Healthy College Research Articles

Trait emotional intelligence and resilience: gender differences among university students.

Previous studies have reported strong correlations of emotional intelligence (EI) with mental health and wellbeing; it is also apowerful predictor of social functioning and personal adaption. Resilience is the ability to adapt to significant life stressors and is also crucial for maintaining and restoring physical and mental health. The aim of this study was to investigate EI and resilience in healthy university students, with afocus on gender differences in EI and resilience components. A total of 277datasets collected via online questionnaire were analyzed. The questionnaire comprised the Self-Report Emotional Ability Scale (SEAS) developed by Freudenthaler and Neubauer for assessing trait EI facets and the Connor-Davidson Resilience Scale (CD-RISC). Regarding trait EI, females scored significantly higher in the total score for interpersonal emotional skills and in the subscale "Perception of the emotions of others" than males. Men showed significantly higher total scores in intrapersonal emotion-related abilities than women, and in the subscales "Regulation of one's own emotions" and "Control over the expression of one's own emotions." Concerning resilience, female students had significantly higher scores in the CD-RISC subscales "Personal competence and tenacity," "Control," and "Spiritual influence." The intrapersonal trait EI (SEAS) sum score showed asignificant positive correlation with the total scores of the CD-RISC (rs = 0.445, p < 0.001). There were also positive correlations between the interpersonal trait EI sum score and the CD-RISC total score (rs = 0.438, p < 0.001). The results indicate gender differences in specific facets of trait EI and resilience, and an interaction between the two psychological constructs was demonstrated regardless of gender. For prevention of mental disorders and to foster wellbeing, it might be helpful to focus on improvement of self-perception in girls and women, and on supporting emotional awareness towards other people's emotions in boys and men. Further studies in the field should address other populations.

Multilevel factors associated with physical activity participation among Thai university students

This study investigated physical activity (PA) levels in Thai university students and their associated factors at multiple levels. Data of 3,930 university students age ≥18 years analyzed in this study were retrieved from a cross-sectional online survey, namely the ASEAN University Network – Health Promotion Network (AUN–HPN) health behavioral survey. The hierarchical generalized linear model considering clustering effects was applied to examine factors associated with sufficient PA across multiple levels. At the individual level, being female, underweight, and overweight had significantly lower odds of having sufficient PA. Sophomores had 22 % greater odds compared with freshmen. Students engaging in 1–3 and 4–6 sports activities had 3 and almost 4 times respectively higher odds of having sufficient PA. Students engaged in >8 h of sedentary time, and consumed adequate amounts of fruit/vegetables had 70 % and 59 % respectively higher odds of having sufficient PA. At the environmental level, students who traveled inactively to/from university, attended a university with private recreational facilities, and a university that adopted the healthy university framework (HUF) had significantly greater odds of having sufficient PA. A majority of university students were sufficiently physically active, despite gender disparity. When promoting PA among them, focus may be targeted at females and sophomores, and consider addressing the number of sports activities engaged, fruit/vegetable consumption, availability of private university recreational facilities, and adoption of the HUF. The results support the implementation of the AUN–HPN HUF, and future initiatives within the country and the wider network for health and PA promotion.

The recreational inhalation of N2O “whippits” among college students at a Saudi University: prevalence, patterns, and perceived harm

Background Recreational nitrous oxide (N2O) inhalation is a growing trend among young adults, but few studies have explored its prevalence. We aimed to measure the prevalence of recreational N2O inhalation among Saudi university students, its perceived harm, as well its association with gender, college type and use of tobacco and alcohol. Methods A cross-sectional study was conducted among undergraduate students at King Saud University, Riyadh, in September, 2022. Self-administered questionnaires asked about knowing someone who inhaled N2O, awareness of whippits (cream charger bulbs), its recreational use, and perceived side effects. Results A total of 720 students participated (response rate = 82%). About 13.3% of the students heard about N2O, 15.7% knew someone who inhaled N2O recreationally, 7.9% ever inhaled it (8.3% women, and 7.5% men), and 36.8% thought it had no negative health effects. Whippits were the most common mode inhaled. Being a health-college student increased the odds for lifetime recreational inhalation by 97% (AOR = 1.97; 95% CI = 1.10, 3.55), while hookah use increased the odds around three-fold (AOR = 3.27; 95% CI = 1.01, 10.63). Conclusion Saudi university students have a low perception of harm toward recreational N2O inhalation and are experimenting with it, with greater odds for use among healthy college students. Raising community awareness about this behavior is needed.

