Anaerobic Work Capacity’s Contribution to 5-km-Race Performance in Female Runners

2012 ◽  
Vol 7 (2) ◽  
pp. 170-174 ◽  
Author(s):  
Cory W. Baumann ◽  
Jeffrey C. Rupp ◽  
Christopher P. Ingalls ◽  
J. Andrew Doyle
Keyword(s):  
Ventilatory Threshold ◽  
Linear Regression Analysis ◽  
Time Trial ◽  
Multiple Linear Regression Analysis ◽  
Running Economy ◽  
Mean Velocity ◽  
Anaerobic Energy ◽  
Anaerobic Work ◽  
The Mean ◽  
Race Performance

Purpose:The purpose of this study was to examine the relationship between anaerobic characteristics and 5-km-race performance in trained female cross-country runners (N = 13).Methods:The runners performed 50-m sprints and a 5-km time trial on an outdoor 400-m track and maximal anaerobic (MART) and aerobic running tests on a motorized treadmill. Anaerobic characteristics were determined by the mean velocity of the 50-m sprint (v50m) and the peak velocity in the MART (vMART). The aerobic characteristics were obtained during the aerobic treadmill test and included maximal oxygen uptake (VO2max), running economy, and ventilatory threshold (VT).Results:Both the vMART (r = .69, P < .01) and VO2max (r = .80, P < .01) correlated with the mean velocity of the 5-km (v5km). A multiple-linear-regression analysis revealed that the combination of VO2max, vMART, and VT explained 81% (R2 = .81, P < .001) of the variation seen in the v5km. The vMART accounted for 31% of the total shared variance, while the combination of VO2max and VT explained the remaining 50%.Conclusions:These results suggest that among trained female runners who are relatively matched, anaerobic energy production can effectively discriminate the v5km and explain a significant amount of the variation seen in 5-km-race performance.

scholarly journals Therapeutic Strategy of Percutaneous Transforaminal Endoscopic Decompression for Stenosis Associated With Adult Degenerative Scoliosis

2020 ◽  
pp. 219256822095903
Author(s):  
Lin-Yu Jin ◽  
Kun Wang ◽  
Zhen-Dong Lv ◽  
Xin-Jin Su ◽  
Hai-Ying Liu ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Cobb Angle ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Lumbar Stenosis ◽  
Degenerative Scoliosis ◽  
Adult Degenerative Scoliosis ◽  
Lateral Subluxation ◽  
The Mean ◽  
Transforaminal Endoscopic Surgery

Study Design: A retrospective study. Objective: To investigate the effects of percutaneous transforaminal endoscopic decompression (PTED) for lumbar stenosis associated with adult degenerative scoliosis and to analyze the correlation between preoperative radiological parameters and postoperative surgical outcomes. Methods: Two years of retrospective data was collected from 46 patients with lumbar stenosis associated with adult degenerative scoliosis who underwent PTED. The visual analog scale (VAS), Oswestry Disability Index, and modified MacNab criteria were used to evaluate the clinical outcomes. Multiple linear regression analysis was used to analyze the correlation between radiological parameters and surgical outcomes. Results: The mean age of the 33 female and 13 male patients was 73.5 ± 8.1 years. The mean follow-up was 27.6 ± 3.5 months (range from 24 to 36). The average coronal Cobb angle was 24.5 ± 8.2°. There were better outcomes of the VAS for leg pain and Oswestry Disability Index after surgery. Based on the MacNab criteria, excellent or good outcomes were noted in 84.78% of patients. Multiple linear regression analysis showed that Cobb angle and lateral olisthy may be the predictors for low back pain. Conclusion: Transforaminal endoscopic surgery may be an effective and safe method for geriatric patients with lumbar stenosis associated with degenerative scoliosis. The predictive factors of clinical outcomes were severe Cobb angle and high degree lateral subluxation. Transforaminal endoscopic surgery may not be recommended for patients with Cobb angle larger than 30° combined with lateral subluxation.

scholarly journals Stigma Among Patients with HIV/AIDS: A Cross Sectional Study in Malaysia

2019 ◽  
Vol 4 (1) ◽  
pp. 26
Author(s):  
Azreen Abdullah ◽  
Adibah Hanim Ismail ◽  
Ching Siew Mooi
Keyword(s):  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Hiv Stigma ◽  
People Living With Hiv ◽  
Sectional Study ◽  
Cross Sectional ◽  
The Mean ◽  
Living With Hiv ◽  
Hiv Aids

