Combined effect of whole-body vibration and ambient lighting on human discomfort, heart rate, and reaction time

Monazzam, Mohammad Reza; Shoja, E; Zakerian, Seyed Abolfazl; Foroushani, Abbas Rahimi; Shoja, M R; Gharaee, Masoumeh; Asgari, Amin

doi:10.1007/s00420-018-1301-z

Cited by 15 publications

(9 citation statements)

References 18 publications

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“…The basic principle of WBV is that subjects are susceptible to three-dimensional vibration stimulation when they stand on a vibrating platform. Vibration then stimulates muscle spindles and activates α-motoneurons [4]. Muscle contraction is often stimulated by a stretch reflex during vibration.…”

Section: Introductionmentioning

confidence: 99%

Effects of Whole-Body Vibration on Lumbar-Abdominal Muscles Activation in Healthy Young Adults: A Pilot Study

et al. 2019

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BackgroundThis study investigated how whole-body vibration (WBV), exercise, and their interactions influence core muscle activity in healthy young adults.Material/MethodsTwenty-three healthy young adults (8 males and 15 females; age: 21.87±2.33 years) participated in the study. The activities of muscle multifidi (MM), rectus abdominis muscle (RM), erector spinae (ES), abdominis obliquus externus (AOE), and abdominis obliquus internus (AOI) were measured through surface electromyography (sEMG) while participants were performing 4 different exercise forms under 3 WBV conditions (condition 1: 5 Hz, 2 mm; condition 2: 10 Hz, 2 mm; and condition 3: 15 Hz, 2 mm) and a no-WBV condition in single experimental sessions.ResultThe WBV frequency of 15 Hz is the best vibration stimulation for core muscles in all of the exercises (P<0.05). Single bridge is a better exercise for RM and AOE (P<0.05) compared with other exercises, and crunches is the best exercise for MM, AOI, and ES (P<0.05). Significant interaction effect was observed in different frequencies and exercises (P>0.05) except for AOI (F=0.990, P=0.378).ConclusionsHigh vibration frequencies can lead to enhanced exercise benefits within an appropriate frequency range, and different exercises have diverse effects on various muscles. Single bridge and crunches are appropriate exercise forms for lumbar-abdominal muscles.

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Section: Introductionmentioning

confidence: 99%

Effects of Whole-Body Vibration on Lumbar-Abdominal Muscles Activation in Healthy Young Adults: A Pilot Study

et al. 2019

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“…These interactions are indicating the theoretical possibility that sound, heat, and internal light directly affect cognitive processes without general or partial mediation, at least not in the way that the inverse U hypothesis suggests. In the same context, Monazzam et al 47 have observed that an increase in vibration acceleration significantly improved discomfort and heart rate; however, it did not affect the reaction time. The results of the referred study also suggested that vibration and illuminance did not have a significant combined effect on the variables of discomfort, heart rate, and reaction time.…”

Section: Discussionmentioning

confidence: 94%

Effects of Light on Attention and Reaction Time: A Systematic Review

et al. 2021

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Background: Accuracy, speed, efficiency, and applicability of activities in the workplace are among the most important effective factors on people's productivity, which is in turn affected by environmental factors, such as light. Therefore, the present research aimed to review the studies performed about the effects of light on attention and reaction time. Sudy Design: A systematic review. Methods: This review study systematically searched articles from 2000-2019 in databases of Google Scholar, ISC, SID, Magiran, Web of Science, Science Direct, PubMed, and Scopus using keywords of light, lighting, attention, and reaction time. The titles and abstracts of articles containing relevant results over the past 20 years were extracted. Thereafter, they were categorized and analyzed according to the title, author name, publication year, study method, study type, and evaluation results. Results: Based on the results, the light with shorter wavelengths, higher intensity, and higher color temperature led to suppressed melatonin, higher consciousness, less somnolence, increased attention, and faster reaction time. Simultaneous exposure to harmful levels of environmental factors affects cognitive and physiological parameters, acting independently with a separate mechanism or synergistically with a similar mechanism. The best light in the regulation of psychological, biological, and cognitive processes is bright daylight in the morning with a short wavelength, high intensity, and more lasting effects. Conclusion: As evidenced by the obtained results, light is a powerful modulator of non-visual performance in cognitive tasks. The wavelength, color temperature, and light intensity modulate brain responses to cognitive tasks, including attention and reaction time. Therefore, these parameters, along with personal and environmental factors, should be considered in designing and using light.

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“…Both durations have not shown any significant difference but showed medium-sized effects of condition with the peak plantar flexor torque [39]. A previous study has focused on the individual's characteristics based on a previous study conducted in athletes [42]. These findings indicate that participants who showed a significant increase in contractile properties are not necessarily those showing the most significant performance improvements following acute exercise [39].…”

Section: Discussionmentioning

confidence: 99%

“…Based on a previous study, the vibratory device was placed over the mid-belly of the biceps brachii, and considering its flexible design with the strap and device itself, the muscles applied with vibration can be enclosed. The vibratory panels of the device were placed lateral, medial, superior, and inferior to the center of the muscle [42].…”

Section: Discussionmentioning

confidence: 99%

The immediate effects of local vibration on ankle plantar flexor muscle activation and peak torque in healthy adults

Cho

Yoon

Yoo

et al. 2020

PTRS

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Objective: The vibration device is one of the most commonly used warm-up devices not only for healthy athletes but also for healthy individuals. Therefore, this study aimed to investigate the immediate effects of local vibration on ankle plantar flexor muscle activation and peak torque in healthy adults. Design: One-group pretest-posttest design. Methods: This was a single-group study comprising a total of 36 (16 males and 20 females) participants. The average age of the 36 participants was 22.3 years. All the participants' concentric and eccentric peak torques of the gastrocnemius lateralis muscle were measured using an isokinetic device. Simultaneously, the participants' muscle activity was measured by surface electromyography. After the pre-experimental data were collected, the participants comfortably sat on the prepared chair with their hips and knees flexed to 90°. While in sitting position, local vibration was applied for 10 minutes using a 1:1 ratio intermittent pulsing mode device based on a previous study. Then, the post-experimental data were collected immediately after the local vibration by performing a similar process performed during the pre-experimental data collection. Results: The results showed a significant difference in muscle activity and eccentric peak torque (p<0.05). On the contrary, concentric peak torque values showed an insignificant difference with pre-and post-value. Conclusions: The results of this study demonstrated that local vibration can be possibly considered as one of the effective ways to increase ankle plantar flexor muscle activity and muscle performance, specifically the eccentric peak torque, in healthy adults.

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Combined effect of whole-body vibration and ambient lighting on human discomfort, heart rate, and reaction time

Cited by 15 publications

References 18 publications

Effects of Whole-Body Vibration on Lumbar-Abdominal Muscles Activation in Healthy Young Adults: A Pilot Study

Effects of Whole-Body Vibration on Lumbar-Abdominal Muscles Activation in Healthy Young Adults: A Pilot Study

Effects of Light on Attention and Reaction Time: A Systematic Review

The immediate effects of local vibration on ankle plantar flexor muscle activation and peak torque in healthy adults

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