Comparing the reliability of the Goniometer Pro application and flexicurve for measuring thoracic kyphosis: a cross-sectional study

Aims/Background The most common spinal anomaly is thoracic kyphosis, which frequently occurs in adolescents and older people. The flexicurve is an instrument commonly used by physiotherapists to assess spinal curvature. However, advancing technology, particularly the rise of mobile applications, has resulted in the replacement of traditional methods. This study aimed to investigate and compare the intra-rater and inter-rater reliability of the smartphone-based Goniometer Pro application and the flexicurve in measuring the thoracic kyphosis angle among healthy university students. Methods A total of 30 participants were assessed by two independent raters using the flexicurve and the Goniometer Pro App to measure the thoracic kyphosis angle. Agreement was assessed using intraclass correlation coefficients, standard error of measurement and minimal detectable change. Results The flexicurve demonstrated excellent intra-rater reliability (intraclass correlation coefficients=0.87 and intraclass correlation coefficients=0.85 for two raters) and good inter-rater reliability (intraclass correlation coefficients=0.60). Additionally, the standard error of measurement and the minimal detectable change values indicated small measurement errors for the flexicurve. Similarly, the Goniometer Pro application exhibited excellent intra-rater reliability (intraclass correlation coefficients=0.90 and intraclass correlation coefficients=0.89 for two raters) and inter-rater reliability (intraclass correlation coefficients=0.87), along with small measurement errors indicated by the standard error of the measurement and minimal detectable change values. Conclusions The Goniometer Pro app demonstrated higher inter-rater reliability than the flexicurve when measuring the thoracic kyphosis angle. Consequently, it stands out as a recommended, user-friendly, and time-efficient tool for clinicians involved in the assessment and monitoring of thoracic kyphosis.

Motor units involvement in diaphragm and intercostal muscles during supine and prone posture, and its relationship with oxygen saturation and perfusion index in healthy young female adults

Objectives: Due to gravity and non-gravity variables, human posture influences the distribution of ventilation and perfusion. Gravity enhances the air exchange and posture has an impact on the respiratory muscles’ activity. The goal of the study was to determine the role of neuromuscular activities in respiratory muscles throughout various respiratory states and postures, as well as the degree to which two different lying positions affected the perfusion index (PI) and oxygen saturation (SpO2) level in young, healthy female adults. Materials and Methods: Thirty sedentary healthy female college students, age ranges from 18 to 25 years having no history of pulmonary or neuromuscular diseases voluntarily cooperated and participated in this study. Each participant’s diaphragm and intercostal muscles underwent surface electromyography in the supine and prone postures. The heart rate (HR), SpO2, and PI were measured. Results: When in the supine position, the diaphragm and intercostal muscles both had greater mean root mean square and maximum voluntary contraction values, which is statistically significant (P &lt; 0.05). However, HR, SpO2 level, and PI between supine and prone postures show negligible changes. Conclusion: According to this study, prone posture is advantageous to supine posture since it requires less motor unit activation for proper breathing. Contrarily, the increases in chest cavity capacity are insufficient for the healthy adult female’s calm breathing to result in an increase in SpO2 and PI.

