Submissions from 2002
Relative associations of fitness and fatness to fibrinogen, white blood cell count, uric acid and metabolic syndrome, Timothy S. Church, C. E. Finely, Conrad P. Earnest, James B. Kampert, Larry W. Gibbons, and Steven N. Blair
Urinary Excretion of Phytoestrogens and Risk of Breast Cancer among Chinese Women in Shanghai, Qi Dai, Adrian A. Franke, Fan Jin, Xiao-Ou Shu, James R. Hébert, Lauri J. Custer, Jiarong Cheng, Yu-Tang Gao, and Wei Zheng
Translating Evidence-Based Physical Activity Interventions into Practice: The 2010 Challenge, Andrea L. Dunn and Steven N. Blair
The Relation of Body Mass Index, Cardiorespiratory Fitness, and All-Cause Mortality in Women, Stephen W. Farrell, LeeAnn Braun, Carolyn E. Barlow, Yiling J. Cheng, and Steven N. Blair
Urinary excretion of dithiocarbamates and selfreported Cruciferous vegetable intake: application of the ‘method of triads’ to a foodspecific biomarker, Jay H. Fowke, James R. Hébert, and Jed W. Fahey
Systematic errors in middle-aged women's estimates of energy intake: comparing three self-report measures to total energy expenditure from doubly labeled water, James R. Hébert, Cara B. Ebbeling, Charles E. Matthews, Thomas G. Hurley, Yunsheng Ma, Susan Druker, and Lynn Clemow
Dietary exposures and oral precancerous lesions in Srikakulam District, Andhra Pradesh, India, James R. Hébert, Prakash C. Gupta, Ramesh B. Bhonsle, Hemali Mehta, Wei Zheng, Maureen Sanderson, and Jane Teas
Epidemiology of musculoskeletal injuries among sedentary and physically active adults, Jennifer M. Hootman, Caroline A. Macera, Barbara E. Ainsworth, Cheryl L. Addy, Malissa Martin, and Steven N. Blair
Cardiorespiratory fitness and smoking-related and total cancer morality in men, Chong Do Lee and Steven N. Blair
Cardiorespiratory fitness and stroke mortality in men, Chong Do Lee and Steven N. Blair
Moderate to vigorous physical activity and risk of upper-respiratory tract infection, Charles E. Matthews, Ira S. Ockene, Patty S. Freedson, Milagros C. Rosal, Philip A. Merriam, and James R. Hébert
AHA Guidelines for Primary Prevention of Cardiovascular Disease and Stroke: 2002 Update - Consensus Panel Guide to Comprehensive Risk Reduction for Adult Patients Without Coronary or Other Atherosclerotic Vascular Diseases, Thomas A. Pearson, Steven N. Blair, Stephen R. Daniels, Robert H. Eckel, Joan M. Fair, Stephen F. Fortmann, Barry A. Franklin, Larry B. Goldstein, Philip Greenland, Scott M. Grundy, Yuling Hong, Nancy Houston-Miller, Ronald M. Lauer, Ira S. Ockene, Ralph L. Sacco, James F. Sallis, Sidney C. Smith Jr., Neil J. Stone, and Kathryn A. Taubert
Design of an intervention addressing multiple levels of influence on dietary and activity patterns of low-income, postpartum women, K. E. Peterson, G. Sorensen, M. Pearson, James R. Hébert, B. R. Gottlieb, and M. C. McCormick
Prevention Conference VI: Diabetes and Cardiovascular Disease - Writing Group III: Risk Assessment in Persons With Diabetes, Rita F. Redberg, Philip Greenland, Valentin Fuster, Kalevi Pyörälä, Steven N. Blair, Aaron R. Folsom, Anne B. Newman, Daniel H. O'Leary, Trever J. Orchard, Bruce Psaty, J. Sanford Schwartz, Rodman D. Starke, and Peter W. F. Wilson
The association between joint stress from physical activity and self-reported osteoarthritis: an analysis of the Cooper Clinic data, Laura Q. Rogers, Caroline A. Macera, Jennifer M. Hootman, Barbara E. Ainsworth, and Steven N. Blair
Descriptive epidemiology of body mass index of an urban adult population in western India, H. C. Shukla, P. C. Gupta, H. C. Mehta, and James R. Hébert
