scholarly journals The Effect of an 8-Week Hamstring Weight Training on H/Q ratio and H/Q FI of Male College Students

2021 ◽  
Vol 30 (3) ◽  
pp. 295-302
Author(s):  
Seung-Ri Kim ◽  
Hyun-Joo Kang
Keyword(s):  
College Students ◽  
Knee Joint ◽  
Weight Training ◽  
Statistical Significance ◽  
Peak Torque ◽  
Control Group ◽  
Significant Difference ◽  
Male College ◽  
The Difference ◽  
Male College Students

PURPOSE: This study aimed to examine the effects on the hamstring/quadriceps ratio (H/Q ratio) and H/Q ratio fatigue index (H/Q FI) of the knee joint of an 8-week weight training to improve the hamstring muscles of male college students.METHODS: Twenty male college students were divided into two groups: an exercise group (EG) and a control group (CG). The EG participated in an 8-week hamstring weight training program, working out twice a week, 60 min per session, with a 60–80% 1RM and 12–16 RPE intensity. The peak torque, H/Q ratio, and H/Q FI were measured, and a t-test was used to verify the statistical significance of the difference between the pre- and post-intervention results.RESULTS: The right flexor peak torque at 60°/sec increased by 14.10±9.60%BW in the EG and decreased by −9.00±16.55%BW in the CG, showing a significant difference between the groups (<i>p</i><0.01). The left flexor peak torque increased by 6.60±12.31%BW in the EG and decreased by −5.10±10.68%BW in the CG, showing a significant difference between the groups (<i>p</i><0.05). The left extensor peak torque decreased by −5.40±19.53%BW in the EG and by −28.40±25.70%BW in the CG, showing a significant difference between the groups (<i>p</i><0.05). The H/Q ratios tended to increase, but the difference was not significant.CONCLUSIONS: To prevent injuries and stabilize the knee joint, the central joint of the lower extremity that plays an important role in daily life and sports activities, hamstring weight training can be performed to maintain the H/Q ratio within the normal range.

Minimal Familiarity and Left-Right Judgment of Paintings

1966 ◽  
Vol 22 (1) ◽  
pp. 105-106 ◽  
Author(s):  
Bruce M. Ross
Keyword(s):  
College Students ◽  
Chance Level ◽  
Control Group ◽  
Male College ◽  
Male College Students

20 male college students briefly viewed slides of 30 paintings. On second showing, 16 of the 30 slides were reversed in left-right orientation and Ss judged each painting as to whether a reversal had occurred. On third showing, Ss judged whether a painting was in the “correct” artist-intended orientation. Judgments of “correct” were chiefly based on whether the painting had minimal familiarity, i.e., had been unchanged in orientation on the first two showings. Neither this group nor a control group agreed with artist intent at more than a chance level.

scholarly journals Gender Differences in Knowledge and Attitude towards HPV and HPV Vaccine among College Students in Wenzhou, China

Vaccines ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 10
Author(s):  
Gang Chen ◽  
Biao Wu ◽  
Xuchao Dai ◽  
Mengqi Zhang ◽  
Yupeng Liu ◽  
...  
Keyword(s):  
College Students ◽  
Hpv Vaccine ◽  
Hpv Vaccination ◽  
Hpv Infection ◽  
Cross Sectional ◽  
Factors Affecting ◽  
Significant Difference ◽  
Male College ◽  
To Receive ◽  
Male College Students

Objective: This study aimed to determine human papillomavirus (HPV)-related awareness and willingness to receive HPV vaccination among college students, in Wenzhou, and its associated factors. Methods: A cross-sectional epidemiological study was conducted among college students in Wenzhou to investigate their knowledge, attitude, and factors affecting their willingness to receive HPV vaccination. Results: A total of 1035 questionnaires were collected, of which 1002 were valid (males: 374, females: 628). In total, 904 (90.2%) college students had heard of HPV, with a lower rate among males than females (85.3% vs. 93.2%, p < 0.05) and 693 (69.2%) had heard of the HPV vaccine, with a significantly lower rate among males than females (53.7% vs. 78.3%, p < 0.05). Overall awareness of HPV and HPV vaccine among males and females was moderate, with lower awareness among males. A total of 55.9% of males and 80.4% of females indicated that they would be willing to receive the HPV vaccine, a significant difference (p < 0.001). The price, safety of HPV vaccine, and lack of knowledge about HPV and HPV vaccine were the major barriers to HPV vaccination for college students. Compared to females, inadequate knowledge of HPV was the main barrier factor for HPV vaccination among male college students. Conclusions: The overall knowledge level of males is lower than that of females. For male college students, providing more knowledge about HPV infection is helpful to promote their willingness to vaccinate. It is necessary to promote HPV-related knowledge for male and female college students, respectively.