Introduction:HIV stigma refers to negative beliefs, feelings and attitudes towards people living with HIV (PLWH), groups associated with PLWH and other key populations at higher risk of HIV infection, such as people who inject drugs, sex workers, men who have sex with men and transgender people. Despite the advancement made in the knowledge and treatment of HIV, PLWH continues to be stigmatized.Objective: To determine the level of HIV stigma and its predictors among people living with HIV/AIDS in a tertiary hospital in Malaysia.Methods: A cross sectional study was conducted among HIV/AIDS patients aged 18 and above at infectious disease clinic in Hospital Sungai Buloh, Gombak, Malaysia. HIV stigma was assessed using Berger’s HIV stigma scale, which is available in Bahasa Malaysia and English.A self-administered questionnaire was used to determine their demographic and clinical characteristics. Multiple linear regression analysis was used to identify the predictors.Results: 526 subjects participated in this study. The mean age of the study population was 33.5± 8.4 years. The majority of the participants were male (90.9%) and contracted HIV through sexual activities (87.8%). The mean score of HIV stigma was 104.7 ± 19.5. Based on multiple linear regression analysis, patients who were unemployed (B = -8.00, 95% confidence interval (CI) = -12.12,-3.88, p = < 0.001) and being on antiretroviral treatment (B = 4.95, 95% (CI) = 0.30, 9.60, p = < 0.037) had higher level of HIV stigma.Conclusions: The level of HIV stigma was high (mean score =104.7 ± 19.5). HIV/AIDS patients who are unemployed and on antiretroviral agents were at risks of having higher level of HIV stigma. Future study is needed urgently to implement intervention that can minimize the stigmatization among patients with HIV/AIDS.International Journal of Human and Health Sciences Vol. 04 No. 01 January’20 Page : 26-35

scholarly journals Insight and Associated Factors among Patients with Schizophrenia in Mental Specialized Hospital, Ethiopia, 2018

2019 ◽  
Vol 2019 ◽  
pp. 1-5 ◽  
Author(s):  
Mandaras Tariku ◽  
Demeke Demilew ◽  
Tolesa Fanta ◽  
Meskerem Mekonnen ◽  
Dessie Abebaw Angaw
Keyword(s):  
Associated Factors ◽  
Linear Regression Analysis ◽  
Prognostic Indicator ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Specialized Hospital ◽  
First Onset ◽  
The Mean ◽  
Negative Syndrome

Background. Insight is the degree of the patient’s awareness and understanding of their attributions, feelings, behavior and disturbing symptoms. Majority of the patients with schizophrenia have poor insight and insight is an important prognostic indicator in schizophrenia to enhance treatment compliances and reducing the risks of clinical deterioration. The main objective of this study was to assess insight and its associated factors among patients with schizophrenia at mental specialized hospital in Ethiopia. Methods. Institutional based cross-sectional study was conducted from May to June 2018 Mental Specialized Hospital among 455 patients with schizophrenia. Insight was measured by an abridged version of Scale to assess unawareness of mental disorder. Positive and Negative Syndrome Scale, Calgary depressive scale, Oslo social support scale was used to identify factors associated with insight. Simple and multiple linear regression analysis were used to assess associated factors of insight in the participants. Results. The mean score of insight was 13.66 (95% CI 13.27, 14.04). Age at first onset of illness, duration of treatments, depressive symptoms were inversely associated with mean insight score; whereas unemployed, positive and negative syndrome, previous hospitalization, >=2 episodes were positively associated with mean insight score. Conclusion. Nearly half of the study participants were scored above the mean insight score so, the clinicians and psychotherapists should have to work together to improve insight among patients with schizophrenia.

Physical Fitness and Performances of an Amputee Cycling World Champion: A Case Study

2012 ◽  
Vol 7 (3) ◽  
pp. 290-294 ◽  
Author(s):  
Paolo Menaspà ◽  
Ermanno Rampinini ◽  
Lara Tonetti ◽  
Andrea Bosio
Keyword(s):  
Physical Fitness ◽  
Ventilatory Threshold ◽  
Time Trial ◽  
Peak Oxygen Uptake ◽  
Published Data ◽  
Lower Limb Amputee ◽  
The Mean ◽  
Hemoglobin Mass ◽  
World Champion

