The video feedback viewing in novice weightlifters: Total control strategy improves snatch technique during learning

This study aimed at comparing the efficiency of two viewing control strategies, total control versus partial control, in correcting the snatch technique in school-aged boys (10–12 years old). Thirty-nine participants, with 2 months of weightlifting training experience, were divided into three groups: total control, partial control, or a control group. The Kinovea version 0.8.15 software was used to measure the kinematic parameters of the snatch technique before (T0) and after six learning sessions (T1). Following the learning sessions, total control group showed greater improvements for all kinematic parameters compared with the partial control and control group (e.g., the horizontal displacement (i) in the first pull (Δ Dx2: 18.17 ± 26.75%, p < 0.01, d = 0.83), (ii) between the first and the second pulls (Δ DxV: 25.97 ± 18.02%, p < 0.001, d = 1.52) and from the most forward position to the catch position (Δ DxL: 19.98 ± 21.60%, p < 0.01, d = 1.36), while the partial group improved only on the Dx2 (Δ Dx2 = 21.53 ± 20.40%, p < 0.01, d = 0.86). The present results indicate that the intensive use of the interactive features (e.g. pause, play, forward, and backward) and the asked questions during the first learning phase were essential for the improvement of the snatch technique. These findings have potential practical implications for coaching and physical education teaching.

Visual Attention Patterns in Adults According to the Use of Things in Aided AAC VSDs: An Eye-tracking Study

Objectives: This study aims to investigate patterns of visual attention on a target object in VSDs (Visual Scene Displays) when they are designed with/without an action of usage of the object. We used eye-tracking technology to evaluate how the action of usage of an object in still photographs influenced the visual attention of adults without disabilities. We tried to examine visual attention on the contents of visual scene displays (VSDs).Methods: 25 college students participated in the study. Eye-tracking technology recorded point-of-gaze while participants viewed 20 photographs. Data from eye-tracking provided information on where participants were visually fixated and paid more attention on the presented VSDs including a target object.Results: Both total fixation duration and average fixation count were statistically significant. Participants visually fixated on the target object longer and more often when the object was being used in the presented VSDs. For AOI (Area Of Interest) time of the first fixation, after analyzing only a partial group that had the data match due to the difference in gaze pattern per subject, the average AOI time of the first fixation was shown to be faster when using an object in 6 out of 10 objects.Conclusion: This study supports the inclusion of an action of an object usage in VSDs suggesting that the act of object usage can partially influence the visual attention pattern of a user.

PTSD and Suicidal Behaviors Amongst L'Aquila 2009 Earthquake Young Survivors

Background: Post-traumatic stress disorder (PTSD) is one of the most frequent and severe psychiatric consequences of natural disasters, frequently associated with suicidality. The aim of this study was at examining the possible relationships between suicidal behaviors and full-blown or partial PTSD, in a sample of young earthquake survivors. The second aim was at investigating the specific role of PTSD symptoms on suicidality.Methods: A total of 475 young adults who survived the L'Aquila 2009 earthquake, one of the most severe Italian disasters of the last decades, were recruited and assessed after 21 months from the catastrophe. Participants were evaluated by two questionnaires assessing subthreshold psychopathology, the Trauma and Loss Spectrum Self-Report (TALS-SR) to investigate both full and partial PTSD, and two specific Mood Spectrum Self-Report (MOODS-SR) sub-domains exploring suicidality, namely suicidal ideation and suicide attempts.Results: The ensuing findings showed that suicidal ideation and suicide attempts were present, respectively, in 40 (8.4%) and 11 (2.3%) survivors. Rates of suicidal ideation were significantly more elevated in full-blown PTSD subjects (group 1), as compared with those suffering from partial (group 2) or no PTSD (group 3). Interestingly, group 2 subjects showed significantly more suicidal ideation than healthy individuals, and less than those of group 1, while the frequency of suicide attempts was similar across the three groups. Suicidal ideation was associated with higher scores in the following TALS-SR domains: grief-reactions, re-experiencing, avoidance and numbing, maladaptive coping, and personal characteristics/risk factor.Conclusions: The results of the present study support and extend previous findings on the role of PTSD symptoms in suicidality after a severe earthquake. However, as compared with available literature, they also highlight the significant impact of sub-threshold PTSD manifestations in increasing the suicide risk in survivors of a mass disaster.

Clinical Outcomes after Arthroscopic Repair of Gluteus Medius with a Two-year Minimum Follow-up

