bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Variations in Resistance Training Frequency on Strength Development in Well-Trained Populations and Implications for In-Season Athlete Training: A Systematic Review and Meta-analysis
Authors: Cuthbert Matthew , Haff G. Gregory , Arent Shawn M. , Ripley Nicholas , McMahon John J. , Evans Martin , Comfort Paul 
Published: April 2021

Abstract
Background
In-season competition and tournaments for team sports can be both long and congested, with some sports competing up to three times per week. During these periods of time, athletes need to prepare technically, tactically and physically for the next fixture and the short duration between fixtures means that, in some cases, physical preparation ceases, or training focus moves to recovery as opposed to progressing adaptations.

Objective
The aim of this review was to investigate the effect of training frequency on muscular strength to determine if a potential method to accommodate in-season resistance training, during busy training schedules, could be achieved by utilizing shorter more frequent training sessions across a training week.

Methods
A literature search was conducted using the SPORTDiscus, Ovid, PubMed and Scopus databases. 2134 studies were identified prior to application of the following inclusion criteria: (1) maximal strength was assessed, (2) a minimum of two different training frequency groups were included, (3) participants were well trained, and finally (4) compound exercises were included within the training programmes. A Cochrane risk of bias assessment was applied to studies that performed randomized controlled trials and consistency of studies was analysed using I2 as a test of heterogeneity. Secondary analysis of studies included Hedges’ g effect sizes (g) and between-study differences were estimated using a random-effects model.

Results
Inconsistency of effects between pre- and post-intervention was low within-group (I2 = 0%), and moderate between-group (I2 ≤ 73.95%). Risk of bias was also low based upon the Cochrane risk of bias assessment. Significant increases were observed overall for both upper (p ≤ 0.022) and lower (p ≤ 0.008) body strength, pre- to post-intervention, when all frequencies were assessed. A small effect was observed between training frequencies for upper (g ≤ 0.58) and lower body (g ≤ 0.45).

Conclusion
Over a 6–12-week period, there are no clear differences in maximal strength development between training frequencies, in well-trained populations. Such observations may permit the potential for training to be manipulated around competition schedules and volume to be distributed across shorter, but more frequent training sessions within a micro-cycle rather than being condensed into 1–2 sessions per week, in effect, allowing for a micro-dosing of the strength stimuli.
A Local Random Glandular Flap for oncoplastic breast conserving surgery
Authors: Alipour Sadaf , Foroutan Zohreh 
Published: April 2021

ABSTRACT

Background:
Oncoplastic breast cancer surgeries involve a combination of oncologic surgery and esthetic techniques, to excise breast malignant tumors with appropriate clear margins, and maintain or create a pleasant breast contour and shape. Various techniques have been presented up to now, and each one has its advantages and disadvantages. We present our Local Random Glandular Flap, which is practical for many tumor locations and sizes; and yields acceptable, almost symmetrical outcomes.

Methods:
We collected data of patients who had been operated on between 2014 and 2019 using this technique. Information gathered consisted of tumor characteristics, flap characteristics, and results of surgery regarding oncologic and cosmetic outcomes in a five-point Likert scale.

Results:
Data of 25 patients were collected. The mean size of tumors was around 25 mm. There was no involved margin except for one case that had diffuse malignant cells in many foci around the margins in her permanent histologic reviews and underwent mastectomy afterwards. Cosmetic outcomes as rated by the patients were very good and good in about 79% and 21% of the patients, respectively; and very good, good, medium, bad and very bad in around 71%, 16.5%, 8%, 0% and 4%, respectively as rated by the surgeon.