Purpose:To describe the physical fitness of a top-level lower limb amputee (LLA) cyclist and paracycling time-trial (TT) race demands.Methods:The 40-y-old male unilateral transfemoral amputee TT World Champion was tested in a laboratory for peak oxygen uptake (VO2peak), ventilatory threshold (VT2), power output (PO), and hemoglobin mass (Hb-mass). Moreover, several measures (eg, PO, heart rate [HR], cadence) were collected during 4 international TT competitions in the same season. The races’ intensity was evaluated as time spent below, at, or above VT2.Results:The cyclist (1.73 m, 55.0 kg) had a VO2peak of 3.372 L/min (61.3 mL · kg−1 · min−1). The laboratory peak PO was 315 W (5.7 W/kg). The maximal HR was 208 beats/min, and his Hb-mass was 744 g (13.5 g/kg). The TTs were meanly 18 ± 4.5 km in length, and the mean PO was 248 ± 8 W with a cadence of 92 ± 1 rpm. During the TTs, the cyclist spent 23% ± 9% of total time at VT2, 59% ± 10% below, and 18% ± 5% above this intensity.Conclusions:The subject’s relative VO2peak is higher than previously published data on LLA, and surprisingly it is even higher than “good” ACSM normative data for nondisabled people. The intensity of the races was found to be similar to cycling TTs of the same duration in elite female cyclists. These results might be useful to develop specific training schedules and enhance performance of LLA cyclists.

scholarly journals Pretreatment Neutrophil-to-Lymphocyte Ratio Predicts Prognosis in Patients with Diabetic Macular Edema Treated with Ranibizumab

2019 ◽  
Author(s):  
Yuxiang Hu ◽  
Yi Cheng ◽  
Xiaoxuan Xu ◽  
Bo Yang ◽  
Feng Mei ◽  
...  
Keyword(s):  
Macular Edema ◽  
Diabetic Macular Edema ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Neutrophil To Lymphocyte Ratio ◽  
Clinicopathological Parameters ◽  
Intravitreal Ranibizumab ◽  
Lymphocyte Ratio ◽  
Treatment Naïve ◽  
The Mean

Abstract Background: To investigate the prognostic value of the neutrophil-to-lymphocyte ratio (NLR) in patients with diabetic macular edema (DME) treated monthly with ranibizumab. Methods: We retrospectively analyzed the medical records of all patients who received intravitreal ranibizumab (IVR) treatment for DME at the First Affiliated Hospital of Nanchang University between December 2015 and December 2017. Clinicopathological parameters, including NLR, were evaluated to identify predictors of better outcomes of IVR monotherapy. Results: Ninety-one treatment-naïve eyes treated with IVR for DME were retrospectively analyzed in this study. Baseline best-corrected visual acuity (BCVA), neutrophils, NLR, monocyte-to-lymphocyte ratio, and platelet-to-lymphocyte ratio were negatively correlated with the changes in BCVA at 24 weeks compared with the baseline, while baseline central retinal thickness and lymphocytes were positively correlated with the changes in BCVA at 24 weeks compared with the baseline. Multiple linear regression analysis revealed that NLR was independently associated with the mean change of BCVA between baseline and week 24. In addition, patients with NLR < 2.27 showed a better improvement in letter score than those with NLR > 2.27. Conclusion: Pretreatment NLR is independently associated with the BCVA in DME patients treated with IVR, and higher pretreatment NLR may contribute to inferior BCVA outcomes.

scholarly journals A Comparative Study of the Peak Expiratory Flow Rate of Indian and Nepalese Young Adults in a Teaching Institute

2009 ◽  
Vol 47 (169) ◽  
Author(s):  
Parthasarathi Debray ◽  
B M Shreevatsa ◽  
R B MG ◽  
T K Sen ◽  
S Roy ◽  
...  
Keyword(s):  
Young Adults ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Adult Population ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Prediction Equation ◽  
Regression Equation ◽  
Stepwise Multiple Linear Regression ◽  
The Mean

