7 results on '"Hackney, Anthony C"'
Search Results
2. Thyroid hormonal responses to intensive interval versus steady-state endurance exercise sessions
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Hackney, Anthony C., Kallman, Ashley, Hosick, Karen P., Rubin, Daniela A., and Battaglini, Claudio L.
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- 2012
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3. Effects of a six-week period of congested match play on plasma volume variations, hematological parameters, training workload and physical fitness in elite soccer players
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Saidi, Karim, Zouhal, Hassane, Rhibi, Fatma, Tijani, Jed M., Boullosa, Daniel, Chebbi, Amel, Hackney, Anthony C., Granacher, Urs, Bideau, Benoit, Ben Abderrahman, Abderraouf, Laboratoire Mouvement Sport Santé (M2S), École normale supérieure - Cachan (ENS Cachan)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Brest (UBO)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de la Manouba [Tunisie] (UMA), Universidade Católica de Brasília (UCB), Université de Tunis, University of North Carolina [Chapel Hill] (UNC), University of North Carolina System (UNC), Universität Potsdam, Université de Rennes (UR)-École normale supérieure - Rennes (ENS Rennes)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Universidade Católica de Brasília=Catholic University of Brasília (UCB), and University of Potsdam = Universität Potsdam
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Male ,Physiology ,Science ,Social Sciences ,Workload ,Biochemistry ,Running ,Body Mass Index ,Strukturbereich Kognitionswissenschaften ,Young Adult ,Animal Cells ,Red Blood Cells ,Soccer ,Medicine and Health Sciences ,[SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO] ,Psychology ,Humans ,Public and Occupational Health ,Hemoglobin ,ddc:610 ,Plasma Volume ,Behavior ,Blood Cells ,Hematologic Tests ,Biological Locomotion ,Biology and Life Sciences ,Proteins ,Hematology ,Physical Activity ,Cell Biology ,Sports Science ,Body Fluids ,Blood ,Adipose Tissue ,Physical Fitness ,Recreation ,Medicine ,ddc:500 ,Cellular Types ,Anatomy ,Research Article ,Sports - Abstract
Objectives The aims of this study were to investigate the effects of a six-week in-season period of soccer training and games (congested period) on plasma volume variations (PV), hematological parameters, and physical fitness in elite players. In addition, we analyzed relationships between training load, hematological parameters and players’ physical fitness. Methods Eighteen elite players were evaluated before (T1) and after (T2) a six-week in-season period interspersed with 10 soccer matches. At T1 and T2, players performed the Yo-Yo intermittent recovery test level 1 (YYIR1), the repeated shuttle sprint ability test (RSSA), the countermovement jump test (CMJ), and the squat jump test (SJ). In addition, PV and hematological parameters (erythrocytes [M/mm3], hematocrit [%], hemoglobin [g/dl], mean corpuscular volume [fl], mean corpuscular hemoglobin content [pg], and mean hemoglobin concentration [%]) were assessed. Daily ratings of perceived exertion (RPE) were monitored in order to quantify the internal training load. Results From T1 to T2, significant performance declines were found for the YYIR1 (p, Postprints der Universität Potsdam : Humanwissenschaftliche Reihe, 572
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- 2019
4. Trunk and Lower Extremity Movement Patterns, Stress Fracture Risk Factors, and Biomarkers of Bone Turnover in Military Trainees.
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Mauntel, Timothy C., Marshall, Stephen W., Hackney, Anthony C., Pietrosimone, Brian G., Cameron, Kenneth L., Peck, Karen Y., Trump, Jesse R., and Padua, Darin A.