Submissions from 2001
Participation of Lycopene and Beta-Carotene in Carcinogenesis: Defenders, Aggressors, or Passive Bystanders?, Lenore Arab, Susan E. Steck, and Phyllis Bowen
Is physical activity or physical fitness more important in defining health benefits?, Steven N. Blair, Yiling Cheng, and J. Scott Holder
Physical fitness and activity as separate heart disease risk factors: a meta-analysis, Steven N. Blair and Andrew S. Jackson
Nutrient intake of physically fit and unfit men and women, Suzanne Brodney, R. Sue McPherson, Ruth A. Carpenter, Desiree C. Welten, and Steven N. Blair
Epstein-Barr virus-associated B cell lymphoproliferative disorder following mismatched related T cell-depleted bone marrow transplantation, K. Y. Chiang, Linda J. Hazlett, K. T. Godder, S. H. Abhyankar, N. P. Christiansen, F. van Rhee, C. G. Lee, Kerry D. Bridges, Rudolph S. Parrish, and P. Jean Henslee-Downey
Usefulness of Cardiorespiratory Fitness as a Predictor of All-Cause and Cardiovascular Disease Mortality in Men With Systemic Hypertension, Timothy S. Church, James B. Kampert, Larry W. Gibbons, Carolyn E. Barlow, and Steven N. Blair
Evaluating the reproducibility and validity of the Aerobic Adaptation Test, Timothy S. Church, James B. Kampert, William J. Wilkinson, Andrea L. Dunn, and Steven N. Blair
Macronutrient intake and estrogen metabolism in healthy postmenopausal women, Jay H. Fowke, Christopher Longcope, and James R. Hébert
Field evaluation of energy expenditure from continuous and intermittent walking in women, Janet E. Fulton, Louise C. Mâsse, Susan R. Tortolero, Kathleen B. Watson, Kritiann C. Heesch, Harold W. Kohl III, Steven N. Blair, and Carl J. Caspersen
Change in women's diet and body mass following intensive intervention for early-stage breast cancer, James R. Hébert, Cara B. Ebbeling, Barbara C. Olendzki, Thomas G. Hurley, Yunsheng Ma, Nancy Saal, Judith K. Ockene, and Lynn Clemow
The effect of social desirability trait on self-reported dietary measures among multi-ethnic female health center employees, James R. Hébert, Karen E. Peterson, Thomas G. Hurley, Anne M. Stoddard, Nancy L. Cohen, Alison E. Field, and Glorian Sorensen
Association among Physical Activity Level, Cardiorespiratory Fitness, and Risk of Musculoskeletal Injury, Jennifer M. Hootman, Caroline A. Macera, Barbara E. Ainsworth, Malissa Martin, Cheryl L. Addy, and Steven N. Blair
Osteoporosis Prevention, Diagnosis, and Therapy, Anne Kilbanski, Lucile Adams-Campbell, Tamsen Bassford, Steven N. Blair, Scott D. Boden, Kay Dickersin, David R. Gifford, Lou Glasse, Steven R. Goldring, Keith Hruska, Laura K. McCauley, and William E. Russell
Epidemiologic Data on the Relationships of Caloric Intake, Energy Balance, and Weight Gain Over the Life Span With Longevity and Morbidity, I-Min Lee, Steven N. Blair, David B. Allison, Aaron R. Folsom, Tamara B. Harris, JoAnn E. Manson, and Rena R. Wing
Seasonal variation in household, occupational, and leisure time physical activity: longitudinal analyses from the seasonal variation of blood cholesterol study, Charles E. Matthews, Patty S. Freedson, James R. Hébert, Edward J. Stanek III, Philip A. Merriam, Milagros C. Rosal, Cara B. Ebbeling, and Ira S. Ockene
Sources of Variance in Daily Physical Activity Levels in the Seasonal Variation of Blood Cholesterol Study, Charles E. Matthews, James R. Hébert, Patty S. Freedson, Edward J. Stanek III, Philip A. Merriam, Cara B. Ebbeling, and Ira S. Ockene
