Influence of Body Mass Index on Visual Reaction Time: A Cross-sectional Analytical Study

2015 ◽  
Vol 10 (3) ◽  
pp. 1-8
Author(s):  
Choon Ngo ◽  
Hui Loh ◽  
Gee Choo ◽  
Rammiya Vellasamy ◽  
Mogaratnam Anparasan
Keyword(s):  
Body Mass Index ◽  
Reaction Time ◽  
Body Mass ◽  
Analytical Study ◽  
Visual Reaction Time ◽  
Cross Sectional ◽  
Visual Reaction

scholarly journals Relationship between body mass index and simple visual reaction time in students of a medical college of Nepal

2020 ◽  
Vol 1 (2) ◽  
pp. 14-18
Author(s):  
Neeti Bhat ◽  
Narayan Bahadur Mahotra ◽  
Lava Shrestha ◽  
Vibina Aryal ◽  
Nirmala Rayamajhi ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Central Nervous System ◽  
Nervous System ◽  
Reaction Time ◽  
Body Mass ◽  
The Body ◽  
Visual Reaction Time ◽  
Cross Sectional ◽  
Visual Reaction ◽  
The Central Nervous System

Introduction: Obesity is a chronic condition with an increase in adipose tissues. It is known to affect various systems of body including the central nervous system. Reaction time is a measure of the integrity of the central nervous system which is an integrated voluntary response to a stimulus that includes receiving and processing of stimulus, drawing inference, and generating a motor response. This study was conducted with the objective of finding a relationship between body mass index, a measure of obesity and simple visual reaction time. Materials and methods: This cross-sectional analytical study was conducted on 60 participants aged 18-25 years. The body mass index of participants was calculated using Quetelet’s index, calculated by weight in kilograms divided by square of height in meter. Deary-Liewald reaction time task software version 3.10 was used to analyze their simple visual reaction time. Correlation of reaction time and body mass index was assessed using Pearson’s correlation test. Results: A weak positive correlation (r= 0.17) was observed between body mass index and simple visual reaction time but the correlation coefficient was not statistically significant (p=0.19). Conclusions: Slower visual reaction time with an increase in body mass index was noted. But the findings of current study were inadequate to deduce if any linear relationship exists between simple visual reaction time and body mass index.

scholarly journals A Cross Sectional Study - Effect of Postural Changes on Choice Reaction Time with Reference to Body Mass Index in Medical Students

2021 ◽  
Vol 8 (13) ◽  
pp. 740-744
Author(s):  
Anita Gaule ◽  
Gourav Bhattad ◽  
Aditi Sood
Keyword(s):  
Body Mass Index ◽  
Reaction Time ◽  
Body Mass ◽  
Negative Correlation ◽  
Reaction Times ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Visual Reaction ◽  
Auditory Reaction Time ◽  
Moderate Negative Correlation

BACKGROUND Reaction time (RT) is a simple, non-invasive means of estimating sensorimotor coordination and monitoring performance of an individual. The effect of body mass index (BMI) on RT, suggests that underweight, overweight and obese have increased RT as compared to normal BMI individuals. We wanted to compare the effects of supine, sitting and standing postures on RT and determine the influence of BMI on the same. METHODS An observational cross-sectional study was carried out over 2 months in the Department of Physiology on 60 medical students (30 males and 30 females). Visual and auditory choice reaction times of subjects were measured in supine, sitting and standing postures for green, red and yellow colours and high, medium and low frequency sounds. RESULTS In sitting posture, significant and moderate negative correlation was observed between BMI and visual reaction time (VRT) while the correlation between auditory reaction time (ART) and BMI was weak negative but non-significant. In standing posture, non-significant and weak negative correlation was observed between BMI and VRT, also the correlation between ART and BMI was weak negative but not significant. In supine posture, significant and moderate negative correlation was observed between BMI and ART while the correlation between VRT and BMI was weak negative but not significant. CONCLUSIONS When compared with normal BMI group, higher BMI subjects had longer visual as well as auditory reaction times. The difference was not found to be statistically significant though. A weak or moderate negative correlation between BMI and reaction time (r value < 0.4 in magnitude) was observed in three different postures. KEYWORDS Choice Reaction Time, Visual Reaction Time, Auditory Reaction Time, Posture, Body Mass Index

scholarly journals Visual Reaction Time: How it Relates to Body Mass Index, Dominant and Non-dominant Hand in Healthy Young Females

2021 ◽  
Vol 23 (4) ◽  
pp. 347-351
Author(s):  
Reena Kumari Jha ◽  
Samjhana Thapa ◽  
Roshan Kasti ◽  
Sumi Singh
Keyword(s):  
Body Mass Index ◽  
Reaction Time ◽  
Body Mass ◽  
Normal Weight ◽  
The Body ◽  
Dominant Hand ◽  
Visual Reaction Time ◽  
Indirect Measure ◽  
Young Females ◽  
Visual Reaction

