Afreen Begum H Itagi1, Navin A Patil2, Rahul K Kotian3, Suneel Kumar Reddy4, Shardul Abhyankar5, Reena Sherin Parveen2. 1. Department of Physiology, All India Institute of Medical Sciences, Mangalagiri, India. 2. Department of Pharmacology, K.M.C. Manipal, Manipal University, Manipal, India. 3. Department of Medical Imaging Technology, Manipal School of Allied Health Sciences, Manipal University, Manipal, India. 4. Department of Pharmacology, JJM Medical college, Davanagere, India. 5. Department of Occupational Therapy, Manipal School of Allied Health Sciences, Manipal University, Manipal, India.
Abstract
BACKGROUND/AIMS: Physical exhaustion is not always peripheral, and it is the brain that causes the sensation of fatigue either due to decrease of metabolic resources or due to central activation process that regulates attention and performance. This study was undertaken to observe the variations in event-related potentials (ERPs) and cognitive performance after an exhausting physical exercise. METHODS: A total of 60 healthy young adult subjects were included in the study. The study was conducted in 2 phases with at least a week gap between the phases. The participants answered a Multidimensional Fatigue Inventory (MFI-20) questionnaire before and after trials in each phase to measure the induced physical exhaustion. In phase I (control trial), the ERP data were processed using P300, Standard auditory "oddball paradigm," on computerized evoked potential recorder (RMS EMG MK-2) using 10/20 system to know the engagement of attention after which participants were given to perform cognitive tasks such as "Stroop Test, Trial Making Test and Mini Mental State Examination." In Phase II (exercise trial), the participants were instructed to cycle as hard as they could, till they could not continue anymore, which was followed by recording of P300-evoked potentials and performance of cognitive tasks as in Phase I. Paired t test was used to compare between any dependent variables. RESULTS: Fatigue-related subjective measures (MFI-20) showed that both mental and physical exhaustion were significantly greater in the exercise-involved cognitive trial than in the control trial. Lower P300 latencies reflect faster reaction time; however, their response accuracies were poorer resulting in poorer cognitive performances. Participants subjected to control trial performed better in terms of higher percentage accuracy but with slow reaction time. CONCLUSION: The participants experienced more fatigue physically and mentally during the exercise that involved cognitive tasks. An apparent decrease in attention based on decreased percentage accuracy of response was evident, implying that fatigue, performance, and attention are interdependent.
BACKGROUND/AIMS: Physical exhaustion is not always peripheral, and it is the brain that causes the sensation of fatigue either due to decrease of metabolic resources or due to central activation process that regulates attention and performance. This study was undertaken to observe the variations in event-related potentials (ERPs) and cognitive performance after an exhausting physical exercise. METHODS: A total of 60 healthy young adult subjects were included in the study. The study was conducted in 2 phases with at least a week gap between the phases. The participants answered a Multidimensional Fatigue Inventory (MFI-20) questionnaire before and after trials in each phase to measure the induced physical exhaustion. In phase I (control trial), the ERP data were processed using P300, Standard auditory "oddball paradigm," on computerized evoked potential recorder (RMS EMG MK-2) using 10/20 system to know the engagement of attention after which participants were given to perform cognitive tasks such as "Stroop Test, Trial Making Test and Mini Mental State Examination." In Phase II (exercise trial), the participants were instructed to cycle as hard as they could, till they could not continue anymore, which was followed by recording of P300-evoked potentials and performance of cognitive tasks as in Phase I. Paired t test was used to compare between any dependent variables. RESULTS: Fatigue-related subjective measures (MFI-20) showed that both mental and physical exhaustion were significantly greater in the exercise-involved cognitive trial than in the control trial. Lower P300 latencies reflect faster reaction time; however, their response accuracies were poorer resulting in poorer cognitive performances. Participants subjected to control trial performed better in terms of higher percentage accuracy but with slow reaction time. CONCLUSION: The participants experienced more fatigue physically and mentally during the exercise that involved cognitive tasks. An apparent decrease in attention based on decreased percentage accuracy of response was evident, implying that fatigue, performance, and attention are interdependent.
Entities:
Keywords:
Cognitive performance; Event related potential; Exhaustion; Stroop test
Authors: Marinella Coco; Andrea Buscemi; Claudia Savia Guerrera; Donatella Di Corrado; Paolo Cavallari; Agata Zappalà; Santo Di Nuovo; Rosalba Parenti; Tiziana Maci; Grazia Razza; Maria Cristina Petralia; Vincenzo Perciavalle; Valentina Perciavalle Journal: Int J Environ Res Public Health Date: 2020-01-31 Impact factor: 3.390
Authors: Marinella Coco; Andrea Buscemi; Paolo Cavallari; Simona Massimino; Sergio Rinella; Marta Maria Tortorici; Tiziana Maci; Vincenzo Perciavalle; Matej Tusak; Donatella Di Corrado; Valentina Perciavalle; Agata Zappalà Journal: Front Psychol Date: 2020-10-30