OBJECTIVE: In a preliminary study in our laboratory, healthy elderly people had a higher heart rate during treadmill walking than during corridor walking at the same speed. The objective of this study was to determine whether this initial observation, (1) persisted after repeated testing, (2) was present in younger adults, (3) was due to wearing a mouthpiece during treadmill walking, or (4) was due to a change in gait. DESIGN: A study of elderly and young volunteers undergoing repeated testing, with comparison of treadmill walking with corridor walking. SETTING: The Royal Free Hospital School of Medicine. PARTICIPANTS: Twelve healthy elderly (71-80 years) and 12 healthy young (21-37 years) volunteers. MAIN OUTCOME MEASURES: Heart rate (beats/min) and step rate (steps/min) during comfortable self-paced corridor walking and during treadmill walking at the same speed. MAIN RESULTS: The elderly subjects had higher heart rates during treadmill walking than during corridor walking at the same speed (mean difference = 6 beats/min, 95% Confidence Interval (CI) = 1 to 10). This difference increased (to a mean of 11 beats/min, 95% CI = 5 to 16) when a mouthpiece was worn on the treadmill. These differences persisted after repeated testing. The young subjects did not have higher heart rates on the treadmill, (with or without the mouthpiece). In both groups, step rate was lower (95% CI = -9 to -2, elderly; -5 to -2, young) during treadmill walking, corresponding to a 3% increase in stride length. CONCLUSION: The heart rate response to treadmill walking in healthy elderly people may be less representative of the "real life" situation than in younger adults.
OBJECTIVE: In a preliminary study in our laboratory, healthy elderly people had a higher heart rate during treadmill walking than during corridor walking at the same speed. The objective of this study was to determine whether this initial observation, (1) persisted after repeated testing, (2) was present in younger adults, (3) was due to wearing a mouthpiece during treadmill walking, or (4) was due to a change in gait. DESIGN: A study of elderly and young volunteers undergoing repeated testing, with comparison of treadmill walking with corridor walking. SETTING: The Royal Free Hospital School of Medicine. PARTICIPANTS: Twelve healthy elderly (71-80 years) and 12 healthy young (21-37 years) volunteers. MAIN OUTCOME MEASURES: Heart rate (beats/min) and step rate (steps/min) during comfortable self-paced corridor walking and during treadmill walking at the same speed. MAIN RESULTS: The elderly subjects had higher heart rates during treadmill walking than during corridor walking at the same speed (mean difference = 6 beats/min, 95% Confidence Interval (CI) = 1 to 10). This difference increased (to a mean of 11 beats/min, 95% CI = 5 to 16) when a mouthpiece was worn on the treadmill. These differences persisted after repeated testing. The young subjects did not have higher heart rates on the treadmill, (with or without the mouthpiece). In both groups, step rate was lower (95% CI = -9 to -2, elderly; -5 to -2, young) during treadmill walking, corresponding to a 3% increase in stride length. CONCLUSION: The heart rate response to treadmill walking in healthy elderly people may be less representative of the "real life" situation than in younger adults.
Authors: Mary M McDermott; Jack M Guralnik; Lu Tian; Lihui Zhao; Tamar S Polonsky; Melina R Kibbe; Michael H Criqui; Dongxue Zhang; Michael S Conte; Kathryn Domanchuk; Lingyu Li; Robert Sufit; Christiaan Leeuwenburgh; Luigi Ferrucci Journal: J Vasc Surg Date: 2019-12-23 Impact factor: 4.268
Authors: Mary M McDermott; Jack M Guralnik; Michael H Criqui; Kiang Liu; Melina R Kibbe; Luigi Ferrucci Journal: Circulation Date: 2014-07-01 Impact factor: 29.690
Authors: Magdalena Pilz; Elisabeth Kandioler-Honetz; Alfa Wenkstetten-Holub; Waltraud Doerrscheidt; Rudolf Mueller; Robert Wolfgang Kurz Journal: Wien Klin Wochenschr Date: 2014-05-14 Impact factor: 1.704
Authors: Alfa Wenkstetten-Holub; Elisabeth Kandioler-Honetz; Ingrid Kraus; Rudolf Müller; Robert Wolfgang Kurz Journal: Wien Med Wochenschr Date: 2012-06-12
Authors: Mary M McDermott; Philip Ades; Jack M Guralnik; Alan Dyer; Luigi Ferrucci; Kiang Liu; Miriam Nelson; Donald Lloyd-Jones; Linda Van Horn; Daniel Garside; Melina Kibbe; Kathryn Domanchuk; James H Stein; Yihua Liao; Huimin Tao; David Green; William H Pearce; Joseph R Schneider; David McPherson; Susan T Laing; Walter J McCarthy; Adhir Shroff; Michael H Criqui Journal: JAMA Date: 2009-01-14 Impact factor: 56.272
Authors: Mary M McDermott; Philip A Ades; Alan Dyer; Jack M Guralnik; Melina Kibbe; Michael H Criqui Journal: J Vasc Surg Date: 2008-10-01 Impact factor: 4.268
Authors: Mary M McDermott; Kathryn Domanchuk; Kiang Liu; Jack M Guralnik; Lu Tian; Michael H Criqui; Luigi Ferrucci; Melina Kibbe; Donald-Lloyd Jones; William H Pearce; Lihui Zhao; Bonnie Spring; W Jack Rejeski Journal: Contemp Clin Trials Date: 2012-08-07 Impact factor: 2.226