scholarly journals Development and Application of One Separation-Free Safety Tube on the Disposable Infusion Needle

2020 ◽  
Vol 2020 ◽  
pp. 1-4
Author(s):  
Weifen Lu ◽  
Qianli Pan ◽  
Yinxin Zhou ◽  
Wenyu Chen ◽  
Hongyan Zhang ◽  
...  
Keyword(s):  
Exposure Time ◽  
Statistical Significance ◽  
Intervention Group ◽  
Operation Time ◽  
Control Group ◽  
Needle Stick ◽  
Significant Difference ◽  
New Type ◽  
Needle Stick Injuries ◽  
The Difference

Objective. To develop a new type infusion set and apply it to the clinic, as well as explore its effectiveness in the prevention from needle stick injuries. Methods. A total of 200 inpatients who were in need of intravenous infusion with a disposable infusion needle were included and randomly divided into two groups: intervention group and control group. Disposable infusion needles with a separation-free safety tube were used in the intervention group, whereas conventional ones were used in the control group. Then, effects of the two types of infusion sets were observed and compared. Results. As for the operation time for infusion, it was (82.19±1.80) seconds in the intervention group and (83.02±1.83) seconds in the control group, with the difference statistically significant (P<0.05). Besides, the exposure time of the needles after infusion in the intervention group was (3.36±0.17) seconds while (18.85±1.18) seconds in the control group; the difference between which was statistically significant (P<0.05). In terms of the time for needle disposal, (18.60±0.84) seconds was required in the intervention group, while for the control group, it took (18.85±1.18) seconds, and the difference between two groups was of statistical significance as well (P<0.05). Nevertheless, there was no statistically significant difference in the accidental slip rate of the needles as that turned out 0% in both groups (P>0.05). It was worth noting that the block rate of the disposed needles in the intervention group was 100%. Conclusion. The separation-free safety tube on the disposable infusion needle could instantly block the sharp needle after infusion, which reduces the needle exposure time and lowers the risk of needle stick injuries. In the meantime, the safety tube is convenient to use, and its application can shorten the time for infusion and needle disposal, consequently improving the working efficiency of nurses. As the new type safety tube has above advantages and would not raise the risk of needle slippage, it is worthy of clinical promotion.

scholarly journals Brain-Derived Neurotrophic Factor and Its Serum Levels in Schizophrenic Patients

Folia Medica ◽  
2014 ◽  
Vol 56 (1) ◽  
pp. 20-23 ◽  
Author(s):  
Yvetta A. Koeva ◽  
Stefan T. Sivkov ◽  
Valentin H. Akabaliev ◽  
Roumiana Y. Ivanova ◽  
Tania I. Deneva ◽  
...  
Keyword(s):  
Neurotrophic Factor ◽  
Statistical Significance ◽  
Serum Levels ◽  
Brain Derived Neurotrophic Factor ◽  
Control Group ◽  
Significant Difference ◽  
Schizophrenic Patients ◽  
The Difference ◽  
Student’S T ◽  
Serum Bdnf

ABSTRACT INTRODUCTION: Neurotrophins have an important role in regulating the development and maintenance of the peripheral and central nervous systems’ function. Thus, the neurotrophin hypothesis of schizophrenia has postulated that the changes in the brain of schizophrenic patients are the result of disturbances of developing processes involving these molecules. AIM: We analyse in the present study the changes in the serum levels of brain-derived neurotrophic factor (BDNF) in schizophrenic patients as possible epiphenomena of underlying alterations of the neurotrophic factor in central nervous system, reflecting its role in the pathophysiology of schizophrenia. PATIENTS AND METHODS: Twenty-one schizophrenic patients satisfying the DSM-IV criteria for diagnosis of schizophrenia were enrolled in the study. The control group consisted of 28 age-matched mentally healthy subjects. Serum BDNF levels were determined in patients and normal controls using ELISA (Chemicon International, USA & Canada). The data were analyzed statistically with Student’s t- test in SPSS 9.0. RESULTS: The serum BDNF levels were lower in the schizophrenic patients than in the control subjects, reaching statistically significant difference (t = 2.72, p = 0.009). Female patients had lower serum BDNF levels than the male patients but the difference fell short of statistical significance (t = 0.1, p = 0.9). CONCLUSIONS: The BDNF reduction in serum indicates a potential deficit in neurotrophic factor release in patients with schizophrenia and support the concept that BDNF might be associated with schizophrenia