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BONE remodeling ,BIOMARKERS ,BIOMECHANICS ,COLLAGEN ,CONFIDENCE intervals ,ENZYME-linked immunosorbent assay ,LEG ,MILITARY education ,PHYSICAL fitness ,QUESTIONNAIRES ,REGRESSION analysis ,RISK assessment ,STATISTICAL sampling ,MILITARY personnel ,STRESS fractures (Orthopedics) ,MULTIPLE regression analysis ,TORSO ,BODY movement ,CROSS-sectional method ,MOTION capture (Human mechanics) ,PHYSICAL activity ,DATA analysis software ,DESCRIPTIVE statistics ,DISEASE risk factors - Abstract
Context: Military service members commonly sustain lower extremity stress fractures (SFx). How SFx risk factors influence bone metabolism is unknown. Understanding how SFx risk factors influence bone metabolism may help to optimize risk-mitigation strategies. Objective: To determine how SFx risk factors influence bone metabolism. Design: Cross-sectional study. Setting: Military service academy. Patients or other participants: Forty-five men (agepre = 18.56 ± 1.39 years, heightpre = 176.95 ± 7.29 cm, masspre = 77.20 ± 9.40 kg; body mass indexpre = 24.68 ± 2.87) who completed Cadet Basic Training (CBT). Individuals with neurologic or metabolic disorders were excluded. Intervention(s): We assessed SFx risk factors (independent variables) with (1) the Landing Error Scoring System (LESS), (2) self-reported injury and physical activity questionnaires, and (3) physical fitness tests. We assessed bone biomarkers (dependent variables; procollagen type I amino-terminal propeptide [PINP] and cross-linked collagen telopeptide [CTx-1]) via serum. Main outcome measure(s): A markerless motion-capture system was used to analyze trunk and lower extremity biomechanics via the LESS. Serum samples were collected post-CBT; enzyme-linked immunosorbent assays determined PINP and CTx-1 concentrations, and PINP : CTx-1 ratios were calculated. Linear regression models demonstrated associations between SFx risk factors and PINP and CTx-1 concentrations and PINP : CTx-1 ratio. Biomarker concentration mean differences with 95% confidence intervals were calculated. Significance was set a priori using α ≤ .10 for simple and α ≤ .05 for multiple regression analyses. Results: The multiple regression models incorporating LESS and SFx risk factor data predicted the PINP concentration (R2 = 0.47, P = .02) and PINP : CTx-1 ratio (R2 = 0.66, P = .01). The PINP concentration was increased by foot internal rotation, trunk flexion, CBT injury, sit-up score, and pre- to post-CBT mass changes. The CTx-1 concentration was increased by heel-to-toe landing and post-CBT mass. The PINP : CTx-1 ratio was increased by foot internal rotation, lower extremity sagittal-plane displacement (inversely), CBT injury, sit-up score, and pre- to post-CBT mass changes. Conclusions: Stress fracture risk factors accounted for 66% of the PINP : CTx-1 ratio variability, a potential surrogate for bone health. Our findings provide insight into how SFx risk factors influence bone health. This information can help guide SFx risk-mitigation strategies. [ABSTRACT FROM AUTHOR]
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- 2020
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5. Body Mass Index and Type 2 Collagen Turnover in Individuals After Anterior Cruciate Ligament Reconstruction.
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Lane, Amy R., Harkey, Matthew S., Davis, Hope C., Luc-Harkey, Brittney A., Stanley, Laura, Hackney, Anthony C., Blackburn, J. Troy, and Pietrosimone, Brian
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OSTEOARTHRITIS ,ANTERIOR cruciate ligament surgery ,BODY composition ,COLLAGEN ,CONFIDENCE intervals ,SERUM ,SEX distribution ,BODY mass index ,CROSS-sectional method ,PHYSICAL activity ,DATA analysis software ,DESCRIPTIVE statistics ,METABOLISM ,PREVENTION - Abstract
Context: Individuals with an anterior cruciate ligament reconstruction (ACLR) are at an increased risk of developing posttraumatic osteoarthritis. How osteoarthritis risk factors, such as increased body mass index (BMI), may influence early changes in joint tissue metabolism is unknown. Objective: To determine the association between BMI and type 2 cartilage turnover in individuals with an ACLR. Design: Cross-sectional study. Setting: Research laboratory. Patients or Other Participants: Forty-five individuals (31 women, 14 men) with unilateral ACLR at least 6 months earlier who were cleared for unrestricted physical activity. Main Outcome Measure(s): Body mass index (kg/m²) and type 2 collagen turnover were the primary outcomes. Body mass index was calculated from objectively measured height and mass. Serum was obtained to measure type 2 collagen turnover, quantified as the ratio of degradation (collagen type 2 cleavage product [C2C]) to synthesis (collagen type 2 C-propeptide [CP2]; C2C : CP2). Covariate measures were physical activity level before ACLR (Tegner score) and current level of disability (International Knee Documentation Committee Index score). Associations of primary outcomes were analyzed for the group as a whole and then separately for males and females. Results: Overall, greater BMI was associated with greater C2C : CP2 (r = 0.32, P = .030). After controlling for covariates (Tegner and International Knee Documentation Committee Index scores), we identified a similar association between BMI and C2C: CP2 (partial r = 0.42, P = .009). Among women, greater BMI was associated with greater C2C : CP2 before (r = 0.47, P=.008) and after (partial r=0.50, P=.008) controlling for covariates. No such association occurred in men. Conclusions: Greater BMI may influence greater type 2 collagen turnover in those with ACLR. Individuals, especially women, who maintain or reduce BMI may be less likely to demonstrate greater type 2 collagen turnover ratios after ACLR. [ABSTRACT FROM AUTHOR]
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- 2019
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6. Ideal cardiovascular health predicts lower risk of abnormal liver enzymes levels in the Chilean National Health Survey (2009–2010).