Effects of active video gaming on oxidative stress and antioxidant status in university students

Background and Study Aim. Many findings have demonstrated that several life-threatening diseases, including cardiovascular diseases, obesity-related diseases, and certain types of malignancies, can be prevented by exercise. Reactive oxygen species (ROS) may be the direct or associated factor that causes or prevents these diseases. It is well known that a strenuous and high-intensity acute exercise increases ROS production and intensifies oxidative stress. At this point, the importance of physical activity (PA) and exercise in reducing oxidants and improving antioxidant defense system increasing. The purposes of the current study were to investigate the short term (acute) and long term (chronic) effects of active video gaming (AVG) on oxidative stress indices. Material and Methods. Nine healthy male university students participated in the study. The participants played an AVG as vigorous physical activity (MET &gt; 7) for 20 minutes, three days a week, for 4 weeks. Each participant completed twelve game sessions. Blood samples were obtained just before (after 10 min rest in seated position) and immediately after the game session on the first and the last day of the study. Total oxidant and antioxidant status (TOS and TAS) were determined using an automated measurement method, and the oxidative stress index (OSI) was calculated. Total oxidized guanine (TOG) and superoxide dismutase (SOD) activity were analyzed using commercial kits (Cayman Chemical). Data were analyzed with dependent t-tests and significance was accepted as p&lt;0.05. Results. The SOD activity significantly decreased after the AVG on the first day (4.78 ± 1.26 vs. 3.81 ± 1.80; p=0.026). The TOS (6.62 ± 1.09 vs. 7.30 ± 1.24) and TOG (9.26 ± 2.69 vs. 9.78 ± 2.62) levels increased on the first day, but these alterations were not significant. Additionally, no significant acute changes were observed for the last day of the study Conclusions. The 4-week active video gaming practices did not change the oxidative stress status of pre-game, chronically. Four-week-AVG practice did not change oxidative stress indices significantly in rest.

Comparison of prevalence and risk factors for methicillin-resistant &lt;i&gt;Staphylococcus aureus&lt;/i&gt; in two tertiary institutions, southern Nigeria.

Methicillin-resistant Staphylococcus aureus (MRSA) is an incessant public health challenge with a rising trend in community infection among students. This study compared the prevalence and risk factors for MRSA nasal colonization among students in two tertiary institutions in Southern(east and west) Nigeria. One hundred nasal swab samples were collected from healthy university students and questionnaire aided in the retrieval of demographic and possible risk data. Staphylococcus aureus isolates were identified using morphological and biochemical approach. MRSA was detected phenotypically using both cefoxitin test and double disk synergy test. The antibiotic susceptibility test was done on the MRSA isolates against 9 antibiotics. A total of18% (18/100) and 6% (6/100) Staphylococcus aureus and MRSA isolates was detected respectively. Of which, 8% (4/50) and 4% (2/50) MRSA strains was found in south eastern and south western Nigeria respectively (p = 0.036). The mean age of the students was 21.4 years ±1.81. Overall, the age-group and gender with the highest MRSA colonization was 20-24 years and females respectively. Significant association was found between MRSA colonization and regular hospital visitation, touching of nose/face, and use of antibiotics without doctor's prescription (P &lt;0.05) in both institutions. A total of 100% of the isolates were resistant to clotrimazole. High prevalence (67%) of multi-drug resistance was observed. The prevalence of MRSA in both institutions had significant difference; with the risk factors: regular hospital visitation, touching of nose/face and indiscriminate use of antibiotics among the students.

Effects of short-term exposure to moderate pure carbon dioxide levels on cognitive performance, health symptoms and perceived indoor environment quality

Educational buildings frequently experience elevated CO2 concentrations with inadequate ventilation and high occupancy, sometimes exceeding building guideline levels. Some studies reported detrimental impacts on cognitive performance of indoor CO2 levels, while others did not. To generate further evidence, we conducted an experiment in an environmentally controlled chamber. Sixty-nine healthy university students were exposed individually for 70 min, in three separate sessions, to three CO2 conditions of 600, 1500 and 2100 ppm (crossover design). With fixed ventilation rates, pure CO2 was injected to achieve different exposure levels. A validated neurobehavioral BARS test battery was used to assess participants’ cognitive performance. Participants gave subjective ratings of indoor environment and reported any health symptom through questionnaires. Comparing elevated CO2 levels to 600 ppm, after adjusting for potential confounders, results showed significant improved performance, that is, responses were quicker in two out of ten tests, and no significant differences in accuracy for any test. Under 1500 ppm, participants rated the air quality significantly higher than at 600 ppm, but there were no differences at 2100 ppm. Differences were not significant on thermal sensation, perceived lighting quality, perceived noise level, or health symptoms for comparisons between conditions. Results indicate no clear link between pure CO2 levels below 2100 ppm and cognitive performance, perceived indoor environment quality and health symptoms. The findings are consistent with some prior studies, indicating that pure CO2 below 2100 ppm implies no harm in adults and should not be treated as a potential indoor pollutant in higher educational environments.

