Foot Loading Associated with Barefoot, Shod, and Minimalist Running in Male Rearfoot Strikers

2020 ◽  
Vol 110 (6) ◽  
Author(s):  
Gauthier Debugne ◽  
Maarten Eerdekens ◽  
Helen Peters ◽  
Filip Staes ◽  
William Bertucii ◽  
...  
Keyword(s):  
Clinical Reasoning ◽  
Repeated Measures ◽  
Center Of Pressure ◽  
Force Distribution ◽  
Initial Contact ◽  
Contact Phase ◽  
Barefoot Running ◽  
Repeated Measures Analysis ◽  
Foot Loading ◽  
Plantar Force

Background We aimed to determine the center of pressure (COP) trajectories and regional pressure differences in natural rearfoot strikers while running barefoot, running with a minimalist shoe, and running with a traditional shoe. Methods Twenty-two male natural rearfoot strikers ran at an imposed speed along an instrumented runway in three conditions: barefoot, with a traditional shoe, and with a minimalist shoe. Metrics associated to the COP and regional plantar force distribution, captured with a pressure platform, were compared using one-way repeated-measures analysis of variance. Results The forefoot contact phase was found to be significantly shorter in the barefoot running trials compared with the shod conditions (P = .003). The initial contact of the COP was located more anteriorly in the barefoot running trials. The mediolateral position of the COP at initial contact was found to be significantly different in the three conditions, whereas the final mediolateral position of the COP during the forefoot contact phase was found to be more lateral in the barefoot condition compared with both shod conditions (P = .0001). The metrics associated with the regional plantar force distribution supported the clinical reasoning with respect to the COP findings. Conclusions The minimalist shoe seems to provide a compromise between barefoot running and running with a traditional shoe.

Efektivitas Comprehensive Breastfeeding Education terhadap Keberhasilan Pemberian Air Susu Ibu Postpartum

1970 ◽  
Vol 1 (2) ◽  
Author(s):  
Irma Nurbaeti ◽  
Kustati Budi Lestari
Keyword(s):  
Repeated Measures ◽  
Breastfeeding Support ◽  
Breastfeeding Practices ◽  
Breastfeeding Education ◽  
Repeated Measures Analysis ◽  
Post Test ◽  
Quasi Experimental ◽  
The Mean ◽  
Convenience Sampling ◽  
Postpartum Mothers

Pemberian Air Susu Ibu (ASI) masih merupakan masalah bagi pemenuhan kebutuhan nutrisi bayi baru lahir. Dukungan agar ibu menyusui bayi merupakan hal penting dalam menginisiasi dan mempertahankan pemberian ASI. Strategi dibutuhkan untuk mendukung keberhasilan menyusui. Tujuan penelitian adalah menganalisis efektivitas comprehensive breastfeeding education terhadap keberhasilan pemberian (ASI) pada periode postpartum. Jenis penelitian ini menggunakan kuasi eksperimen one group pre post test repeated measured design. Jumlah sampel sebanyak 22 ibu dengan menggunakan teknik accidental sampling. Pengumpulan data dilaksanakan pada bulan September–Oktober 2013 di Puskesmas wilayah Kota Tangerang Selatan. Intervensi dilakukan selama 30 menit. Pengumpulan data dilakukan sebelum intervensi, 3 hari setelah intervensi (post1), dan 10 hari setelah intervensi (post 2). Pengumpulan data menggunakan kuesioner dan observasi. Keberhasilan pemberian ASI berdasar pada parameter pengetahuan, langkah menyusui, perlekatan bayi, dan kecukupan ASI. Analisis data menggunakan general linear model repeated measureANOVA. Hasil penelitian menunjukkan adanya signifikansi comprehensive breastfeeding education (p=0.001). Rata-rata keberhasilan pemberian ASI sebelum dan setelah intervensi meningkat. Sebesar 93,9% intervensi memengaruhi tingkat keberhasilan. Rata-rata sebelum intervensi 56,74 (SD 5,92), post 1 sebesar 60,83 (SD 6,38) dan post2 sebesar 74,55 (SD 5,32). Subvariabel yang memiliki efek secara signifikan setelah intervensi adalah pengetahuan (p=0.001) dan langkah menyusui (p=0.001), sedangkan subvariabel perlekatan bayi (p=0.061) dan kecukupan ASI (p=0.162) tidak secara signifikan berbeda antara sebelum dan setelah intervensi. Pelaksanaanbreastfeeding education disarankan pada ibu agar dapat melakukan posisi perlekatan bayi yang benar sehingga dapat mengurangi masalah-masalah berkaitan dengan perlekatan yang tidak sesuai seperti puting perih, lecet atau berdarah, dan bayi kurang puas dalam menyusu yang bisa mengakibatkan gagalnya program ASI ekslusif.Kata kunci:Menyusui, pendidikan, perlekatan, postpartum AbstractBreastfeeding have still been problem for adequate newborn nutrition. Adequate breastfeeding support is essential for mothers to initiate and maintain optimal breastfeeding practices. A strategic needed to support successful breastfeeding. The purpose of research is to analyze the effectiveness comprehensive breastfeeding education on successful breastfeeding at postpartum periods. A quasi-experimental one group pretest, post test, repeated mesaured was used. This study was conducted at public health in Tangerang Selatan municipality in September–October 2013 among 22 postpartum mothers, convenience sampling methods. Intervention was done 30 minute. Data were collected before intervention (pretest), third day after intervention (post 1) and tenth day after intervention (repeated/post 2) using four parameter, that are knowledge, breastfeeding steps, proper lacth-on and adequate breastmilk. Using repeated measures analysis of variance there was a significant increase (p=0.001) in the overall Successful breastfeeding mean. Around 93,9% the effectiveness of intervention influence on successful. The mean before intervention is 56,74 (SD 5,92), increased at post 1:60,83 (SD 6,38) and post 2:74,55 (SD 5,32). Subvariable which has effect significantly after intervention is knowledge (p=0.001) and breastfeeding steps (p=0.001), in contrary, proper latch-on (p=0,061) and adequate breastmilk (p=0.162) have no significant effect after intervention. Suggestion to support breastfeeding education and counselling proper latch-on adequately that can decrease the problem such as painful, creaks or bloody putting.Key words: Breastfeeding, education, latch-on, postpartum