Conclusions:
The LRGF technique allows a wide resection of malignant breast tumors with excellent oncologic results, satisfactory cosmetic outcomes and nearly no need for contralateral symmetrization procedures. This procedure has interesting novel features: the scar is minimal, no skin is removed, the shape of the breast is largely conserved so that symmetrization of the contralateral breast is not necessary, and areolar re-centralization is not needed.
Bhakti versus rīti? The Sants’ perspective
Authors: Rajpurohit Dalpat S. 
Published: April 2021

AbstractScholars have rightly questioned the periodization of early modern Hindi literature (fourteenth to mid-nineteenth century) into two major thematic and temporal categories, often described as binaries: an early bhaktikāl (era of devotion), and the later rītikāl (era of mannerism). It is now common to understand bhakti and rīti as complementary modes of poetic expression rather than oppositional styles that poets had to identify with entirely. This paper uses the perspective of poet-saints (sants) to argue that, although the sants share many features with the rīti poets in terms of genres and register, they diverge fundamentally from them on the topic of the proper motives of composing verse. The criticism that the sants register with selected rīti themes – conflicts which would later figure in the writings of Hindi literary historians in the nationalist era – can be seen as anticipating the modern bhakti versus rīti distinction.
Cultural generativity in perspective: motivations of older Jewish volunteers
Authors: O'Dea Eireann , Wister Andrew , Canham Sarah L. 
Published: April 2021

AbstractThe physical, mental and social benefits for older adults who volunteer are well-documented. Absent from this area of research is an understanding of volunteer motivations among ethnoculturally diverse older adults. This paper addresses this research gap by examining motivations to volunteer related to cultural generativity among Jewish older adults, a group that remains underexplored in research. Cultural generativity is defined as an impulse to pass down one's culture to the next generation, and thus to outlive the self. The Jewish community is notable for possessing high levels of social capital, indicated by close community ties and the large number of faith and culturally based organisations, and therefore makes them an important ethnocultural group to study. Semi-structured qualitative interviews were conducted with 20 adult volunteers age 65 and over. The guiding research questions for this study are: What are the motivations to volunteer among older Jewish adults? and Do these motivations align with the concept of generativity applied to Jewish culture? Data analysis identified three themes related to cultural generativity: volunteering to preserve and pass down Jewish traditions and teachings; a Jewish ethic of giving back perceived as a duty; and experiences of anti-Semitism and discrimination motivating Jewish participants to volunteer. Findings suggest the ways in which cultural generativity may be expressed through volunteerism.
A cross-cultural investigation of the conceptualisation of frailty in northern Tanzania
Authors: Lewis Emma G. , Rogathi Jane , Kissima John , Breckons Matthew , Lee Richard , Urasa Sarah 
Published: April 2021

AbstractFrailty prevalence is higher in low- and middle-income countries (LMICs) compared with high-income countries when measured by biomedical frailty models, the most widely used being the frailty phenotype. Frailty in older people is becoming of global public health interest as a means of promoting health in old age in LMICs. As yet, little work has been done to establish to what extent the concept of frailty, as conceived according to ‘western’ biomedicine, has cross-cultural resonance for a low-income rural African setting. This study aimed to investigate the meaning of frailty contextually, using the biomedical concept of the frailty phenotype as a framework. Qualitative interviews were conducted with a purposive sample of older adults, their care-givers and community representatives in rural northern Tanzania. Thirty interview transcripts were transcribed, translated from Kiswahili to English and thematically analysed. Results reveal that despite superficial similarities in the understanding of frailty, to a great extent the physical changes highlighted by the frailty phenotype were naturalised, except when these were felt to be due to a scarcity of resources. Frailty was conceptualised as less of a physical problem of the individual, but rather, as a social problem of the community, suggesting that the frailty construct may be usefully applied cross-culturally when taking a social equity focus to the health of older people in LMICs.
Folliculogenesis-related genes are differently expressed in secondary and tertiary ovarian follicles
Authors: Moura L.B.S. , Magalhães-Padilha D.M. , Morais A.N.P. , Aguiar F.L.N. , Geisler–Lee J. , Wischral A. , Gastal M.O. , Fonseca G.R. , Geisler M. , Figueiredo J.R. 
Published: April 2021