Reaction time is an indirect index of the processing speed of the central nervous system. It is affected by several factors including dominant and non-dominant hands and obesity. Obesity can be measured by body mass index. Thus, the aim of this study was to find out the relationship between body mass index, dominant and non-dominant hand with visual reaction time in healthy young females. A cross-sectional study was conducted in the Department of Physiology, among 89 females. The height and weight were recorded, and the body mass index was calculated. The subjects were divided into four groups, underweight, normal weight, overweight, and obese according to WHO criteria. Visual reaction time was measured using the ruler drop method in milliseconds. The data were analyzed by using the paired t-test and one-way ANOVA using the IBM Statistical Package for the Social Sciences version 22. Out of 89 participants, 26 (29.21%) were underweight, 47 (52.80%) had normal weight, 12 (13.48%) and four (4.49%) were overweight and obese with mean reaction time in the dominant hand and non-dominant hand were (176.75±16.68 vs. 186.58±16.21), (175.12±15.03 vs. 185.43±15.64), (188.74±16.07 vs. 190.70±17.88), and (200.7±9.77 vs. 210.50±9.50) respectively. All participants were right-handers. In right-handers, the right hand reacted faster than the left hand. Reaction time was prolonged in underweight, overweight,and obese; when compared with normal weight individuals. Our study showed that the reaction time of people appears to be influenced by body mass index, dominant, and non-dominant hand, which was an indirect measure of the sensory motor association.

TO STUDY THE RELATION BETWEEN BODY MASS INDEX AND MENSTRUAL PROBLEMS AND THEIR EFFECT ON AUDIOVISUAL REACTION TIME IN YOUNG FEMALES.

2021 ◽  
pp. 14-16
Author(s):  
Manu Saini ◽  
Mamta Mamta ◽  
Ruchi Agrawal ◽  
Sweta Soni
Keyword(s):  
Body Mass Index ◽  
Reaction Time ◽  
Menstrual Cycle ◽  
Body Mass ◽  
Reaction Times ◽  
Young Female ◽  
Visual Reaction Time ◽  
Young Females ◽  
Visual Reaction ◽  
Auditory Reaction Time

Background: Menstruation is an important part of female reproductive cycle. Menstrual problems can affect the normal life of adolescent and young women. Many factors play a role in regulation of normal menstruation like genetic, hormonal factors and Body Mass Index. Reaction time is the time taken by an individual to react to a stimulus. It is an indirect index of processing capabilities of the Central Nervous System and is affected by various factors. Aims & Objective: The present study was undertaken to see the relation between Body Mass Index and menstrual abnormalities and effect on Auditory and Visual reaction time in healthy young females (16-19 yrs.) with the help of Audiovisual reaction time apparatus. Method: 90 young female medical and paramedical students from Mahatma Gandhi Medical College, Jaipur, were selected for this study. A questionnaire was given to them regarding the menstrual status and any abnormalities in menstrual cycle. Students were divided into 3 groups according to their body mass index:- Group 1:- Normal(BMI 18.5 – 24.99 kg/m ), Group 2:- Underweight (BMI < 18.5 kg/m ), Group 3:- 2 2 Overweight (BMI > 25 kg/m ). The reaction times were then noted by audiovisual reaction timer. It was observed that students with 2 Results: High or Low BMI were more likely to have an excessive amount of blood ow and long interval between menstrual cycle as compared to normal BMI group . Auditory Reaction Time (ART) and Visual Reaction Time (VRT) were assessed by using one – way ANOVAwith post – hoc Tukey's HSD test. Both Auditory Reaction Time and Visual Reaction Time were prolonged and highly signicant (p<0.0001) in underweight and overweight female groups in comparison to the normal BMI group. Conclusion: Thus Body Mass Index affects the normal menstrual cycle and the Audio-visual reaction time. Adolescent girls should have a healthy and balanced lifestyle to maintain normal BMI and menstrual cycle.

scholarly journals Influence of Body Mass Index, Handedness and Gender on Ruler Drop Method Reaction Time among Adults

2020 ◽  
Vol 18 (1) ◽  
pp. 108-111
Author(s):  
Reena Kumari Jha ◽  
Samjhana Thapa ◽  
Roshan Kasti ◽  
Ojashwi Nepal
Keyword(s):  
Body Mass Index ◽  
Reaction Time ◽  
Body Mass ◽  
Cross Sectional Study ◽  
Normal Weight ◽  
Cross Sectional ◽  
Left Hand ◽  
Drop Method ◽  
Right Hand ◽  
And Gender

Background: The interval between stimulus and response is called reaction time. It measures the sensorimotor function and performance of an individual. It involves stimulus processing, decision making and response programming. Many factors such as age, gender, handedness, physical fitness, sleep, fatigue, distraction, personality type and type of stimulus have been shown to affect reaction time. Thus the aim of this study was to assess the effect of body mass index, handedness and gender on reaction time.Methods: A cross-sectional study was conducted in the Department of Physiology, Kathmandu University School of Medical Sciences, from October 2019 to December 2019, among 113 student volunteers. Height and weight were recorded and body mass index was then calculated. In ruler drop method, the students were made to sit with their forearm resting on a flat horizontal table surface, with their open hand at the edge of the surface. When the examiner suspended and released the ruler vertically the students were instructed to catch it as quickly as possible.Results: Females had a faster reaction time than males when testing either hand (178.46±17.56 Vs 195.99±15.67; right hand) and (184.25±17.02 Vs 199.57±15.91; left hand). In females, right hand responded faster than left hand. In both gender, reaction time was faster in normal weight compared to overweight individuals but it was statistically insignificant.Conclusions: Females responded faster than males. Right hand had shorter reaction time than left hand in females. Reaction time was insignificantly prolonged in overweight individuals. Keywords: Body mass index; reaction time; ruler drop method

scholarly journals Effect of Body Mass Index on respiratory parameters: A cross-sectional analytical Study