Peak expiratory fl ow rate (PEFR) measurement is the easiest and cheapest method to evaluaterespiratory functions. So, the study was carried out to evaluate PEFR of healthy Nepalese adults andcompare their values with healthy Indian counterparts to know whether Indian prediction equationsfor PEFR can be used for Nepalese adult population or not.One hundred twenty-three healthy, young, non smoker adult Indian (64: 28 Males, 36 Females) andNepalese (59: 32 Males, 27 Females) medical students of 18 to 20 years of age participated in the study.The mean PEFR of Indian (male: 490.4 liter/min, female: 386.0 liter/min) and Nepalese (male: 485.9liter/min, Female: 365.2 liter/min) young adults were found to have no signifi cant differences.As there is no signifi cant difference in the mean PEFR of Indian and Nepalese young adults, predictionequations made for Indian adults can be used to predict PEFR of Nepalese subjects. Therefore, anattempt has been made to formulate a regression equation from the combined Indian and Nepalesesubjects. A stepwise, multiple, linear, regression analysis was performed for this purpose. The analysisshowed that height is the best predictor for PEFR in the present study. The regression equation basedon height for the combined Indian and Nepalese young adults is calculated as: PEFR = 5.687 × Height(cm) – 495.787. However, a stepwise, multiple, linear, regression equation with residual analysisfor the best fi t model was performed to formulate prediction equation for PEFR and this showed achange of the earlier regression equation to PEFR = 5.930 × Height (cm) – 536.131.Keywords: Peak expiratory fl ow rate, peak fl ow meter, prediction equation, spirometry, youngadults

scholarly journals Pretreatment Neutrophil-to-Lymphocyte Ratio Predicts Prognosis in Patients with Diabetic Macular Edema Treated with Ranibizumab

2019 ◽  
Author(s):  
Yuxiang Hu ◽  
Yi Cheng ◽  
Xiaoxuan Xu ◽  
Bo Yang ◽  
Feng Mei ◽  
...  
Keyword(s):  
Macular Edema ◽  
Diabetic Macular Edema ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Neutrophil To Lymphocyte Ratio ◽  
Clinicopathological Parameters ◽  
Intravitreal Ranibizumab ◽  
Lymphocyte Ratio ◽  
Treatment Naïve ◽  
The Mean

Abstract Background: To investigate the prognostic value of the neutrophil-to-lymphocyte ratio (NLR) in patients with diabetic macular edema (DME) treated monthly with ranibizumab. Methods: We retrospectively analyzed the medical records of all patients who received intravitreal ranibizumab (IVR) treatment for DME at the First Affiliated Hospital of Nanchang University between December 2015 and December 2017. Clinicopathological parameters, including NLR, were evaluated to identify predictors of better outcomes of IVR monotherapy. Results: Ninety-one treatment-naïve eyes treated with IVR for DME were retrospectively analyzed in this study. Baseline best-corrected visual acuity (BCVA), neutrophils, NLR, monocyte-to-lymphocyte ratio, and platelet-to-lymphocyte ratio were negatively correlated with the changes in BCVA at 24 weeks compared with the baseline, while baseline central retinal thickness and lymphocytes were positively correlated with the changes in BCVA at 24 weeks compared with the baseline. Multiple linear regression analysis revealed that NLR was independently associated with the mean change of BCVA between baseline and week 24. In addition, patients with NLR < 2.27 showed a better improvement in letter score than those with NLR > 2.27. Conclusion: Pretreatment NLR is independently associated with the BCVA in DME patients treated with IVR, and higher pretreatment NLR may contribute to inferior BCVA outcomes.

scholarly journals Pretreatment Neutrophil-to-Lymphocyte Ratio Predicts Prognosis in Patients with Diabetic Macular Edema Treated with Ranibizumab

2019 ◽  
Author(s):  
Yuxiang Hu ◽  
Yi Cheng ◽  
Xiaoxuan Xu ◽  
Bo Yang ◽  
Feng Mei ◽  
...  
Keyword(s):  
Macular Edema ◽  
Diabetic Macular Edema ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Neutrophil To Lymphocyte Ratio ◽  
Clinicopathological Parameters ◽  
Intravitreal Ranibizumab ◽  
Lymphocyte Ratio ◽  
Treatment Naïve ◽  
The Mean