SummaryThe relative mRNA abundance of 10 genes associated with folliculogenesis was compared between late preantral (secondary) and early antral (tertiary) ovarian follicles in goats. In total, 100 follicles in each category were mechanically isolated. The relative transcript abundance of the mRNAs were determined by qPCR. Data were analyzed using unpaired Student’s t-test. Of the 10 tested genes, ABLIM mRNA was not detected in either follicle category, six genes (SLIT3, TYMS, GTPBP1, AKR1C4, PIK3R6, and MAOB) were upregulated in secondary follicles compared with tertiary follicles, and three genes (ARHGEF12, CLEC6A, and CYTL1) showed similar mRNA abundances in both secondary and tertiary follicles. In conclusion, SLIT3, GTPBP1, AKR1C4, and PIK3R6 mRNA abundance was upregulated in secondary follicles (preantral phase) compared with in tertiary follicles (antral phase) in goats.
Bacterial influence on the formation of hematite: implications for Martian dormant life
Authors: Wickramarathna Sudeera , Chandrajith Rohana , Senaratne Atula , Paul Varun , Dash Padmanava , Wickramasinghe Saumya , Biggs Patrick J. 
Published: April 2021

AbstractPrevious exploration missions have revealed Mars as a potential candidate for the existence of extraterrestrial life. If life could have existed beneath the Martian subsurface, biosignatures would have been preserved in iron-rich minerals. Prior investigations of terrestrial biosignatures and metabolic processes of geological analogues would be beneficial for identifying past metabolic processes on Mars, particularly morphological and chemical signatures indicative of past life, where biological components could potentially be denatured following continued exposure to extreme conditions. The objective of the research was to find potential implications for Martian subsurface life by characterizing morphological, mineralogical and microbial signatures of hematite deposits, both hematite rock and related soil samples, collected from Highland Complex of Sri Lanka. Rock samples examined through scanning electron microscopy-energy dispersive X-ray (SEM-EDX) spectroscopy. Analysis showed globular and spherical growth layers nucleated by bacteria. EDX results showed a higher iron to oxygen ratio in nuclei colonies compared to growth layers, which indicated a compositional variation due to microbial interaction. X-ray diffraction analysis of the hematite samples revealed variations in chemical composition along the vertical soil profile, with the top surface soil layer being particularly enriched with Fe2O3, suggesting internal dissolution of hematite through weathering. Furthermore, inductively coupled plasma-mass spectrometry analyses carried out on both rock and soil samples showed a possible indication of microbially induced mineral-weathering, particularly release of trapped trace metals in the parent rock. Microbial diversity analysis using 16S rRNA gene sequencing revealed that the rock sample was dominated byActinobacteriaandProteobacteria, specifically, members of iron-metabolizing bacterial genera, includingMycobacterium,Arthrobacter,Amycolatopsis,NocardiaandPedomicrobium. These results suggest that morphological and biogeochemical clues derived from studying the role of bacterial activity in hematite weathering and precipitation processes can be implemented as potential comparative tools to interpret similar processes that could have occurred on early Mars.
Motivational Climate Measures in Sport: A Systematic Review
Authors: Lacerda Adriana , Filgueiras Alberto , Campos Marianna , Keegan Richard , Landeira-Fernández Jesús 
Published: April 2021

AbstractMotivational climate can be defined as the environmental status of sport that influences motivation levels. The present study aimed to systematically identify the most widely used measures examining motivational climate. The databases for searching werePsycNET, PubMedandScienceDirect.The search returned a total of 378 studies of which 8 met the inclusion criteria for analysis. The results show that the most used instruments for evaluation of motivational climate have good psychometric characteristics of reliability, validity and factorial structure. On the other hand, there was a lack of studies that analyzed invariance of measures, which may be a critical consideration. Finally, the review points out the need for development of new theoretical perspectives, potential new instruments that extend beyond the socio-cognitive approach and instruments that allow the measurement of other environmental, personal and structural variables other than parents, coaches and athletes.
Psychometric Validation of a Parent-Reported Measure of Childhood	Alexithymia
Authors: Brown Ruth Harriet , Murray Aja , Stewart Mary E. , Auyeung Bonnie 
Published: April 2021

