolic Costs during Backward Running with Body Weight Support
AU - Masumoto, Kenji
AU - Galor, Kendell
AU - Craig-Jones, Andrew
AU - Mercer, John A.
N1 - Funding Information:
The authors would like to acknowledge all the participants for their voluntary involvement in the present study, thereby making the project a success. This study was supported by a Grant-in-Aid for Scientific Research (C) from the Japan Society for the Promotion of Science (JSPS KAKENHI Grant Number JP16K01663).
Publisher Copyright:
© Georg Thieme Verlag KG Stuttgart. New York.
PY - 2019
Y1 - 2019
N2 - We investigated metabolic costs, rating of perceived exertion (RPE), stride frequency (SF), and preferred speed (PS) during forward and backward running at different levels of body weight support (BWS). Participants completed forward and backward running on a lower body positive pressure treadmill at their preferred speed for forward and backward running at 0%BWS, 20%BWS, and 50%BWS. Oxygen uptake (V-O 2 ), heart rate (HR), RPE, SF, and PS were measured. HR, RPE, and SF during forward and backward running decreased with increasing BWS (P<0.05).V-O 2 during both forward and backward running at 50%BWS was significantly lower than when running at 0%BWS (P<0.01). However, PS during forward and backward running increased with increasing BWS (P<0.01). Furthermore,V-O 2 was different between running directions only when running at 0%BWS (P<0.01). HR and RPE were not different between running directions (P>0.05). SF during backward running was higher than that of forward running (P<0.01). PS during backward running was lower than when running forward (P<0.001). Our observations suggest that individuals may select PS and SF during running with BWS in a way that resulted in similar metabolic costs, regardless of direction of locomotion.
AB - We investigated metabolic costs, rating of perceived exertion (RPE), stride frequency (SF), and preferred speed (PS) during forward and backward running at different levels of body weight support (BWS). Participants completed forward and backward running on a lower body positive pressure treadmill at their preferred speed for forward and backward running at 0%BWS, 20%BWS, and 50%BWS. Oxygen uptake (V-O 2 ), heart rate (HR), RPE, SF, and PS were measured. HR, RPE, and SF during forward and backward running decreased with increasing BWS (P<0.05).V-O 2 during both forward and backward running at 50%BWS was significantly lower than when running at 0%BWS (P<0.01). However, PS during forward and backward running increased with increasing BWS (P<0.01). Furthermore,V-O 2 was different between running directions only when running at 0%BWS (P<0.01). HR and RPE were not different between running directions (P>0.05). SF during backward running was higher than that of forward running (P<0.01). PS during backward running was lower than when running forward (P<0.001). Our observations suggest that individuals may select PS and SF during running with BWS in a way that resulted in similar metabolic costs, regardless of direction of locomotion.
KW - preferred gait patterns
KW - running direction, body weight support
UR - http://www.scopus.com/inward/record.url?scp=85063447216&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063447216&partnerID=8YFLogxK
U2 - 10.1055/a-0806-7537
DO - 10.1055/a-0806-7537
M3 - Article
C2 - 30716782
AN - SCOPUS:85063447216
SN - 0172-4622
VL - 40
SP - 269
EP - 275
JO - International Journal of Sports Medicine
JF - International Journal of Sports Medicine
IS - 4
ER -