S. R. Datta

Bio: S. R. Datta is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 6 citations.

Studies in load carrying in BK amputees with a PTB prosthesis system.

Abstract: This study was undertaken to assess the effects of certain common modes of load carrying by hand in the BK amputee-PTB prosthesis system. The energy costs of a test group consisting of BK amputees using PTB prostheses were compared to those of a control group made up of normal able-bodied individuals and the difference between the two groups was observed to be more marked when walking was performed on the level with load in one hand only in comparison with the both-hand carrying conditions. Single handed load carrying by either hand did not seem to make any observable difference. Stair ascending with equal load in both hands did not produce any appreciable difference between the two groups. Indications were obtained that the BK amputee with a PTB prosthesis system is capable of performing industrial tasks of "moderate" grade.

Energy Expenditure During Ambulation

Abstract: Publisher Summary This chapter discusses the energy expenditure during ambulation During gait, two main events occur in which energy is consumed: one is in controlling forward movement during deceleration toward the end of swing phase and for shock absorption at heel strike, and the other is in propulsion during push off when the center of gravity is propelled up and forward Ironically, more energy is expended to control forward movement than to propel forward The fine articulations characteristic of the intact human leg result in a normal gait pattern If movement occurs only at either end, as in a stick, then compass gait results, which is marked by abrupt acceleration and deceleration, and unnecessary vertical excursion of the center of gravity by about 3 inches During activity, there is interplay between aerobic and anaerobic mechanisms In aerobic oxidation—Krebs' citric acid cycle—carbohydrates and fats provide the primary fuels These substrates are oxidized through a series of reactions leading to the production of adenosine triphosphate Oxygen is the final hydrogen acceptor, and water is formed

One-handed carrying among elderly and obese individuals: a systematic review to identify research gaps.

Abstract: A systematic review of the literature regarding one-handed load carrying was conducted to identify research gaps for future load carrying studies. Twenty-six articles that may be relevant to elderl...

Measurement of gait disability from tachographic gait records--an improved approach.

Abstract: 1 I n t r o d u c t i o n THE tachographic gait recording technique based on recording the progressive component of the instantaneous velocity of the body's centre of gravity, as developed by GANGULI and MUKHERJEE (1973, 1977) offered scope for improvement with regard to the recording setup as well as the method of analysing the gait curves. The present authors have modified the gait recording setup with a view to producing better transfer characteristics and also suggested a method for detailed analysis of the gait curves 9 This method of gait curve analysis provides a set of eight normalised parameters to represent the pattern associated with the corresponding person's gait curves. A gait cycle may be divided into four phases of amplitude and time, i.e. the acceleration and the retardation phases when one leg is swinging and the same two phases when the other leg is swinging. Four out of these eight parameters represent the total velocity changes during each phase and the other four parameters represent the time durations of the phases (see Figs. 1A and 1B for illustration). The amplitude parameters are normalised with the average of t h e four amplitude parameters (i .e.a. = 4A./EA.) and the time parameters are normalised with the average of the four time parameters (i .e.t . = 4T./ET,,), so that this set of eight parameters of gait is independent of the walking cadence and

Heart Rate and Perceived Exertion Among Young Adult Obese Males During One-Handed Carrying:

Abstract: Obesity is an increasing problem across the globe that has been strongly associated with work-related injury. One-handed carrying is considered one of the most fatiguing methods of load carrying. The objective of this study was to examine the effects of obesity and load magnitude on heart rate and ratings of perceived exertion among young adult males during one-handed carrying. Load magnitude was observed to have a statistically significantly effect on heart rate and perceived exertion of the arm, back and whole body, whereas obesity was significant only for perceived exertion of the arm. The results suggest that young adult obese males can carry similar loads as young adult non-obese males without having a statistically significant increase in heart rate or perceived exertion. However, more research is needed to validate these results for longer distances and carrying times.