Encounter with Information in Selection Paradigm as a Function of Number of Relevant Dimensions

1971 ◽  
Vol 33 (2) ◽  
pp. 631-638 ◽  
Author(s):  
Louis S. Dickstein
Keyword(s):  
College Students ◽  
Concept Attainment ◽  
Amount Of Information ◽  
Traditional Procedure ◽  
Significant Difference ◽  
Male College ◽  
Dimension 2 ◽  
Conjunctive Concepts ◽  
Male College Students

Recent studies of the effect of the number of relevant dimensions upon concept attainment in the selection paradigm have not considered the amount of information encountered by Ss in their selections. The present study introduces several modifications in traditional procedure to allow for the measurement of this variable. Male college students attained unidimensional and conjunctive concepts with a 6-dimension 2-value array. Ss encountered information more rapidly the fewer the number of dimensions relevant to the concept. However, no significant difference was obtained with regard to the attainment of the concept itself.

scholarly journals Comparison of dual-dimensional and rectangular wires in terms of space closure and anchorage loss during retraction with miniimplants: A prospective clinical study

2020 ◽  
Vol 14 (1) ◽  
pp. 54-60
Author(s):  
Sangeetha Morekonda Gnaneswar ◽  
Premkumar Sridhar
Keyword(s):  
Statistical Significance ◽  
Torque Control ◽  
Control Group ◽  
Prospective Clinical Study ◽  
Mini Implants ◽  
Space Closure ◽  
Significant Difference ◽  
The Difference ◽  
Anchorage Loss ◽  
Sliding Mechanics

Background . In sliding mechanics, archwires should slide easily during the retraction of anteriors. Round wires slide well, but the torque control is a significant problem. Rectangular wires produce effective torque expression but pose a challenge to free sliding due to factors like friction and force used to overcome friction, etc. To utilize the properties of both wires, the wire should be bi-dimensional. Dual-dimensional wire is one such wire with different dimensions in the anterior and posterior sections. This study aimed to compare the amount of space closure and anchorage loss of molars between the rectangular and dual-dimensional wire groups during retraction with mini-implants. Methods. Forty patients were randomly allocated to two groups (n=20). Patients with rectangular wires formed the control group, and those with dual-dimensional wires formed the experimental group. Mini-implants and NiTi coil springs were used for retraction. Model and cephalometric analyses were carried out to calculate the amount of space closure and anchor loss, before and four months after the study. Statistical significance was set at P<0.05. Results. The average amount of space closure was higher with DDW (3.98 mm) than rectangular wire (3.22 mm). The difference was statistically significant. No significant difference was found with anchorage loss. Conclusion. DDW can be used as an alternative to rectangular wires during retraction with mini-implants; however, it cannot replace the rectangular wires completely. Anchorage control was effective with both wires.

scholarly journals Ratio of maximum hamstring torque to maximum quadriceps torque in professional basketball and soccer players

2021 ◽  
Vol 7 (4) ◽  
pp. 8-18
Author(s):  
A. Kukrić ◽  
M. Joksimović ◽  
B. Petrović ◽  
F. Latino ◽  
R. Pavlović ◽  
...  
Keyword(s):  
Knee Joint ◽  
Peak Torque ◽  
Soccer Players ◽  
Football Players ◽  
Basketball Players ◽  
Professional Basketball ◽  
Professional Soccer ◽  
Lower Extremity Muscle ◽  
Significant Difference ◽  
The Difference

Purpose: The aim of the study was to determine the differences between football players and basketball players in the mean absolute values ​​of maximum torque flexors and extensors, ratio of maximum hamstring torque to maximum quadriceps torque dominant (DOM) non-dominant (ND) leg and differences in bilateral imbalance of flexor muscles and knee extensors. Material and methods: The research included a sample of 39 professional athletes. The first subsample included 19 professional basketball players while the second subsample included 20 professional soccer players. Results: Based on the results of the torques of the extensors in the knee joint of the DOM and ND legs, it was established that there is no statistically significant difference between basketball players and football players. However, a statistically significant difference was found in the torque flexors of the knee joint DOM (p≤0.01) and ND (p≤0.00) of the leg between basketball players and football players. On the other hand, the results of the research indicate that the difference between basketball players and football players in the ratio of Hamstrings peak torque to Quadriceps peak torque was recorded only in the ND leg (p≤0.02), while the difference in the DOM leg is not statistically significant. The results of our study indicate that basketball players have a higher percentage of imbalances compared to football players, especially in m. hamstrings. Conclusion: This study provides normative data on populations specific to soccer and basketball, but does not provide evidence of the ability of the isokinetic assessment of lower extremity muscle strength to predict injuries to football players and basketball players.