scholarly journals Changes in Maximal Strength and Home Run Performance in NCAA Division I Baseball Players Across 3 Competitive Seasons: A Descriptive Study

2021 ◽  
Vol 6 (1) ◽  
pp. 4
Author(s):  
W. Guy Hornsby ◽  
Abigail L. Tice ◽  
Jason D. Stone ◽  
Justin J. Merrigan ◽  
Joshua Hagen ◽  
...  
Keyword(s):  
Ncaa Division I ◽  
Repeated Measures ◽  
National Collegiate Athletic Association ◽  
Descriptive Study ◽  
Peak Force ◽  
Division I ◽  
Maximal Strength ◽  
Baseball Players ◽  
Repeated Measures Analysis ◽  
Division 1

The purpose of this longitudinal, descriptive study was to observe changes in maximal strength measured via isometric clean grip mid-thigh pull and home runs (total and home runs per game) across three years of training and three competitive seasons for four National Collegiate Athletic Association (NCAA) Division 1 baseball players. A one-way repeated measures analysis of variance (ANOVA) was performed, revealing significant univariate effects of time for peak force (PF) (p = 0.003) and peak force allometrically scaled (PFa) (p = 0.002). Increases in PF were noted from season 1 to season 2 (p = 0.031) and season 3 (p = 0.004), but season 2 was not significantly different than season 3 (p = 0.232). Additionally, increases in PFa were noted from season 1 to season 2 (p = 0.010) and season 3 (p < 0.001), but season 2 was not significantly different than season 3 (p = 0.052). Home runs per game rose from the 2009 (0.32) to 2010 season (1.35) and dropped during the 2011 season (1.07). A unique aspect of the study involves 2010 being the season in which ball-bat coefficient of restitution (BBCOR) bats were introduced to the NCAA competition.

Effects of riparian forest thinning by two types of mechanical harvest on stream fish and habitat in northern Minnesota

2008 ◽  
Vol 38 (2) ◽  
pp. 247-256 ◽  
Author(s):  
Nathaniel A. Hemstad ◽  
Eric C. Merten ◽  
Raymond M. Newman
Keyword(s):  
Repeated Measures ◽  
Riparian Forest ◽  
Canopy Cover ◽  
Stream Habitat ◽  
North Central ◽  
Fine Sediments ◽  
Repeated Measures Analysis ◽  
Stream System ◽  
Tree Length ◽  
Wide Scale