Elbow valgus stress during towel drills in college baseball players

In baseball players with elbow injuries, towel drills are clinically used before initiating active throwing exercises to gradually increase stress across the elbow. However, elbow valgus torque during towel drills remains unknown. Moreover, towel drills and active ball throws might have different relationships between biomechanical metrics, such as elbow stress, arm slot, and arm speed. Therefore, the aims of this study were 1) to demonstrate the difference in elbow valgus stress between towel drills and active ball throws and 2) to evaluate the correlation between elbow valgus torque and other biomechanical metrics including arm slot and arm speed in towel drills and active ball throws. Seventeen healthy college baseball players performed three towel drills using a face towel, short foam tube, and long foam tube, followed by full-effort throwing on flat ground. Each participant completed five consecutive trials of each task, and the elbow valgus torque, arm slot, and arm speed were measured using wearable sensors. One-way repeated analysis of variance and post-hoc tests were used to determine the differences in biomechanical metrics among the tasks. Furthermore, the correlation between the elbow valgus torque and other metrics was evaluated using Pearson correlation coefficients. Elbow valgus torque was lower in towel drills compared to that of active ball throws; however, the stress during towel drills using a face towel reached almost 80% of the maximum effort of active ball throws. There was no relationship between elbow valgus stress and arm slot in either the towel or active ball throw tasks. However, a higher arm speed was associated with greater elbow valgus torque in towel drills, whereas no relationship between elbow stress and arm speed was found in active ball throws. Precaution must be taken in athletes following a progressive throwing program because elbow valgus stress reaches almost 80% of the full-effort throw, even when using a face towel in a towel drill. Hence, the subjective intensity must be controlled even in towel drills to gradually increase the medial elbow stress. Moreover, the mechanisms underlying changes in elbow stress may differ between towel drills and active ball throws. Future investigations on the difference between towel drills and active ball throws may help understand the underlying mechanism of alterations in elbow valgus torque during the throwing movement.

Effects of 4weeks of whole-body vibration training on energy expenditure during deep squats of male well-trained students.

From the perspective of energy expenditure, this study investigated the effects of whole-body vibration training on the energy metabolism of deep squats with different weights. Twenty-two healthy male college students with sports experiences were selected and randomly assigned to perform resistance exercise vibration (REV) or resistance exercise (RE) with varying loads two times per week for 4weeks. Oxygen uptake and heart rate were measured before, during, and after exercises using a gas analyzer, and energy expenditure was calculated. The results showed the following: 1) the oxygen uptake and energy expenditure of the REV group were significantly higher than those of the RE group during and 30min after exercise (p < 0.01), respectively, and the excess post-exercise oxygen consumption (EPOC) was also significantly higher than that of the RE group (p < 0.01). 2) Changes in the oxygen uptake and energy expenditure were stable with increasing exercise in both vibration and non-vibration conditions. There was no difference in energy expenditure per unit of body mass versus additional energy per kilogram of body weight (p > 0.05). 3) No significant differences in changing exercise intensity were observed in the REV group compared to those in the RE group during the adjacent incremental load phases of △ (40%-0%) and △ (80%-40%) of load during and 30min after exercise (p > 0.05). Our results suggest that 1) vibration training can increase energy expenditure during low-intensity training and excess post-exercise oxygen consumption, and improve the exercise intensity. 2) The effects on energy expenditure were the same for both weight-bearing and non-weight-bearing deep squats, up to 40% of body mass.