Abstract. Alexithymia can be defined as difficulties in describing one’s emotions and is of interest within clinical and developmental psychology as a potential mediating and exacerbating factor across multiple forms of psychopathology. Measuring alexithymia via self-reports can be challenging, as those with heightened alexithymia may have difficulties in recognizing their alexithymia traits due to impaired metacognitive skills. Thus, there would be considerable benefits to the availability of a psychometrically validated parent-reported alexithymia measure that may circumvent the issue of self-reports. We, therefore, examined the psychometric properties of a new parent-reported alexithymia measure, the Alexithymia Questionnaire for Children – Parent (AQC-P) in a community sample of 257 child-parent dyads. Furthermore, we examined the level of agreement between the parent-rated AQC-P and its self-rated counterpart, the Alexithymia Questionnaire for Children (AQC). Confirmatory factor analysis found that an oblique three-factor structure provided the best model for both AQC-P and AQC, with this structure showing measurement invariance across child gender. All subscales had omega internal consistency values > .70, supporting their reliability. Cross-informant consistency was supported by significant correlations between AQC and AQC-P scores. Results support the use of the AQC-P as a measure of parent-reported alexithymia in children.
Serpentinization, Carbonation, and Metasomatism of Ultramafic Sequences in the Northern Apennine Ophiolite (NW Italy)
Authors: Schwarzenbach Esther M. , Vogel Monica , Früh‐Green Gretchen L. , Boschi Chiara 
Published: April 2021

AbstractFluid‐rock interaction in ultramafic rocks considerably affects the chemical and isotopic composition of the oceanic lithosphere. We present a geochemical and petrological study of serpentinites and ophicalcites of the Northern Apennine ophiolite, Italy. This ophiolite sequence represents fragments of Jurassic oceanic lithosphere that have been denuded by low angle detachment faults, exposing peridotites on the ocean floor and triggering hydrothermal alteration. Seawater circulation is documented by (Jurassic) seawater‐like 87Sr/86Sr values and δ13C values of 1.1–3.0‰ in carbonate veins of the ophicalcites. Bulk rock ophicalcites have low 87Sr/86Sr values of 0.70489–0.70599, elevated SiO2 contents, and talc druses filling calcite veins that record Si‐metasomatism. In contrast, underlying serpentinites have 87Sr/86Sr values above Jurassic seawater values. Bulk rock δD and δ18O values of ophicalcites and serpentinites suggest interaction with an evolved seawater‐derived and/or magmatic fluid. These chemical signatures result from a complex history of serpentinization, carbonation, and metasomatism. Multiphase water‐rock interaction includes infiltration of basement‐derived fluids during initial mantle upwelling within an opening ocean basin, followed by localized high‐temperature fluid infiltration, extensive seawater circulation resulting in carbonation, and oxidation near the seawater‐exposed surface, and finally, fluid‐rock interaction with overlying mafic lithologies leading to Si‐metasomatism.The studied sequence represents an excellent example of the evolution from serpentinite to ophicalcite during continuous uplift and exposure of ultramafic rocks on the seafloor and documents the complex hydrothermal evolution of ultramafic rocks associated with this process. The extensive chemical transformation of mantle peridotites likely has an impact on geochemical cycles and subduction zone processes.
Black Carbon Emission Reduction Due to COVID‐19 Lockdown in China
Authors: Jia Mengwei , Evangeliou Nikolaos , Eckhardt Sabine , Huang Xin , Gao Jian , Ding Aijun , Stohl Andreas 
Published: April 2021

AbstractDuring the Lunar New Year Holiday of 2020, China implemented an unprecedented lockdown to fight the COVID‐19 outbreak, which strongly affected the anthropogenic emissions. We utilized elemental carbon observations (equivalent to black carbon, BC) from 42 sites and performed inverse modeling to determine the impact of the lockdown on the weekly BC emissions and quantify the effect of the stagnant conditions on BC observations in densely populated eastern and northern China. BC emissions declined 70% (eastern China) and 48% (northern China) compared to the first half of January. In northern China, under the stagnant conditions of the first week of the lockdown, the observed BC concentrations rose unexpectedly (29%) even though the BC emissions fell. The emissions declined substantially thereafter until a week after the lockdown ended. On the contrary, in eastern China, BC emissions dropped sharply in the first week and recovered synchronously with the end of the lockdown.
Leukemia inhibitory factor regulates Schwann cell proliferation and migration and affects peripheral nerve regeneration
Authors: Chen Qianqian , Liu Qianyan , Zhang Yunsong , Li Shiying , Yi Sheng 
Published: April 2021