The response of fish communities and stream habitat to four riparian harvest treatments was studied in north-central Minnesota to determine if riparian harvest with two different harvest systems degrades stream systems. Treatments included control (no harvest), riparian control, cut-to-length riparian thin, and tree length riparian thin. Fish and habitat data were collected from 50 m reaches above, within, and downstream of each treatment 1 year preharvest (1997) and 3 years postharvest (1998–2000). Repeated measures analysis revealed few effects due to treatment; however, there was a 6%–10% significant reduction in canopy cover. Percent fine sediments increased significantly (15%) system-wide following forest harvest and persisted through 2000. This increase in fine sediments was correlated with a decrease in fish biotic integrity (r = –0.31). Habitat and fish variables were influenced more by year-to-year variation than by harvest treatment, suggesting that factors operating at a broader basin-wide scale may influence fish and habitat or mask any site-level harvest effects in this low-gradient stream system. Residual riparian basal areas ≥12.3m2/ha along reaches ≤200 m in length may be adequate to protect fish and habitat in these low-gradient streams, but basin-wide effects of harvest deserve more scrutiny.

“Going Backward”: Effects of age and fatigue on posterior-directed falls in Parkinson disease

2021 ◽  
pp. 1-9
Author(s):  
Evan V. Papa ◽  
Rita M. Patterson ◽  
Nicoleta Bugnariu
Keyword(s):  
Postural Control ◽  
Parkinson Disease ◽  
Repeated Measures ◽  
Center Of Pressure ◽  
Angular Displacement ◽  
Reaction Times ◽  
Older Individuals ◽  
Peak Knee ◽  
Significant Difference ◽  
Fatiguing Exercise

BACKGROUND: Nearly half of persons with Parkinson disease (PD) report fatigue as a factor in their fall history. However, it is unknown whether these self-reported falls are caused by a sensation of fatigue or performance fatigue. OBJECTIVE: We sought to investigate the influences of performance fatigue and age on postural control in persons with PD. METHODS: Individuals with PD (n = 14) underwent postural control assessments before (T0) and immediately after (T1) fatiguing exercise. Biomechanical data were gathered on participants completing a treadmill-induced, posterior-directed fall. Performance fatigue was produced using lower extremity resistance exercise on an isokinetic ergometer. Repeated measures ANCOVAs were used with age as a covariate to determine the effects of performance fatigue on biomechanical variables. RESULTS: After adjustment for age, there was a statistically significant difference in peak center of pressure (COP) latency during the support phase of recovery. Pairwise comparisons demonstrated a decrease in peak ankle displacement from T0 to T1. Age was also found to be significantly related to reaction time and peak knee displacement while participants were fatigued. CONCLUSIONS: The decreased peak COP latency, along with decreased ankle angular displacement, suggest that persons with PD adopt a stiffening strategy in response to backward directed falls. Postural stiffening is not uncommon in persons with PD and could be a risk factor for falls. Older individuals with PD demonstrate slower mobility scores and decreased reaction times in the setting of fatigue, suggesting a combined effect of the aging and fatigue processes.

scholarly journals Comparison of Two Novel Methods for Sink Drain Disinfection

2020 ◽  
Vol 41 (S1) ◽  
pp. s180-s180
Author(s):  
Muhammed Fawwaz Haq ◽  
Lucas Jones ◽  
Natalia Pinto Herrera ◽  
Jennifer Cadnum ◽  
Philip Carling ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Contact Time ◽  
Healthcare Facility ◽  
Gram Negative ◽  
Disinfection Methods ◽  
Initial Reduction ◽  
Repeated Measures Analysis ◽  
Potential Reservoir ◽  
Cleaning And Disinfection

