Energy consumption and gait characteristics of overweight adults

doi:10.3969/j.issn.2095-4344.2901

Abstract

Abstract:

BACKGROUND: Many studies have investigated gait modification in obese people; however, no research has been carried out in gait and energy cost of overweight subjects.

OBJECTIVE: To compare the energy consumption and gait characteristics of overweight and normal weight groups, and explore the relationship between body composition and gait parameters.

METHODS: Seventy-five male subjects were divided into two groups according to body mass index: the control group (n=40, body mass index: 18.5-23.9 kg/m²), the overweight group (n=35, body mass index: 24.0-27.9 kg/m²). The body composition data of all subjects were measured before the test. All participants wore IDEEA-III to walk on the treadmill for 10 minutes at the set speed of 3.5 and 4.5 km/h respectively. The parameters such as step length, stride length, cadence, single leg support time, double leg support time, and gait cycle were recorded. Metabolic cost of walking of the subjects was measured and recorded by the metabolic chamber. The use of human subjects was approved by the review committee of Jiangsu Research Institute of Sports Science. All subjects signed the informed consent.

RESULTS AND CONCLUSION: (1) There was no significant difference in age and height between the two groups, and there was significant difference in other body composition indexes (P < 0.05). (2) At the speed of 3.5 km/h, the pulling power, swinging power, ground force reaction, foot landing control, and cadence in the overweight group were significantly higher than in the control group (P < 0.05). The gait cycle and the angle of foot before leaving the ground were significantly lower in the overweight group than in the control group (P < 0.05). There was no significant difference in other gait parameters. (3) At the speed of 4.5 km/h, single leg support time was lower in the overweight group than in the control group; the double leg support time was higher in the overweight group than in the control group; and the gait cycle time was lower in the overweight group than in the control group, with significant difference (P < 0.05). Compared with the control group, pulling power and cadence were higher, and the angle of foot off the ground was lower in the overweight group (P < 0.05). (4) At the speed of 3.5 km/h, only body mass index and body fat percentage were related to the angle of foot off the ground. At the speed of 4.5 km/h, single leg support time and double leg support time were more highly correlated with body mass index and body mass. The body fat percentage was more correlated to the angle of foot off the ground. When the speed was too slow, the gait of overweight people could not be changed, but when the speed was fast, the gait changes obviously. Regardless of the speed, metabolic cost of walking and metabolic cost of walking after standardized body mass in the overweight group were higher than in the control group.

Key words: overweight, body mass, energy, gait, metabolism, consumption, body composition

CLC Number:

Lu Qi. Energy consumption and gait characteristics of overweight adults[J]. Chinese Journal of Tissue Engineering Research, 2020, 24(36): 5779-5784.

Figures/Tables 5

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