Lifetime physical activity and breast cancer risk in the Shanghai Breast Cancer Study, Charles E. Matthews, Xiao-Ou Shu, Fan Jin, Qi Dai, James R. Hébert, Z-X. Ruan, Yu-Tang Gao, and Wei Zheng
Enhancing Adherence to Clinical Exercise Trials, Heather A. O'Neal and Steven N. Blair
A history of physical activity, cardiovascular health and longevity: the scientific contributions of Jeremy N Morris, DSc, DPH, FRCP, Ralph S. Paffenbarger Jr., Steven N. Blair, and I-Min Lee
Facilitating dietary change: the patient-centered counseling model, Milagros C. Rosal, Cara B. Ebbeling, Ingrid Lofgren, Judith K. Ockene, Ira S. Ockene, and James R. Hébert
Behavioral risk factors among members of a health maintenance organization, Milagros C. Rosal, Judith K. Ockene, Yunsheng Ma, James R. Hébert, Philip A. Merriam, Charles E. Matthews, and Ira S. Ockene
Effect of Antioxidant Supplementation on Ozone-Induced Lung Injury in Human Subjects, James M. Samet, Gary E. Hatch, Donald Horstman, Susan E. Steck, Lenore Arab, Philip A. Bromberg, Mark Levine, William F. McDonnell, and Robert B. Devlin
Can diet in conjunction with stress reduction affect the rate of increase in prostate specific antigen after biochemical recurrence of prostate cancer?, Gordon A. Saxe, James R. Hébert, James F. Carmody, J. Kabat-Zinn, Penny H. Rosenzweig, David Jarzobski, George W. Reed, and Robert D. Blute
Dietary folate intake and breast cancer risk: results from the Shanghai Breast Cancer Study, Martha J. Shrubsole, Fan Jin, Qi Dai, Xiao-Ou Shu, John D. Potter, James R. Hébert, Yu-Tang Gao, and Wei Zheng
Association of body size and fat distribution with risk of breast cancer among Chinese women, Xiao-Ou Shu, Fan Jin, Qi Dai, Jian Shi, John D. Potter, Louise A. Brinton, James R. Hébert, Z-X. Ruan, Yu-Tang Gao, and Wei Zheng
Effects of Physical Activity Counseling in Primary Care: The Activity Counseling Trial: A Randomized Controlled Trial, Denise G. Simons-Morton, Steven N. Blair, Abby C. King, Timothy M. Morgan, William B. Applegate, Mary O'Toole, William L. Haskell, Cheryl A. Albright, Stuart J. Cohen, Paul M. Ribisi, and Joanna H. Shih
AHA/ACC Guidelines for Preventing Heart Attack and Death in Patients With Atherosclerotic Cardiovascular Disease: 2001 Update - A Statement for Healthcare Professionals From the American Heart Association and the American College of Cardiology, Sidney C. Smith Jr., Steven N. Blair, Robert O. Bonow, Lawrence M. Brass, Manuel D. Cerqueira, Kathleen Dracup, Valentin Fuster, Antonio M. Gotto, Scott M. Grundy, Nancy Houston-Miller, Alice Jacobs, Daniel Jones, Ronald M. Krauss, Lori Mosca, Ira S. Ockene, Richard C. Pasternak, Thomas A. Pearson, Marc A. Pfeffer, Rodman K. Starke, and Kathryn A. Taubert
Differences in dietary patterns of Vietnamese, white, African-American, and Hispanic adolescents in Worcester, Mass., John M. Wiecha, Aliza K. Fink, Jean Wiecha, and James R. Hébert
Submissions from 2000
Cardiovascular disease prevention by sports: myth or reality?, Maria João C. A. Almeida and Steven N. Blair
Lycopene and cardiovascular disease, Lenore Arab and Susan E. Steck
Incremental Reduction of Serum Total Cholesterol and Low-Density Lipoprotein Cholesterol With the Addition of Plant Stanol Ester-Containing Spread to Statin Therapy, Steven N. Blair, David M. Capuzzi, Sidney O. Gottlieb, Tu Nguyen, John M. Morgan, and Nilo B. Cater
Sedentary Habits, Health, and Function in Older Men and Women, Steven N. Blair and Ming Wei
Muscular strength and physical function, Patricia A. Brill, Caroline A. Macera, Dorothy R. Davis, Steven N. Blair, and Neil F. Gordon