Background: Sink drainage systems are a potential reservoir for the dissemination of gram-negative bacilli but are not amenable to standard methods of cleaning and disinfection. Pouring liquid disinfectants down drains has only a limited and transient effect on drain colonization, presumably due to inadequate disinfectant contact time and suboptimal penetration into areas harboring biofilm-associated organisms. Methods: We compared the antimicrobial efficacy of 2 novel sink disinfection methods intended to enhance disinfectant contact time and penetration. Healthcare facility sinks were randomly assigned to disinfection with 300 mL hydrogen peroxide-based disinfectant applied either as a foam (N = 13 sinks) or instilled for 30 minutes behind a temporary obstruction created by an inflated urinary catheter balloon (N = 12 sinks). Swabs were used to collect quantitative cultures from the proximal sink drain to depth of 2.5 cm (1 inch) below the strainer before treatment and at 15 minutes and 1, 2, 3, 5, and 7 days after treatment. Repeated measures analysis of variance was performed to compare the efficacy of the 2 treatments. Results: As shown in Fig. 1, both methods yielded an initial reduction of >3 log10 CFU of gram-negative bacilli. Over the 7-day follow-up period, disinfectant instillation resulted in significantly greater reduction than the foam application (P < .01). Recovery of sink colonization to >2 log per swab occurred at day 3 for both treatments, whereas recovery to >3 log per swab occurred on day 3 for the foam treatment versus day 7 for disinfectant instillation. Conclusions: Two novel disinfection methods were effective in reducing sink drain colonization for several days. The instillation method was more effective than the foam method in maintaining reductions over 7 days.Funding: NoneDisclosures: NoneDisclosures: NoneFunding: None

Racial Battle Fatigue: The Experiences of Black/African American, Biracial Black, and Multiracial Black Identified Graduate Students

2021 ◽  
pp. 009579842110026
Author(s):  
Catherine C. Ragland Woods ◽  
Krista M. Chronister ◽  
Aleksandria Perez Grabow ◽  
William E. Woods ◽  
Kyndl Woodlee
Keyword(s):  
Graduate Students ◽  
Repeated Measures ◽  
Racial Microaggressions ◽  
Black African ◽  
Student Role ◽  
Education Experience ◽  
White Institutions ◽  
Repeated Measures Analysis ◽  
Battle Fatigue ◽  
Clinical Graduate Students

Black students attending historically White institutions of higher education experience racism, racial microaggressions, racial stress, and consequent racial battle fatigue (RBF; Franklin et al., 2014). We examined Black counseling and clinical graduate students’ (BGS) experiences of psychological, physiological, and behavioral RBF across their roles as students in class, advisees, and supervisees and differences in RBF experiences by gender and race. Participants were 57 counseling and clinical graduate students who identified as Monoracial, Biracial, or Multiracial Black. One-way, repeated measures analysis of variance results showed that BGS experienced the highest levels of RBF in their student-in-class role, and those experiences differed for women and men. Results suggest that the RBF framework has utility for measuring and further understanding how BGS’ student role and learning contexts influence their postsecondary experiences and how institutions can develop better supports for this student population.

scholarly journals Longitudinal Change of Mental Health among Active Social Media Users in China during the COVID-19 Outbreak

Healthcare ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 833
Author(s):  
Tianli Liu ◽  
Sijia Li ◽  
Xiaochun Qiao ◽  
Xinming Song
Keyword(s):  
Mental Health ◽  
Social Media ◽  
Repeated Measures ◽  
Mainland China ◽  
Longitudinal Change ◽  
Symptom Checklist ◽  
Learning Models ◽  
Online Data ◽  
Repeated Measures Analysis ◽  
Machine Learning Models

During the COVID-19 pandemic, every day, updated case numbers and the lasting time of the pandemic became major concerns of people. We collected the online data (28 January to 7 March 2020 during the COVID-19 outbreak) of 16,453 social media users living in mainland China. Computerized machine learning models were developed to estimate their daily scores of the nine dimensions of the Symptom Checklist—90 (SCL-90). Repeated measures analysis of variance (ANOVA) was used to compare the SCL-90 dimension scores between Wuhan and non-Wuhan residents. Fixed effect models were used to analyze the relation of the estimated SCL-90 scores with the daily reported cumulative case numbers and lasting time of the epidemic among Wuhan and non-Wuhan users. In non-Wuhan users, the estimated scores for all the SCL-90 dimensions significantly increased with the lasting time of the epidemic and the accumulation of cases, except for the interpersonal sensitivity dimension. In Wuhan users, although the estimated scores for all nine SCL-90 dimensions significantly increased with the cumulative case numbers, the magnitude of the changes was generally smaller than that in non-Wuhan users. The mental health of Chinese Weibo users was affected by the daily updated information on case numbers and the lasting time of the COVID-19 outbreak.

