Energy cost of treadmill and floor walking at self-selected paces

Pearce, Margo; Cunningham, D. A.; Donner, Allan; Rechnitzer, Peter A.; Fullerton, G M; Howard, J

doi:10.1007/bf00429037

Cited by 126 publications

(94 citation statements)

References 24 publications

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“…O 2 C [40] was similar to [1] or slightly lower than in earlier reports [41], since our control subjects walked much faster than other populations reported earlier [41][42][43][44]. The values for metabolic and gait temporal characteristics of our amputees were similar to those reported for healthy young subjects while walking fast [2,27,[45][46].…”

Section: Discussionsupporting

confidence: 85%

Influence of terrain on metabolic and temporal gait characteristics of unilateral transtibial amputees

Paysant¹,

Beyaert²,

Datié³

et al. 2006

JRRD

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Abstract-The difficulties confronted by amputees during overground walking are rarely investigated. In this study, we evaluated, in real-world situations, the influence of ground surface on walking in young, active amputees by measuring temporal and spatial gait parameters (free walking speed [FWS], step length [SL], step rate), energy expenditure (EE) (e.g., oxygen uptake, oxygen cost [O 2 C]), and Rating of Perceived Exertion (RPE). Ten active transtibial amputees and ten nondisabled control subjects walked at self-selected speeds on three types of ground surface (asphalt, mown lawn, and high grass). No significant differences were observed between the two groups on asphalt and mown lawn. Differences between nondisabled subjects and amputees occurred for FWS (p = 0.03) and O 2 C (p = 0.04) on asphalt and mown lawn and for all variables in high grass. When amputees (even though very active) were exposed to a particularly difficult environment, their FWS decreased (p = 0.008) and their EE and RPE increased (p = 0.005) compared with nondisabled subjects. In high grass, both groups reduced their self-selected speeds (-15% for control subjects and -16% for amputees). Control subjects reduced their velocity by reducing both SL (-8.7%) and cadence (-7.1%), whereas amputees reduced their velocity by reducing SL (-17%) only.

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Section: Discussionsupporting

confidence: 85%

Influence of terrain on metabolic and temporal gait characteristics of unilateral transtibial amputees

Paysant¹,

Beyaert²,

Datié³

et al. 2006

JRRD

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“…Three different articles reported a preferred speed of 4.9 AE 0.6 km=h (N ¼ 42 men), 28 4.4 AE 0.6 km=h (N ¼ 20 women) 29 and 4.3 AE 0.3 km=h (N ¼ 57 obese women), 30 respectively, during short walking tests. It is of course difficult to compare such results obtained under very different conditions in subjects of various characteristics, but it should be noted that the means and s.d's are comparable.…”

Section: Discussionmentioning

confidence: 99%

A new accelerometric method to assess the daily walking practice

et al. 2002

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OBJECTIVE: To describe a method to obtain a profile of the duration and intensity (speed) of walking periods over 24 hours in women under free-living conditions. DESIGN: A new method based on accelerometry was designed for analyzing walking activity. In order to take into account interindividual variability of acceleration, an individual calibration process was used. Different experiments were performed to highlight the variability of acceleration vs walking speed relationship, to analyze the speed prediction accuracy of the method, and to test the assessment of walking distance and duration over 24-h. SUBJECTS: Twenty-eight women were studied (mean AE s.d.) age: 39.3 AE 8.9 y; body mass: 79.7 AE 11.1 kg; body height: 162.9 AE 5.4 cm; and body mass index (BMI) 30.0 AE 3.8 kg=m 2 . RESULTS: Accelerometer output was significantly correlated with speed during treadmill walking (r ¼ 0.95, P < 0.01), and short unconstrained walks (r ¼ 0.86, P < 0.01), although with a large inter-individual variation of the regression parameters. By using individual calibration, it was possible to predict walking speed on a standard urban circuit (predicted vs measured r ¼ 0.93, P < 0.01, s.e.e. ¼ 0.51 km=h). In the free-living experiment, women spent on average 79.9 AE 36.0 (range: 31.7 -168.2) min=day in displacement activities, from which discontinuous short walking activities represented about 2=3 and continuous ones 1=3. Total walking distance averaged 2.1 AE 1.2 (range: 0.4 -4.7) km=day. It was performed at an average speed of 5.0 AE 0.5 (range: 4.1 -6.0) km=h. CONCLUSION: An accelerometer measuring the anteroposterior acceleration of the body can estimate walking speed together with the pattern, intensity and duration of daily walking activity.

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“…The use of treadmills, in clinical and research settings [1][2][3][4][5][6], rests upon the assumption that reliable and valid measures of gait can be obtained during treadmill walking (TW) and that TW can be generalized to overground walking (OW). TW, in theory, is mechanically equivalent to OW, but in reality walking on a treadmill is initially an unfamiliar experience.…”

Section: Introductionmentioning

confidence: 99%