Assessing ‘readiness’ by tracking fluctuations in daily sleep duration and their effects on daily mood, motivation, and sleepiness

Study objectivesConsumer sleep trackers issue daily guidance on ‘readiness’ without clear empirical basis. We investigated how self-rated mood, motivation, and sleepiness (MMS) levels are affected by daily fluctuations in sleep duration, timing, and efficiency and overall sleep regularity. We also determined how temporally specific these associations are. Methods119 healthy university students (64 female, mean age = 22.54 ± 1.74 years) wore a wearable sleep tracker and undertook twice-daily smartphone-delivered ecological momentary assessment of mood, motivation, and sleepiness at post-wake and pre-bedtime timings for 2–6 weeks. Naps and their duration were reported daily. Nocturnal sleep on 2471 nights were examined using multilevel models to uncover within-subject and between-subject associations between sleep duration, timing, efficiency, and nap duration on following day MMS ratings. Time-lagged analyses examined the temporal specificity of these associations. Linear regression models investigated associations between MMS ratings and sleep variability, controlling for sleep duration. ResultsNocturnal sleep durations were short (6.03 ± 0.71 h), and bedtimes were late (1:42AM ± 1:05). Within-subjects, nocturnal sleep longer than a person's average was associated with better mood, higher motivation, and lower sleepiness after waking. Effects of such longer sleep duration lingered for mood and sleepiness till the pre-bedtime window (all Ps < .005) but did not extend to the next day. Between-subjects, higher intraindividual sleep variability, but not sleep duration, was associated with poorer mood and lower motivation after waking. Longer average sleep duration was associated with less sleepiness after waking and lower motivation pre-bedtime (all Ps < .05). Longer naps reduced post-nap sleepiness and improved mood. Controlling for nocturnal sleep duration, longer naps also associated with lower post-waking sleepiness on the following day. ConclusionsPositive connections between nocturnal sleep and nap duration with MMS are temporally circumscribed, lending credence to the construction of sleep-based, daily ‘readiness’ scores. Higher sleep duration variability lowers an individual's post waking mood and motivation. Clinical trial idClinicalTrials.gov NCT04880629.

Insulin Resistance in Association with Metabolic Syndrome in Wasit University Students in Iraq

In Iraq 1.4 million of people have diabetes, the prevalence of T2DM was ranged (8.5%—13.9%), and the cluster of metabolic abnormalities has long been identified as the risk factors for type 2 diabetes and is now commonly described as metabolic syndrome/MetS. Insulin resistance takes a key role in the process of the MetS and has even been hypothesized as its underlying cause. Clinical and epidemiologic studies also indicate that obesity and life style habit might be correlated with IR. This study examined the relationship between IR and MetS in a sample of young, healthy university students in Iraq. It discovered that the severity of IR is positively correlated with the clustering of MetS risk factors in Iraqi students, suggesting that the IR index could be used as a diagnostic tool to identify the young adult who is at higher risk of developing IR and help prevent metabolic disorders that may develop secondary to IR. Insulin resistance was highly correlated with dietary product use, high BMI, and physical inactivity, investigating the IR in an early stage is crucial for trying to stop the disease progression into chronic disease.

Validity and reliability of the Persian version of the machiavellian personality scale and its association with social adjustment and risky behaviors in Iranian college students

ObjectiveThe present study aims to develop and assess the psychometric properties of the Persian version of the Machiavellian Personality Scale (P-MPS), and evaluate its relationship with social adjustment and risky behaviors in Iranian college students.MethodsParticipants were 500 healthy college students (270 females and 230 males) from medical and non-medical universities in Sanandaj, Iran. They completed the P-MPS, the social adjustment subscale of the Bell Adjustment Inventory, and the Youth Risk Behavior Surveillance System (YRBSS) questionnaire. The factor structure of the P-MPS was evaluated by exploratory factor analysis followed by confirmatory factor analysis (CFA). Cronbach’s alpha coefficient was used to examine the internal consistency of the P-MPS and Pearson correlation test was used to investigate the relationship of the P-MPS score with the scores of social adjustment subscale and YRBSS.ResultsThe P-MPS showed good content validity (Content validity ratio = 0.73, content validity index = 0.90), construct validity, and internal consistency (α = 0.802). The CFA results supported the four-factor solution of the questionnaire. The total score of P-MPS and its dimensions showed a significant negative relationship with social adjustment (p < 0.05). Moreover, its score was significantly correlated with risky behaviors (p < 0.05).ConclusionThe Persian version of MPS can be used for assessing Machiavellianism in the Iranian population.