AbstractLeukemia inhibitory factor (LIF) is a pleiotropic cytokine that stimulates neuronal development and survival. Our previous study has demonstrated that LIF mRNA is dysregulated in the peripheral nerve segments after nerve injury. Here, we show that LIF protein is abundantly expressed in Schwann cells after rat sciatic nerve injury. Functionally, suppressed or elevated LIF increases or decreases the proliferation rate and migration ability of Schwann cells, respectively. Morphological observations demonstrate that in vivo application of siRNA against LIF after peripheral nerve injury promotes Schwann cell migration and proliferation, axon elongation, and myelin formation. Electrophysiological and behavior assessments disclose that knockdown of LIF benefits the function recovery of injured peripheral nerves. Differentially expressed LIF affects the metabolism of Schwann cells and negatively regulates ERFE (Erythroferrone). Collectively, our observations reveal the essential roles for LIF in regulating the proliferation and migration of Schwann cells and the regeneration of injured peripheral nerves, discover ERFE as a downstream effector of LIF, and extend our understanding of the molecular mechanisms underlying peripheral nerve regeneration.
Noiseless photonic non-reciprocity via optically-induced magnetization
Authors: Hu Xin-Xin , Wang Zhu-Bo , Zhang Pengfei , Chen Guang-Jie , Zhang Yan-Lei , Li Gang , Zou Xu-Bo , Zhang Tiancai , Tang Hong X. , Dong Chun-Hua , Guo Guang-Can , Zou Chang-Ling 
Published: April 2021

AbstractThe realization of optical non-reciprocity is crucial for many applications, and also of fundamental importance for manipulating and protecting the photons with desired time-reversal symmetry. Recently, various new mechanisms of magnetic-free non-reciprocity have been proposed and implemented, avoiding the limitation of the strong magnetic field imposed by the Faraday effect. However, due to the difficulties in separating the signal photons from the drive laser and the noise photons induced by the drive laser, these devices exhibit limited isolation performances and their quantum noise properties are rarely studied. Here, we demonstrate an approach of magnetic-free non-reciprocity by optically-induced magnetization in an atom ensemble. Excellent isolation (highest isolation ratio is $$51.{5}_{-2.5}^{+6.5}\ {\rm{dB}}$$
51
.

5

−
2.5

+
6.5

dB
) is observed over a power dynamic range of 7 orders of magnitude, with the noiseless property verified by quantum statistics measurements. The approach is applicable to other atoms and atom-like emitters, paving the way for future studies of integrated photonic non-reciprocal devices.
Persistent directional growth capability in Arabidopsis thaliana pollen tubes after nuclear elimination from the apex
Authors: Motomura Kazuki , Takeuchi Hidenori , Notaguchi Michitaka , Tsuchi Haruna , Takeda Atsushi , Kinoshita Tetsu , Higashiyama Tetsuya , Maruyama Daisuke 
Published: April 2021

AbstractDuring the double fertilization process, pollen tubes deliver two sperm cells to an ovule containing the female gametes. In the pollen tube, the vegetative nucleus and sperm cells move together to the apical region where the vegetative nucleus is thought to play a crucial role in controlling the direction and growth of the pollen tube. Here, we report the generation of pollen tubes in Arabidopsis thaliana whose vegetative nucleus and sperm cells are isolated and sealed by callose plugs in the basal region due to apical transport defects induced by mutations in the WPP domain-interacting tail-anchored proteins (WITs) and sperm cell-specific expression of a dominant mutant of the CALLOSE SYNTHASE 3 protein. Through pollen-tube guidance assays, we show that the physiologically anuclear mutant pollen tubes maintain the ability to grow and enter ovules. Our findings provide insight into the sperm cell delivery mechanism and illustrate the independence of the tip-localized vegetative nucleus from directional growth control of the pollen tube.