Dual Tasking during Trip Recovery and Obstacle Clearance among Young, Healthy Adults in Human Factors Research

Arachchige, Sachini N. K. Kodithuwakku; Chander, Harish; Knight, Adam C.; Burch, Reuben F.; Chen, Chih-Chia; Reneker, Jennifer C.

doi:10.3390/ijerph181910144

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…Several limitations of the current study include the testing of a healthy, young population who may have a lower impact due to noise and physical workload, whereas individuals with any neurological, auditory, or vestibular disorders or an elderly population may behave differently with noise and physical workload exposure [32]. Therefore, the observed results can only be generalized to the population tested.…”

Section: Limitations Future Directions and Applicationsmentioning

confidence: 96%

Noise Interference Impacts Simple and Choice Response Times during a Lower Extremity Cognitive–Motor Task

Chander

McCrory

Chandler

et al. 2023

CTN

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Cognitive performance is negatively affected by the presence of noise, which is seen as a distractor and a stressor, especially in hazardous occupational environments. The addition of musculoskeletal fatigue that commonly accompanies occupational work due to noise interruption can further elevate risk and compromise safety. The purpose of the study was to investigate the impact of both individual and a combination of noise interference and physical workload on simple and choice response time tasks. Sixteen healthy male and female participants (age: 20 ± 1 years; height: 169.48 ± 8.2 cm; weight: 67.93 ± 12.7 kg) performed a simple (SRT) and choice response task (CRT) with three Blazepod™ light response time systems by striking with the dominant lower extremity from a seated position while listening to noises from a construction site (65–85dB) through headphones. Participants then performed a low-intensity musculoskeletal fatigue task and completed the above measures again. Response times (RT) (ms) from three trials of SRT and CRT, both without and with noise interference, before (PRE) and after the workload (POST), were averaged, and a 2 (Noise) × 2 (workload) × 2 (task) repeated measure ANOVA and a 2 (Noise) × 2 (workload) repeated measure ANOVA were performed for SRT and CRT, respectively, using JASP at an alpha level of 0.05. Results revealed a significant interaction between workload task (p = 0.041), as well as a main effect significance for the workload (p = 0.007) and noise (p = 0.044). The main effect significance also existed for workload in SRT (p = 0.009) and for noise in CRT (p = 0.002). In SRT, RT was significantly faster during the POST fatigue measure, suggesting a possible cognitive arousal and a learning effect improvement rather than a negative fatigue effect. In both SRT and CRT, as well as individually in CRT, RT was significantly slower due to noise interruption, negatively impacting performance, especially in the more challenging CRT compared to SRT. Thus, findings from the current study suggest that the impact of noise interruption is significant when the complexity of the response task is greater, and the potential cognitive arousal due to the workload and potential learning effects may influence response time performances. Finally, a lower extremity cognitive–motor task demonstrates response time behavior similar to such upper extremity cognitive–motor tasks.

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Section: Limitations Future Directions and Applicationsmentioning

confidence: 96%

Noise Interference Impacts Simple and Choice Response Times during a Lower Extremity Cognitive–Motor Task

Chander

McCrory

Chandler

et al. 2023

CTN

Self Cite

View full text Add to dashboard Cite

show abstract

“…Stumbling over obstacles frequently occurs due to decreased toe-obstacle clearance [3] and weakened lower limb muscle power [4]; furthermore, lack of attention to obstacles is also a major factor [5,6]. Several studies examined the influence of attention on obstacle avoidance behavior by dual-task paradigm [7][8][9][10]. Lo and Chou [9] reported that the visual attention required to perform dual tasks leads to distinct modification of motor performance during obstacle crossing.…”

Section: Introductionmentioning

confidence: 99%

Transcranial direct current stimulation to dorsolateral prefrontal cortex improves performance of obstacle avoidance gait task

Matsuura,

Shinoda,

Karita

et al. 2023

NeuroReport

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We aimed to investigate the effect of dual-task interference between cognitive and obstacle avoidance walking tasks, and the effect of transcranial direct current stimulation (tDCS) on the performance of this cognitive-motor dual task. The healthy young subjects participated in a single task consisting of a three-digit subtraction task (e.g. 783 − 7) or a 15-m track with six 7.5-cm high obstacles. Then, the subjects performed two single tasks simultaneously as dual tasks, before and after sham and anodal tDCS (2 mA, 20 min) to left dorsolateral prefrontal cortex (DLPFC, the F3 region of the 10/20 electroencephalogram electrode placement system). The effect of tDCS on each outcome (number of correct answers, the clearance height above the obstacle, and foot placement position) was analyzed using repeated-measures analysis of variance. Model effects included tDCS (real, sham), time (pre-, post-tDCS), and task (single task, dual task) conditions. A significant difference in the tDCS, time, and task conditions was observed; the correct number of subtraction tasks increased, and the clearance height and the distance between the obstacle and foot decreased in front of the obstacle. Our findings suggest that dual task performance is causally related to left DLPFC activation under complicated walking tasks and tDCS over this cortical area increases overloaded its information processing capacity.

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Relationship between anemia and occupational fall injuries in female part-time employees: an observational study of large supermarket stores in Japan

Shima,

Kawatsu,

Morino

et al. 2024

Journal of Occupational Health

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Background: Occupational fall injuries have recently increased markedly in Japan, together with an increase in later-middle-aged females in the labor market. However, the association between anemia, which is prevalent among Japanese females, and falls is unclear. Here, we investigated the association between anemia and occupational fall injuries. Methods: Participants were 6,780 part-time female employees aged 35-64 working in Japanese supermarket stores of a retail company who had at least one health checkup each year between 2017 and 2022. Anemia was defined as hemoglobin (Hb) <12.0 g/dL (Mild: 11.0-11.9 g/dL, Moderate-severe: Hb<11.0g/dL). Fall injuries were defined as slips, trips and falls on the same level, requiring medical attention based on the occupational injury data by the company. Incidence rate ratios (IRRs) for falls were estimated using multilevel Poisson regression, adjusting age and body mass index (BMI). Results: The annual rate of occupational fall injuries was 0.7%. The adjusted IRR and 95% confidence intervals (CI) for occupational fall injuries among participants with anemia was 1.71 (1.12-2.60). When dividing anemia into two groups, IRR (95%CI) was 1.46 (0.84-2.53) for Mild anemia and 2.13 (1.18-3.84) for Moderate-severe anemia (p for trend=0.007). Conclusion: In this observational study of employees of large Japanese supermarket stores, anemia was significantly associated with a higher incidence of occupational falls. Our findings suggest the importance of anemia in the prevention of occupational falls.

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Dual Tasking during Trip Recovery and Obstacle Clearance among Young, Healthy Adults in Human Factors Research

Cited by 3 publications

References 33 publications

Noise Interference Impacts Simple and Choice Response Times during a Lower Extremity Cognitive–Motor Task

Noise Interference Impacts Simple and Choice Response Times during a Lower Extremity Cognitive–Motor Task

Transcranial direct current stimulation to dorsolateral prefrontal cortex improves performance of obstacle avoidance gait task

Relationship between anemia and occupational fall injuries in female part-time employees: an observational study of large supermarket stores in Japan

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