Coagulation Properties of Blood in Healthy University Students in Port Harcourt

Despite the fact that the World Health Organization (WHO) had provided an average global reference data of Coagulation Properties (CP) of blood in the world, available statistics still suggest a significant discrepancy in CPs of blood among various age groups, socioeconomic classes and races in different locations of the world. Here in Port Harcourt Nigeria, absence of such local reference data had continued to pose over-reliance on the WHO global standards without recourse to our distinctive geospatial and socioeconomic peculiarities. As a result, this study therefore investigated coagulation properties of blood in healthy university students in Port Harcourt. A total of 157 participants were recruited into the study using Stratified Random Sampling techniques. They were administered well-structured questionnaires for an on-the-spot data collections. Thereafter, 5ml of venous blood were aspirated for various coagulation properties (Bleeding, clotting and Prothrombin times and Platelets Counts) investigation. Clotting and bleeding times were measured instantly using capillary and Ivy’s methods respectively. Results from the study revealed a significant (ρ≤0.05) coagulation difference between the WHO standards and both gender (male, 311032 ± 17300* and female, 293600 ± 12800*) for platelets counts. In the age groups, only ≥40 group were significant to all CP (10.30 ± 0.00* for BT, 10.00 ± 1.30* for CT, 10.22 ± 2.88* for PT and 190320.73 ± 1886.45* for PC). Similar significant result was also noted for Obese Class 2, morbid obesity and protein diet groups as compared with the Control. This study therefore concluded that CP significantly vary with the WHO standards, age, gender, BMI and nutritional background and recommended similar study be conducted in other locations in Nigeria and Africa.

Effects of shoe collar types on ankle and knee biomechanics characteristics when performing the side-step cutting task

ABSTRACT This study aimed to examine the effect of football shoes with different collar types on ankle and knee kinematic and kinetics features during 45° and 135° side-step cutting tasks. Fifteen healthy college football players volunteered for the study. Each participant was instructed to perform side-step cutting tasks with high, low, and no collar football shoes. The kinematic and ground reaction force data were measured using a Vicon motion capture system and a Kistler force plate, respectively. Two-way MANOVAs with repeated measures were used to examine the effect of shoe collar type and task conditions. There were no interaction effects. The high collar football shoe showed decreased ankle range of motion in the sagittal plane (p = 0.010) and peak ankle external rotation moment (p = 0.009) compared to the no collar football shoe. The high (p = 0.025) and low (p = 0.029) collar football shoes presented greater peak ankle external rotation angles than the no collar football shoe. These results imply that football shoes with high collars made of high intensity knitted fabric could be used to restrict ankle joint movement, with potential implications for decreasing the risk of ankle sprain injuries in football players.

The prevalence and associated factors of sleep deprivation among healthy college students in China: a cross-sectional survey.