Does physical activity reduce the risk of developing peptic ulcers?, Yiling J. Cheng, Caroline A. Macera, Dorothy R. Davis, and Steven N. Blair
Physical activity and self-reported, physician-diagnosed osteoarthritis: is physical activity a risk factor?, Yiling Cheng, Caroline A. Macera, Dorothy R. Davis, Barbara E. Ainsworth, Philip J. Troped, and Steven N. Blair
Heart rate variability, trait anxiety, and perceived stress among physically fit men and women, Rod K. Dishman, Yoshio Nakamura, Melissa E. Garcia, Ray W. Thompson, Andrea L. Dunn, and Steven N. Blair
Osteoarthritis: New Insights. Part 2: Treatment Approaches, David T. Felson, Reva C. Lawrence, Marc C. Hochberg, Timothy McAlindon, Paul A. Dieppe, Marian A. Minor, Steven N. Blair, Brian M. Berman, James F. Fries, Morris Weinberger, Kate R. Lorig, Joshua J. Jacobs, and Victor Goldberg
Maximal Exercise Test as a Predictor of Risk for Mortality from Coronary Heart Disease in Asymptomatic Men, Larry W. Gibbons, Tedd L. Mitchell, Ming Wei, Steven N. Blair, and Kenneth H. Cooper
Partially Mismatched Related-Donor Bone Marrow Transplantation for Pediatric Patients With Acute Leukemia: Younger Donors and Absence of Peripheral Blasts Improve Outome, K. T. Godder, Linda J. Hazlett, S. H. Abhyankar, K. Y. Chiang, N. P. Christiansen, Kerry D. Bridges, C. G. Lee, S. S. Geier, K. S. Goon-Johnson, Adrian P. Gee, A. R. Pati, Rudolph S. Parrish, and P. Jean Henslee-Downey
Sources of variability in dietary intake in two distinct regionsof rural India: implications for nutrition study design and interpretation, James R. Hébert, Prakash C. Gupta, H. C. Mehta, Cara B. Ebbeling, R. R. Bhonsle, and F. Varghese
Physical Activity Behavior Change: Issues in Adoption and Maintenance, Bess H. Marcus, LeighAnn H. Forsyth, Elaine J. Stone, Patricia M. Dubbert, Thomas L. McKenzie, Andrea L. Dunn, and Steven N. Blair
Comparing physical activity assessment methods in the Seasonal Variation of Blood Cholesterol Study, Charles E. Matthews, Patty S. Freedson, James R. Hébert, Edward J. Stanek III, Philip A. Merriam, and Ira S. Ockene
Design and Estimation in the Limiting Dilution Assay when Concentrations Vary Widely Among Samples, Rudolph S. Parrish and Linda J. Hazlett
Gender Differences in Functioning for Older Adults in Rural Bangladesh: The Impact of DIfferential Reporting?, M. Omar Rahman and Jihong Liu
Cost-Effectiveness of Lifestyle and Structured Exercise Interventions in Sedentary Adults: Results of Project ACTIVE, Mary Ann Sevick, Andrea L. Dunn, Melba S. Morrow, Bess H. Marcus, G. John Chen, and Steven N. Blair
Low Cardiorespiratory Fitness and Physical Inactivity as Predictors of Mortality in Men with Type 2 Diabetes, Ming Wei, Larry W. Gibbons, James B. Kampert, Milton Z. Nichaman, and Steven N. Blair
Alcohol Intake and Incidence of Type 2 Diabetes in Men, Ming Wei, Larry W. Gibbons, Tedd L. Mitchell, James B. Kampert, and Steven N. Blair
Low Fasting Plasma Glucose Level as a Predictor of Cardiovascular Disease and All-Cause Mortality, Ming Wei, Larry W. Gibbons, Tedd L. Mitchell, James B. Kampert, Michael P. Stern, and Steven N. Blair
A comparative evaluation of three accelerometry-based physical activity monitors, Gregory J. Welk, Steven N. Blair, Kherrin Wood, Shelby Jones, and Raymond W. Thompson
The utility of the Digi-Walker step counter to assess daily physical activity patterns, Gregory J. Welk, Jerome A. Differding, Raymond W. Thompson, Steven N. Blair, Jim Dziura, and Peter Hart