Olfactory Stimulation of Preterm Infants with Breast Milk

2021 ◽  
pp. 105477382110189
Author(s):  
Woon Ae Lee ◽  
Jin Suk Ra
Keyword(s):  
Breast Milk ◽  
Preterm Infants ◽  
Repeated Measures ◽  
Physiological Responses ◽  
Nursing Intervention ◽  
Olfactory Stimulation ◽  
Control Group ◽  
Repeated Measures Analysis ◽  
Equivalent Control ◽  
Experimental Group

Maintaining stable physiological responses may be important for the growth and development of preterm infants. The purpose of our study was to evaluate the effects of olfactory stimulation with maternal breast milk on the occurrence of abnormal physiological responses in preterm infants. With a non-equivalent control group pretest-posttest design, 13 preterm infants in the experimental group and 18 preterm infants in the control group completed the intervention. The intervention was implemented three times a day for 5 days in a row with 2 hours of administration per intervention. The frequency of abnormal physiological responses was assessed over 6 days (one day before intervention administration and 5 days during intervention administration). With repeated-measures analysis of variance, the experimental group showed a significantly lower frequency of apnea than the control group ( p = .021). Olfactory stimulation with maternal breast milk may be an effective nursing intervention for reducing apnea episodes in preterm infants.

Location, Location, Location: Accelerometer Placement Affects Steps-Based Physical Activity Outcomes During Pregnancy and Postpartum

2021 ◽  
pp. 155982762110304
Author(s):  
Mallory R. Marshall ◽  
Alexander H. K. Montoye ◽  
Michelle R. Conway ◽  
Rebecca A. Schlaff ◽  
Karin A. Pfeiffer ◽  
...  
Keyword(s):  
Physical Activity ◽  
Repeated Measures ◽  
Time Points ◽  
Repeated Measures Analysis ◽  
Pregnancy And Postpartum ◽  
Vigorous Intensity ◽  
The Right ◽  
Physical Changes ◽  
Intensity Classification ◽  
Measurement Validity

As pregnancy progresses, physical changes may affect physical activity (PA) measurement validity. n = 11 pregnant women (30.1 ± 3.8 years) wore ActiGraph GT3X+ accelerometers on the right hip, right ankle, and non-dominant wrist for 3–7 days during the second and third trimesters (21 and 32 weeks, respectively) and 12 weeks postpartum. Data were downloaded into 60-second epochs from which stepping cadence was calculated; repeated-measures analysis of variance was used to determine significant differences among placements. At all time points, the wrist accelerometer measured significantly more daily steps (9930–10 452 steps/d) and faster average stepping cadence (14.5–14.6 steps/min) than either the hip (4972–5944 steps/d, 7.1–8.6 steps/min) or ankle (7161–8205 steps/d, 10.3–11.9 steps/min) placement, while moderate- to vigorous-intensity activity at the wrist (1.2–1.7 min/d) was significantly less than either hip (3.0–5.9 min/d) or ankle (6.1–7.3 min/d). Steps, cadence, and counts were significantly lower for the hip than the ankle at all time points. Kappa calculated for agreement in intensity classification between the various pairwise comparisons ranged from .06 to .41, with Kappa for hip–ankle agreement (.34–.41) significantly higher than for wrist–ankle (.09–.11) or wrist–hip (.06–.16). These data indicate that wrist accelerometer placement during pregnancy likely results in over counting of PA parameters and should be used with caution.

Is Self-Confidence a Bias Factor in Higher-Order Catastrophe Models? An Exploratory Analysis—A Critique

2005 ◽  
Vol 27 (3) ◽  
pp. 375-381 ◽  
Author(s):  
Gershon Tenenbaum ◽  
Betsy Becker
Keyword(s):  
Repeated Measures ◽  
Measurement Errors ◽  
Quadrant Analysis ◽  
Continuous Variables ◽  
Self Confidence ◽  
Cognitive Anxiety ◽  
Bias Factor ◽  
Repeated Measures Analysis ◽  
Catastrophe Models ◽  
Made In

The current paper criticizes the concept, research methodology, data analyses, and validity of the conclusions made in Hardy, Woodman, and Carrington’s (2004) article published in this journal. In their repeated-measures analysis of data from the performances of 7 golfers, they did not examine changes in performance scores on successive holes. Instead, Hardy et al. used several ANOVA models to examine how performance varied with respect to somatic and cognitive anxiety level and self-confidence interaction. By doing so, their findings produced effects which we argue to be conceptually and empirically limited. We also address problems associated with dichotomization of continuous variables, measurement errors when splitting data, eradication of random significant effects, cell sizes in segmental quadrant analysis, and correlation between somatic and cognitive anxiety. We believe these difficulties prevent any reliable conclusions and/or generalizations from being made.

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