The prevalence of sleep deprivation among college students is increasing and has a few associated factors. The present study analyzed 2,142 college students from 28 provinces in China. The Chinese version of the Pittsburgh Sleep Quality Index (PSQI) was used to assess sleep duration. Binary logistic regression was conducted to explore the sleep deprivation related factors. Age and gender were controlled as covariates. Among the 2,142 college students (27.7% male, 72.3% female), 1,620 (75.6%) reported the average sleep duration was below 7 h per day for one month, 49.3% (1,055/2,142) slept 6∼7 h (contains 6 h), 21.0% (449/2,142) slept 5∼6 h (contains 5 h), and 5.4% (116/2,142) slept <5 h. Age increased the risk of sleep deprivation, the adjusted odds ratio = 1.05 (95% CI [1.01∼1.10]). The adjusted odds ratio (A-OR) for sleep deprivation was higher for students of more than 60 min nap duration per day (A-OR = 2.35, 95% CI [1.45∼3.80]), and age growth (A-OR = 1.05, 95% CI [1.01∼1.10]). In contrast, A-ORs were lower among sleeping inconsistency between work and rest days (A-OR = 0.61, 95% CI [0.49∼0.75]), accustomed to staying up late (A-OR = 0.45, 95% CI [0.36∼0.57]), staying up late to work or study (A-OR = 0.62, 95% CI [0.49∼0.78]), stress (A-OR = 0.75, 95% CI [0.58∼0.98]), and repeated thoughts in bed had (A-OR = 0.79, 95% CI [0.62∼0.99]). Sleep deprivation is extremely common among healthy college students in China. It is necessary to perform methods maintaining enough sleep due to the current high incidence of sleep deprivation. Controlling the nap duration and getting enough sleep on rest days to replace missing hours of sleep on workdays might improve college students' sleep.

Brain-derived neurotrophic factor genetic polymorphism rs6265 and creativity.

The protein brain-derived neurotrophic factor (BDNF) promotes neural plasticity of the central nervous system and plays an important role for learning and memory. A single nucleotide polymorphism (rs6265) at position 66 in the pro-region of the human BDNF gene, resulting in a substitution of the amino acid valine (val) with methionine (met), leads to attenuated BDNF secretion and has been associated with reduced neurocognitive function. Inhomogeneous results have been found regarding the effect of the BDNF genotype on behavior. We determined the BDNF genotype and performance on the Compound Remote Associate (CRA) task as a common measure of creativity in 76 healthy university students. In our main analyses, we did not find significant differences between met-carriers (n = 30) and non-met carriers (n = 46). In a secondary analysis, we found that met-carriers had a slower solution time (medium effect size) for items of medium difficulty. Our results suggest that met-carriers and non-met-carriers do not generally differ regarding their creativity, but non-met-carriers may have a certain advantage when it comes to moderately difficult problems. The wider literature suggests that both genetic variants come with advantages and disadvantages. Future research needs to sharpen our understanding of the disadvantages and, potentially, advantages met allele carriers may have.

The skin surface microcirculation of conception vessel, governor vessel and thoroughfare vessel in patients with primary dysmenorrhea

To observe the skin surface microcirculation of acupoints of conception vessel, governor vessel and thoroughfare vessel in patients with primary dysmenorrhea using laser speckle contrast imaging (LSCI), and provide acupoint selection basis of acupuncture-moxibustion for primary dysmenorrhea. Ninety-nine healthy female college students with regular menstrual cycles (normal group) and 94 female college students with primary dysmenorrhea (dysmenorrhea group) were recruited. Before menstrual period, on the first day of menstruation, and on the third day after menstruation, LSCI was used to observe the surface microcirculation at the abdominal acupoints of conception vessel, i. e. Yinjiao (CV 7), Qihai (CV 6), Shimen (CV 5), Guanyuan (CV 4), Zhongji (CV 3) and Qugou (CV 2), acupoints of thoroughfare vessel, i. e. Huangshu (KI 16), Zhongzhu (KI 15), Siman (KI 14), Qixue (KI 13), Dahe (KI 12), Henggu (KI 11) and acupoints of lumbosacral region of governor vessel, i. e. Xuanshu (GV 5), Mingmen (GV 4), Yaoyangguan (GV 3), Yaoshu (GV 2) as well as two non-acupoints. Before menstrual period, there was no significant difference in the surface blood perfusion of the acupoints between the dysmenorrhea group and the normal group (P>0.05). On the first day of menstruation, the surface blood perfusion of Xuanshu (GV 5), Mingmen (GV 4), Yaoyangguan (GV 3) and right Huangshu (KI 16) in the dysmenorrhea group was higher than that in the normal group (P<0.05, P<0.01). On the third day after menstruation, the surface blood perfusion of the right Henggu (KI 11) in the dysmenorrhea group was lower than that in the normal group (P<0.05). In patients with primary dysmenorrhea, on the first day of menstruation, the surface blood perfusion of Xuanshu (GV 5), Mingmen (GV 4), Yaoyangguan (GV 3) of governor vessel, and the right Huangshu (KI 16) of thoroughfare vessel is increased, while on the third day after menstruation, the surface blood perfusion of the right Henggu (KI 11) of thoroughfare vessel is decreased. These findings might provide a basis for acupoint selection in the acupuncture-moxibustion treatment of primary dysmenorrhea.