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
Urooj Bhatti ◽  
Zulfiqar Ali Laghari ◽  
Binafsha Manzoor Syed
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Analytical Study ◽  
Standing Position ◽  
Cross Sectional Study ◽  
Normal Weight ◽  
Cross Sectional ◽  
Respiratory Parameters ◽  
Study Results ◽  
The Mean

Objective: To assess association of Body mass index (BMI) on respiratory parameters by performing spirometry in apparently healthy adults living in the district Jamshoro and Hyderabad, Sindh, Pakistan. Methods: A cross sectional study was conducted at Department of Physiology, Liaquat University of Medical and Health Sciences Jamshoro, Pakistan from January to September 2015. A total of 180 underweight, normal, overweight and obese participants, aged between 18 to 40 years were included in the study. BMI was calculated by measuring weight and height by BMI scale (RGZ-160) in standing position. Pulmonary parameters were determined by spirometry on Power lab (AD instruments). Pulmonary parameters were compared between subjects in different categories of BMI. Results: Mean age of participants was 21.83±5.88 years and the mean BMI was 25.10±6.55 kg/m2. The study results revealed that except for FVC, which was not statistically significant (p=0.45) all other respiratory parameters were significantly different (p≤0.05) in all BMI categories. Mean FEV1/FVC ratio (93.1 vs. 90.3, 86.4 and 86.6 respectively) was highest among underweight as compared to overweight, obese and normal weight individuals. The mean VT was 1.22 vs. 0.90, 1.01 and 0.84 respectively, IRV was 1.04 vs. 1.18, 1.23 and 1.20 respectively, IC was 2.26 vs. 2.08, 2.25 and 2.05 respectively, VC was 2.63 vs. 2.42, 2.54 and 2.54 respectively, TLC was 2.98 vs. 3.03 vs. 3.18 and 3.17 respectively among underweight, overweight, obese and normal weight participants. Conclusion: We found a significant association between body mass index and pulmonary function parameters. Obesity causes detrimental effects on respiratory system. doi: https://doi.org/10.12669/pjms.35.6.746 How to cite this:Bhatti U, Laghari ZA, Syed BM. Effect of Body Mass Index on respiratory parameters: A cross-sectional analytical Study. Pak J Med Sci. 2019;35(6):1724-1729. doi: https://doi.org/10.12669/pjms.35.6.746 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals Study of Acute Effect of Caffeine on Cognition among Adults - A Cross Sectional Study from Puducherry, India

2021 ◽  
Vol 10 (34) ◽  
pp. 2924-2927
Author(s):  
Krishnan S ◽  
Smisha Mohan ◽  
Jeneth Berlin Raj T ◽  
Manikandan S
Keyword(s):  
Reaction Time ◽  
Cross Sectional Study ◽  
Visual Reaction Time ◽  
Cross Sectional ◽  
Flicker Fusion Frequency ◽  
Fusion Frequency ◽  
Visual Reaction ◽  
Auditory Reaction Time ◽  
The Subject ◽  
Flicker Fusion

BACKGROUND Information processing has substantial role in performing intellectual activities such as thinking, reasoning, remembering, imagining, or learning. Caffeine being a central nervous system (CNS) stimulant, improves mental performance, especially on alertness, attention, concentration and learning depending on the quantity of intake. In the present study, an attempt was made to study the effect of caffeine on cognitive processing in healthy individuals. METHODS This cross-sectional study was conducted on 50 subjects at Mahatma Gandhi Medical College & Research Institute. Montreal cognitive assessment (MoCA) questionnaire was utilized to assess the level of cognition of each subject. Visual reaction time (VRT), auditory reaction time (ART) and critical fusion frequency (CFF) prior and after consumption of 75 mg of caffeine in 200 ml of milk, pre and post reaction time measurement were taken from the subject to address the difference in reaction time. RESULTS Both visual and auditory reaction time were significantly reduced (P < 0.001) after intake of caffeine. The ability of the subject to appreciate the flickering light stimuli to be steady (critical flicker fusion frequency) had significantly improved to 15 % after caffeine intake. CONCLUSIONS Decrease in visual and auditory reaction and increase in critical flicker fusion frequency values indicate that caffeine increases alertness thereby it may enhance performance efficiency in reasoning, planning, judgment, organizing, concept formation, and problem solving. KEY WORDS Visual Reaction Time, Auditory Reaction Time, MoCA

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