Comparison of a dietary record using reported portion size versus standard portion size for assessing nutrient intake, Desiree C. Welten, Ruth A. Carpenter, R. Sue McPherson, Suzanne Brodney, Deirdre Douglass, James B. Kampert, and Steven N. Blair
Submissions from 1999
A randomized, multicenter trial of weight-adjusted intravenous heparin dose titration and point-of-care coagulation monitoring in hospitalized patients with active thromboembolic disease, Richard C. Becker, Steven P. Ball, Paul Eisenberg, Steven Borzak, A. Christian Held, Frederick Spencer, Stephen J. Voyce, Robert Jesse, Robert Hendel, Yunsheng Ma, Thomas G. Hurley, and James R. Hébert
Thrombin generation after the abrupt cessation of intravenous unfractionated heparin among patients with acute coronary syndromes: Potential mechanisms for heightened prothrombotic potential, Richard C. Becker, Frederick Spencer, Youfu Li, Steven P. Ball, Yunsheng Ma, Thomas G. Hurley, and James R. Hébert
Physical activity in the prevention and treatment of obesity and its comorbidities, Steven N. Blair and Claude Bouchard
Effects of physical inactivity and obesity on morbidity and mortality: current evidence and research issues, Steven N. Blair and Suzanne Brodney
Introductory comments for the consensus on physical activity and obesity, Claude Bouchard and Steven N. Blair
Lifestyle and Structured Interventions to Increase Physical Activity - Reply, Andrea L. Dunn, Steven N. Blair, James B. Kampert, Bess H. Marcus, Melissa E. Garcia, and Harold W. Kohl III
Comparison of Lifestyle and Structured Interventions to Increase Physical Activity and Cardiorespiratory Fitness: A Randomized Trial, Andrea L. Dunn, Bess H. Marcus, James B. Kampert, Melissa E. Garcia, Harold W. Kohl III, and Steven N. Blair
A dietitian-delivered group nutrition program leads to reductions in dietary fat, serum cholesterol, and body weight: the Worcester Area Trial for Counseling in Hyperlipidemia (WATCH), James R. Hébert, Cara B. Ebbeling, Ira S. Ockene, Yunsheng Ma, Linda Rider, Philip A. Merriam, Judith K. Ockene, and Gordon Saperia
Development and testing of a quantitative food frequency questionnaire for use in Gujarat, India, James R. Hébert, Prakash C. Gupta, Ramesh B. Bhonsle, Pesi N. Sinor, Hemali Mehta, and Fali S. Mehta
Expression of CD134 (0X-40) On T Cells During the First 100 Days Following Allogeneic Bone Marrow Transplantation as a Marker for Lymphocyte Activation and Therapy-Resistant Graft-Versus-Host Disease, L. S. Lamb, Jr.; S. A. Abhyankar; Linda J. Hazlett; W. O'Neal; R. S. Folk; S. Vogt; Rudolph S. Parrish; Kerry D. Bridges; P. Jean Henslee-Downey; and Adrian P. Gee
Influence of T Cell Depletion Method on Circulating γδ T Cell Reconstitution and Potential Role in the Graft-Versus-Leukemia Effect, L. S. Lamb, Jr.; Adrian P. Gee; Linda J. Hazlett; P. Musk; T. P. O'Hanlon; S. S. Geier; R. S. Folk; W. G. Harris; K. McPherson; C. G. Lee; and P. Jean Hanslee-Downey
Cardiorespiratory fitness, body composition, and all-cause and cardiovascular disease mortality in men, Chong Do Lee, Steven N. Blair, and Andrew S. Jackson
Detecting Bouts of Physical Activity in a Field Setting, Louise C. Mâsse, Janet E. Fulton, Kathleen B. Watson, Kritiann C. Heesch, Harold W. Kohl III, Steven N. Blair, and Susan R. Tortolero
A One-Year Follow-Up to Physical Activity and Health: A Report of the Surgeon General, James R. Morrow Jr., Allen W. Jackson, Terry L. Bazzarre, Dennis Milne, and Steven N. Blair