Which is More Important, Proposer Identity or Allocation Motive? Event-Related Potential in Economic Decision-Making.

Most studies have supported the view that individuals prefer to reward the in-group and discriminate against the out-group in response to unfair offers in the Ultimatum Game. However, the current study advanced a different view, that is, the "black sheep effect", in which in-group members were punished more severely compared with out-group members. This study aimed to incorporate proposer identity and allocation motive as possible explanations for offer rejection. In the current study, the in-group and out-group identities were distinguished by their health condition, and the allocation motive was defined according to its benefit maximization. With a total of 89 healthy college student participants, a mixed design of 2 (proposer identity: out-group vs in-group) × 2 (allocation motive: selfish vs random) × 2 (offer type: unfair vs fair) was used in the Ultimatum Game. Event-related potential (ERP) technology was used, and ERPs were recorded while participants processed the task. The behavioral result showed that the "black sheep effect" was found on the fair offer when a random allocation motive was used. Our ERP result suggested that feedback-related negativity (FRN) and P300 were modulated by proposer identity but not by allocation motive. However, the allocation motive interacted with proposer identity affecting FRN and P300 when the fair offer was proposed. These findings demonstrated that the "black sheep effect" was related to the experience of the out-group member, such as disadvantage or distress, but it was also modulated by allocation motive. Meanwhile, the out-group (depressed college students) captured more attention because they violated individual expectations, according to the P300. This finding plays an integral role in understanding the mechanism of response to the "black sheep effect".

Development and Reliability of a Visual-Cognitive Reactive Triple Hop Test.

Current lower-extremity return to sport testing primarily considers the physical status of an athlete; however, sport participation requires continuous cognitive dual-task engagement. Therefore, the purpose was to develop and evaluate the reliability of a visual-cognitive reactive (VCR) triple hop test that simulates the typical sport demand of combined online visual-cognitive processing and neuromuscular control to improve return to sport testing after lower-extremity injury. Test-retest reliability. Twenty-one healthy college students (11 females, 23.5 [3.7]y, 1.73 [0.12]m, 73.0 [16.8]kg, Tegner Activity Scale 5.5 [1.1] points) participated. Participants performed a single-leg triple hop with and without a VCR dual task. The VCR task incorporated the FitLight system to challenge peripheral response inhibition and central working memory. Maximum hop distance, reaction time, cognitive errors, and physical errors were measured. Two identical testing visits were separated by 12 to 17days (14 [1]d). Traditional triple hop (intraclass correlation coefficients: ICC(3,1) = .96 [.91-.99]; standard error of the measurement = 16.99cm) and the VCR triple hop (intraclass correlation coefficients(3,1) = .92 [.82-.97]; standard error of the measurement = 24.10cm) both demonstrated excellent reliability for the maximum hop distance, and moderate reliability for the VCR triple hop reaction time (intraclass correlation coefficients(3,1) = .62 [.09-.84]; standard error of the measurement = 0.09s). On average, the VCR triple hop resulted in a hop distance deficit of 8.17% (36.4 [5.1]cm; P < .05, d = 0.55) relative to the traditional triple hop. Hop distance on the VCR triple hop had excellent test-retest reliability and induced a significant physical performance deficit when compared with the traditional triple hop assessment. The VCR triple hop reaction time also demonstrated moderate reliability.