scholarly journals An Experimental and Algorithm Research on the Influence of OTO Teaching Mode on College Students' PE Learning Interest Based on Cloud Computing

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Shijun Wu ◽  
Jianghong Dai ◽  
Jiujiu Yang
Keyword(s):  
College Students ◽  
Physical Education ◽  
Extracurricular Activities ◽  
Statistical Significance ◽  
Colleges And Universities ◽  
Skill Learning ◽  
Control Group ◽  
Teaching Mode ◽  
Significant Difference ◽  
Learning Interest

Algorithm is a step of problem-solving, and algorithm can be defined as any special method for solving a certain type of problem. In computer science, algorithms are described in computer algorithm language and represent accurate and effective methods for solving a class of problems with computers. In order to verify the role of the OTO teaching mode from the perspective of cultivating learning interest and to provide a practical basis for the reform of physical education in colleges and universities, 107 second-year physical education majors in a common university were selected as experimental subjects and divided into an experimental group and a control group, and the two groups were intervened through a 16-week experiment. Multivariate covariance was used to analyze the influence of two teaching modes on college students' interest in sports learning. After excluding factors such as student gender, physical exercise behavior stage, football learning experience, and physical health, the groups have statistical significance in the four dimensions of positivity, skill learning, extracurricular activities, and negativity in sports learning interest. However, there is no significant difference in the influence of sports attention on sports learning interest. The research proves that the application of OTO teaching mode is conducive to promoting students' learning positivity, technical learning, and extracurricular activities and alleviating students' negative learning emotions. The degree of attention to sports in the interest of sports learning is not very significant. It is suggested that colleges and universities adopt the OTO teaching mode in the teaching of general football courses.

Effect and mechanism of ikkβ on proliferation, apoptosis, and metastasis of breast cancer cells with different expression levels of leptin and its receptors.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e15592-e15592
Author(s):  
Yan Kong ◽  
Qian Dong ◽  
Cuizhi Geng ◽  
Da Jiang
Keyword(s):  
Breast Cancer ◽  
Cancer Cells ◽  
Signaling Pathway ◽  
Breast Cancer Cells ◽  
Statistical Significance ◽  
Control Group ◽  
Expression Levels ◽  
Significant Difference ◽  
The Difference ◽  
Mcf 7

e15592 Background: To investigate the effect and mechanism of IKKβ on proliferation, apoptosis, invasion and metastasis of breast cancer cells with different expression levels of leptin and ObR. Methods: IKKβ in breast cancer cells was knocked down via virus transfection technology. MTT, flow cytometry, cell scratch test and clone formation test were used to observe the effect of IKKβ on proliferation, apoptosis and metastasis of breast cancer cells with different expression levels of leptin and ObR. RT-PCR was used to detect the downstream genes expressions in IKKβ signaling pathway. Results: The expression levels of leptin and ObR in MDA-MB-231 cells were higher than those in MCF-7 cells. Lentivirus can successfully infect breast cancer cells in vitro and knock down the expression of IKKβ. Knocking down IKKβ reduced the viability of MDA-MB-231 cells, but had little effect on MCF-7, and had an effect on the cell cycle of both cells. After knocking down IKKβ, the apoptotic rate of MDA-MB-231 cells increased. There was no significant difference in the apoptotic rate of MCF-7 cells. The number of clones of MCF-7 and MDA-MB-231 cells decreased, and the difference was significant. The effect on MDA-MB-231 cells was more significant. The scratch mobility of MDA-MB-231 cells decreased significantly, with significant difference.After knocking down IKKβ, the expressions of leptin and ObR, IKBKG, P65 and HIF in MCF-7 cells were significantly decreased, and there was statistical significance. However, the above indicators were significantly increased in MDA-MB-231 cells. The expression level of IKBKG was increased significantly, whereas that of HIF did not differ significantly, as compared with that of control group. Conclusions: The proliferation, metastasis and apoptosis of MDA-MB-231 cells were inhibited after blocking the IKKβ pathway, while the proliferation of MCF-7 cells was inhibited, and the apoptosis did not change significantly. The difference between the two cells may be related to the different expression levels of leptin and ObR.After blocking the IKKβ signaling pathway, the expressions of genes related to the IKKβ signaling pathway in MDA-MB-231 cells were increased, whereas those in MCF-7 cells were decreased, which might be related to the different expression levels of leptin and ObR.After knocking down IKKβ, the expressions of HIF gene in MCF-7 cells were decreased, whereas those in MDA-MB-231 cell lines were not affected. It needs to be verified whether this difference is related to leptin and ObR.

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