Correlation between walking energy expenditure and tachographic gait parameters
TL;DR: The investigation reported in this paper is a follow-up to the authors’ pilot study which was published in an earlier issue of'JMET.
Abstract: A group of 53 adult men, normal subjects as well as victims of different types of lower-extremity handicaps, took part in tachographic gait studies and measurements of physiological energy expenditure whilst walking at a self-selected pace. The observations were analysed to explore the relationships between walking energy expenditure and various gait parameters. This analysis allowed the authors to identify some biomechanical indices which can be used for objective evaluations of human performance in locomotion. The investigation reported in this paper is a follow-up to the authors’ pilot study which was published in an earlier issue of'JMET.
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TL;DR: The results indicate that the values of average velocity and average step length can be used to calculate step time with reasonable accuracy in a symmetrical walking pattern, but not under conditions of induced step length or step time asymmetries.
Abstract: This study was designed to investigate the relationship between step time and step length in a healthy population of young adults. The sample was composed of 10 females and 10 males with ages ranging from 19 to 25 years. The subjects walked along a resistive grid walkway at an audio-controlled cadence of 80 steps per minute. These trials consisted of two walks with asymmetrical step lengths (2/4 time), two walks with asymmetrical step times (3/4 time) and two in which the only constraint was the cadence. The results indicate that the values of average velocity and average step length can be used to calculate step time with reasonable accuracy in a symmetrical walking pattern, but not under conditions of induced step length or step time asymmetries. It is suggested that stride frequency rather than cadence be used, particularly when measurements are made from patients with asymmetrical walking patterns.
6 citations
Journal Article•
TL;DR: The goal of this research is to develop and test an ultrasound-based gait tachography system to enable the doctors and physiotherapists to evaluate lower limb extremity problems.
Abstract: Gait analysis is an approach towards analysis of the structure and function of the foot, lower limb and body during walking or running. The aim of gait analysis in rehabilitation centres is much larger than only simply a functional assessment tool as it can help us determine the complex relationships between impairment, functional limitation and disability. The goal of this research is to develop and test an ultrasound-based gait tachography system to enable the doctors and physiotherapists to evaluate lower limb extremity problems. Gait tachography employ Doppler frequency shifting principle to calculate the change in velocity of body's centre of gravity during gait. The ultrasound-based gait tachography includes simple instrumentation, composed of a transmitter and a receiver block. The ultrasonic gait tachograph is cost efficient, comparatively small, lightweight, does not hamper a person's psychology much and is suitable to be used in non-laboratory situation.
3 citations
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TL;DR: In both groups of amputees performance was significantly better the lower the level of the amputation, and when preservation of function is the chief concern, amputation should be performed at the lowest possible level.
Abstract: A comparison of selected gait parameters and the energy cost of prosthetic walking was made in seventy patients with unilateral traumatic and vascular amputations. Amputations above the knee, below the knee, and at the Syme's level were compared in both groups of amputees, and a control group of forty normal subjects also studied. In both groups of amputees performance was significantly better the lower the level of the amputation. When preservation of function is the chief concern, amputation should be performed at the lowest possible level.
994 citations
TL;DR: In this article, indirect calorimetric measurements were made on two athletes running at different speeds up to 22 km/hr at grades from -20 to +15; the function was found to be linearly related to speed.
Abstract: Indirect calorimetric measurements were made on two athletes running at different speeds up to 22 km/hr at grades from -20 to +15%; the function was found to be linearly related to speed. Within th...
667 citations
Journal Article•
83 citations
TL;DR: The electromechanical behaviour of the tachographic gait recording system developed by earlier research scientists was analysed and the resulting modified system was used to record the gait of 25 normal, healthy, able-bodied adult males with sedentary habits, and 67 subjects having different types of lower extremity handicap.
10 citations
10 citations