Abstract Background: To investigate the prognostic value of the neutrophil-to-lymphocyte ratio (NLR) in patients with diabetic macular edema (DME) treated monthly with ranibizumab. Methods: We retrospectively analyzed the medical records of all patients who received intravitreal ranibizumab (IVR) treatment for DME at the First Affiliated Hospital of Nanchang University between December 2015 and December 2017. Clinicopathological parameters, including NLR, were evaluated to identify predictors of better outcomes of IVR monotherapy. Results: Ninety-one treatment-naïve eyes treated with IVR for DME were retrospectively analyzed in this study. Baseline best-corrected visual acuity (BCVA), neutrophils, NLR, monocyte-to-lymphocyte ratio, and platelet-to-lymphocyte ratio were negatively correlated with the changes in BCVA at 24 weeks compared with the baseline, while baseline central retinal thickness and lymphocytes were positively correlated with the changes in BCVA at 24 weeks compared with the baseline. Multiple linear regression analysis revealed that NLR was independently associated with the mean change of BCVA between baseline and week 24. In addition, patients with NLR < 2.27 showed a better improvement in letter score than those with NLR > 2.27. Conclusion: Pretreatment NLR is independently associated with the BCVA in DME patients treated with IVR, and higher pretreatment NLR may contribute to inferior BCVA outcomes.

Abstract WP114: Effect of Prestroke Aspirin on Infarct Volume

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Hosang Yoon ◽  
Wi-Sun Ryu
Keyword(s):  
Propensity Score ◽  
Propensity Score Matching ◽  
Infarct Volume ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Stroke Severity ◽  
Large Artery ◽  
Aspirin User ◽  
The Mean ◽  
Augmented Inverse Probability Weighting

Objective: To investigate if prestroke aspirin use affects infarct volume, generally and by subtype. Background: Prestroke aspirin use may reduce initial stroke severity and improve functional outcome at discharge, especially in the large artery atherosclerosis (LAA) stroke. We investigated whether prestroke aspirin use is associated with infarct volume and the effect of prestroke aspirin on infarct volume is different between LAA versus non-LAA strokes. Methods: A total of 4427 patients were included. The association between infarct volume on DWI and prior aspirin use was assessed by multiple linear regression analysis. To adjust a significant imbalance between aspirin users vs. non-aspirin users, the augmented inverse-probability weighting (AIPW) and propensity score matching were used. Results: Mean age was 67.7(SD 12.4) years and 58.7% were male. 19.6% (n=869) took aspirin before stroke. Prestroke aspirin had an inverse relation with log-infarct volume (P = 0.007) and the effect was significantly modified by LAA versus non-LAA strokes (P for interaction = 0.02). In LAA stroke (n=2336), prestroke aspirin use was independently associated with log-infarct volume (standardized beta = -0.047; P = 0.032). In non-LAA stroke (n=2091), prestroke aspirin was not associated with infarct volume (P = 0.27). Using AIPW and propensity score matching, the mean difference of log-infarct volume between prestroke aspirin user versus non-aspirin uses was -0.28 (95% CI -0.52 to -0.04, P = 0.009) and -0.39 (95% CI -0.67 to -0.11, P = 0.02) in LAA strokes. In non-LAA strokes, AIPW and propensity score matching showed that prestroke aspirin use was not associated with infarct volume (P = 0.27 and P = 0.85, respectively). Conclusions: Our results showed that prestroke aspirin use is negatively associated with initial infarct volume on DWI in LAA strokes but not in non-LAA strokes.

Changes in Walleye (Stizostedion vitreum vitreum) Population in Rainy Lake and Factors in Abundance, 1924–75

1977 ◽  
Vol 34 (10) ◽  
pp. 1696-1702 ◽  
Author(s):  
J. R. Chevalier
Keyword(s):  
Growth Rate ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Water Levels ◽  
Stizostedion Vitreum ◽  
Brood Stock ◽  
Commercial Catch ◽  
Compensatory Response ◽  
The Mean ◽  
Significant Factors

Annual commercial harvests of walleye (Stizostedion vitreum vitreum) from Rainy Lake steadily declined from 150,000 kg in the 1920s to 19,000 in the early 1970s; total (all species) harvests averaged 374,000 kg from 1924 to 1975, 45% greater than the MEI estimated allowable harvest. The walleye catch per unit of effort from commercial 102 mm gill nets declined from 43.63 kg/km in 1948 to 18.43 in 1969. Growth rate of walleye increased from 1959 to 1965, probably as a compensatory response to decreased abundance. The increased growth rate, in conjunction with heavy exploitation, caused the mean age of the walleye commercial catch to decline from 1957 to 1967. Both spring water levels and brood stock abundance were significant factors in walleye abundance 5 yr later. From multiple linear regression analysis, these two variables accounted for 65% of the variation in commercial walleye CUE. Key words: Percidae, Stizostedion, walleye, population dynamics, abundance, yield, exploitation, water level, Rainy Lake, Ontario–Minnesota

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