Objectives: Hip arthroscopy has replaced the need for many open surgeries including repairs of gluteus medius tendon tear. There are only a few studies that have analyzed patient reported outcomes at 2 years for arthroscopic gluteus medius tendon repair. The purpose of the current study is to evaluate clinical outcomes in patients who underwent arthroscopic gluteus medius repair with at least 2 year follow-up. Methods: This was a single-center, retrospective IRB approved study. Between August 2010 and August 2016, patients who underwent hip arthroscopy with gluteus medius repair by a single surgeon were evaluated at baseline and two year follow-up via Modified Harris Hip Score (MHHS) and Non-arthritic Hip Score (NAHS). Inclusion criteria included all patients who received arthroscopic repair of the full or partial thickness tears of the gluteus medius tendon and had a minimum follow up of at least two years. Paired t-test was used for statistical comparison between baseline and follow-up for each respective outcome score and group. Results: 20 hips were evaluated, met the inclusion criteria and separated based on partial (group one) or full thickness tear (group two). The study population comprised of 15 (79%) females and 4 (21%) males. Group one presented with a mean age of 54.8 ± 11.3 years and an average BMI of 25.1 ± 4.0. Group two presented with a mean age of 46 ± 11.4 and an average BMI of 25.5 ± 4.0. Patients in group one reported an average preoperative MHHS and NAHS of 33.6 ± 11.3 and 40.4 ± 14.9, respectively. At 2 year follow-up, an average MHHS and NAHS of 72.9 ± 22.9 and 77.2 ± 19.7 was reported, respectively. Patients in group two reported an average preoperative MHHS and NAHS of 43.8 ± 14.7 and 46.4 ± 8.3, respectively. At 2 year follow-up, an average MHHS and NAHS of 80.1 ± 8.5 and 79.5 ± 10.1, respectively. There was significant clinical improvement at the 2 year follow-up, relating to both outcome measures in each subject group (p<0.0004). Conclusions: After a minimum of two years for follow-up, arthroscopic repair of gluteus medius tears proves to be an effective approach and treatment. In the future, studies looking at longer follow-up time would help determine if the current approach maintains long-term clinical improvement.

Partial vs. radical nephrectomy and the risk of all-cause mortality, cardiovascular, and nephrological outcomes

Introduction: The study’s objective was to examine the effects of renal preservation surgery on long-term mortality, cardiovascular outcomes, and renal-related outcomes. Methods: We performed a retrospective cohort study of all partial (n=575) and radical nephrectomies (n=882) for tumors ≤7 cm in diameter between 2002 and 2010 across three academic centers in Ontario, Canada. We linked records from provincial databases to assess patient characteristics and outcomes (median seven years’ followup using retrospective data). A weighted propensity score was used to reduce confounding. The primary outcome was all-cause mortality. Secondary outcomes included hospitalization with major cardiovascular events, non-cancer related mortality, kidney cancer-related mortality, and dialysis. Results: Mean one-year postoperative estimated glomerular filtration rate (eGFR) was 71 mL/min/1.73 m2 in the partial group and 52 mL/min/1.73 m2 in the radical group. Partial nephrectomy was associated with a lower risk of all-cause mortality in the first five years after surgery (hazard ratio [HR] 0.42; 95% confidence interval [CI] 0.27–0.66), which did not extend beyond five years (HR 1.01; 95% CI 0.68–1.49). Kidney cancer-related mortality was lower in the partial compared to the radical group for the first four years after surgery (HR 0.16; 95% CI 0.04–0.72). There were no significant differences between the groups for cardiovascular outcomes or non-cancer related deaths. Conclusions: Overall survival and cancer-specific survival was reduced in radical nephrectomy patients. However, despite reduced renal function in the radical nephrectomy group, non-cancer -related death, cardiovascular events, and dialysis were not significantly different between groups. Long-term benefits of partial nephrectomy may be less than previously believed.

A Generalization of Groups

For a nonempty set G, the authors define an operation * reckoned with closeness property (i.e.,* is an operation which is not a binary operation). Then they define the partial group as a generalisation of a group. A partial group G which is a non empty set satisfies following conditions hold for all a,b and c∈d:(PG1) If ab,(ab)c, bc and a (bc) is defined, then,(ab) c=a (bc)(PG2) . For every,a∈G there exists an e∈G such that ae and ea are defined and, ae=ea=a (PG3) . For every,a∈G there exists an a∈G such that aa and aa are defined and aa=aa=e. The * operation effects and changes the properties of group axioms. So that lots of group theoretic theorems and conclusions do not work in partial groups. Thus, this description gives us some fundemental and important properties and analogous to group theory. Also the authors have some differences from group theory.

Splenic flexure mobilization is an essential role in laparoscopic low anterior resection!

Background: Routine mobilization of splenic flexure whether partial or complete became an essential step in laparoscopic low anterior resections in order to perform an oncologic re­section and to achieve a safe, tension-free anastomosis.Methods: 60 patients with rectal cancer were operated by laparoscopic low anterior resection with high ligation of inferior mesenteric artery in general surgery department, Menoufia university hospital between February 2016 and January 2019. All patients were divided randomly into 2 equal groups based on the techniques used in splenic flexure mobilization whether partial (group A) or complete (group B).Results: The majority of our patients were male 56.6% and 60% in both groups respectively with mean age (54.6±8.8) years in group A and mean age (58.5±9.2) years in group B. The operative time was highly significant lower in group A (269±17.6 minutes) than group B (304±22.4 minutes) while the conversion rate was significantly higher in group B (26.6%) than group A (6.6%). Regarding the postoperative data there was only significantly higher leak from the anastomosis in group A (20%) than group B (3.3%).Conclusions: Complete splenic flexure offer better oncological outcome and low incidence of anastomotic leak but with higher conversion rate, prolonged operative time, more blood loss and more 30 day mortality rate. So it needs more time to gain more experience to overcome these disadvantages.