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García-Hermoso, Antonio, Hackney, Anthony C., and Ramírez-Vélez, Robinson
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CARDIOVASCULAR disease diagnosis , *CARDIOVASCULAR diseases risk factors , *LIVER enzymes , *HEALTH surveys , *MEDICAL care - Abstract
High levels of gamma glutamyltransferase (gamma-GT) and alanine aminotransferase (ALT), as well as fatty liver index (FLI) has been associated with higher cardiovascular disease risk factors in adults. The aim of this study was to examine the relationship between gamma-GT, ALT, and fatty liver index FLI levels across a gradient number of ideal cardiovascular health metrics in a representative sample of adults from the Chilean National Health Survey 2009–2010. Data from 1,023 men and 1,449 women (≥ 15 years) from the Chilean Health Survey 2009–2010 were analyzed. Ideal cardiovascular health was defined as meeting ideal levels of the following components: four behaviours (smoking, body mass index, physical activity and diet adherence) and three factors (total cholesterol, blood pressure and fasting glucose). Adults were grouped into three categories according to their number of ideal cardiovascular health metrics: ideal (5–7 metrics), intermediate (3–4 metrics), and poor (0–2 metrics). Blood levels of gamma-GT and ALT were measured and the FLI was calculated. A higher number of ideal cardiovascular health index metric was associated with lower gamma-GT, ALT and FLI (p from trend analysis <0.001). Also, adults meeting at least 3–4 metrics were predicted less likely to have prevalence of abnormal levels of gamma-GT and FLI (p<0.001) compared to adults who met only 0–2 metrics. These findings reinforce the usefulness of the ideal cardiovascular health metrics proposed by the American Heart Association as a tool to identify target subjects and promote cardiovascular health in South-American adults. [ABSTRACT FROM AUTHOR]
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- 2017
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7. Exercise in Patients With Breast Cancer and Healthy Controls: Energy Substrate Oxidation and Blood Lactate Responses.
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Tosti, Karen P., Hackney, Anthony C., Battaglini, Claudio L., Evans, Elizabeth S., and Groff, Diane
- Abstract
The aim of this study was to compare select aspects of exercise energy metabolism in patients with breast cancer with that of healthy controls across a variety of exercise intensities. Posttreated patients with breast cancer were matched with healthy women based on age, physical fitness level, and menopausal status. Subjects participated in low-, moderate-, and high-intensity submaximal exercise sessions that corresponded with 40% of maximal oxygen consumption (Vo2max), 60% Vo2max, and 70% Vo2max. Oxygen consumption and respiratory exchange ratio were taken during submaximal exercise sessions to determine substrate oxidation rates for carbohydrate (CHO) and fat. Blood lactate and blood glucose were also measured before and after each of the submaximal exercise sessions as indices of CHO metabolism. Results indicate that the patients with breast cancer had a significantly (P ≤ .05) lower CHO oxidation rate and higher fat oxidation rate at all exercise intensities compared with healthy women. The patients with breast cancer had a significantly (P ≤ .05) lower blood lactate response to exercise across all intensities compared with the healthy women. Glucose responses tended (P < .08) to be more elevated in patients with cancer both before and after the exercise sessions. The findings indicate that posttreated patients with breast cancer have augmented fat metabolism and a reduced CHO-based energy metabolism during submaximal exercise. It is unclear whether these changes are the result of the patient’s cancer or their treatment regimen for the cancer. [ABSTRACT FROM PUBLISHER]
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- 2011
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