Effect of physician-delivered nutrition counseling training and an office-support program on saturated fat intake, weight, and serum lipid measurements in a hyperlipidemic population: Worcester Area Trial for Counseling in Hyperlipidemia (WATCH), Ira S. Ockene, James R. Hébert, Judith K. Ockene, Gordon Saperia, Edward J. Stanek III, Robert J. Nicolosi, Philip A. Merriam, and Thomas G. Hurley
Brief physician- and nurse practitioner-delivered counseling for high-risk drinkers: does it work?, Judith K. Ockene, Abigail Adams, Thomas G. Hurley, Elizabeth V. Wheeler, and James R. Hébert
Comparing food intake using the Dietary Risk Assessment with multiple 24-hour dietary recalls and the 7-Day Dietary Recall, Barbara Olendzki, Thomas G. Hurley, James R. Hébert, Sarah Ellis, Philip A. Merriam, Rose Luippold, Linda Rider, and Ira S. Ockene
A Multivariate Approach for Assessing Severity of Acute Graft-Versus-Host Disease in Bone Marrow Transplantation, Rudolph S. Parrish, Linda J. Hazlett, Kerry D. Bridges, and P. Jean Henslee-Downey
The patient exit interview as an assessment of physician-delivered smoking counseling interventions: A validation study, Lori Pbert, Abigail Adams, Mark Quirk, James R. Hébert, Judith K. Ockene, and Rose Luippold
Childhood and adolescent physical activity patterns and adult physical activity, Wendell C. Taylor, Steven N. Blair, Sharon S. Cummings, Chuan Chuan Wun, and Robert M. Malina
The Association between Cardiorespiratory Fitness and Impaired Fasting Glucose and Type 2 Diabetes Mellitus in Men, Ming Wei, Larry W. Gibbons, Tedd L. Mitchell, James B. Kampert, Chong Do Lee, and Steven N. Blair
Relationship Between Low Cardiorespiratory Fitness and Mortality in Normal-Weight, Overweight, and Obese Men, Ming Wei, James B. Kampert, Carolyn E. Barlow, Milton Z. Nichaman, Larry W. Gibbons, Ralph S. Paffenbarger Jr., and Steven N. Blair
Physical fitness and clustering of risk factors associated with the metabolic syndrome, Mitchell H. Whaley, James B. Kampert, Harold W. Kohl III, and Steven N. Blair
Fluorescence in Situ Hybridization Analysis of HER-2/neu, c-myc, and p53 in Endometrial Cancer, James A. Williams, Jr.; Zong-Ren Wang; Rudolph S. Parrish; Linda J. Hazlett; S. Terrell Smith; and S. Robert Young
Submissions from 1998
Activity Counseling Trial (ACT): rationale, design, and methods, Steven N. Blair, William B. Applegate, Andrea L. Dunn, Walter H. Ettinger, William L. Haskell, Abby C. King, Timothy M. Morgan, Joann H. Shih, and Denise G. Simons-Morton
Cooper Institute/The American College of Sports Medicine: 1997 Physical Activity Interventions Conference, Steven N. Blair and James R. Morrow Jr.
Cardiorespiratory fitness determined by exercise heart rate as a predictor of mortality in the Aerobics Center Longitudinal Study, Steven N. Blair, Ming Wei, and Chong Do Lee
Improvements in Cardiorespiratory Fitness Attenuate Age-related Weight Gain in Healthy Men and Women: The Aerobics Center Longitudinal Study, L. DiPietro, Harold W. Kohl III, Carolyn E. Barlow, and Steven N. Blair
Six-month physical activity and fitness changes in Project Active, a randomized trial, Andrea L. Dunn, Melissa E. Garcia, Bess H. Marcus, James B. Kampert, Harold W. Kohl III, and Steven N. Blair
Influences of cardiorespiratory fitness levels and other predictors on cardiovascular disease mortality in men, Stephen W. Farrell, James B. Kampert, Harold W. Kohl III, Carolyn E. Barlow, Caroline A. Macera, Ralph S. Paffenbarger Jr., Larry W. Gibbons, and Steven N. Blair
Impact of work site health promotion on stages of dietary change: the Working Well Trial, Karen Glanz, Ruth E. Patterson, Alan R. Kristal, Ziding Feng, Laura Linnan, Jerianne Heimendinger, and James R. Hébert
Cardiorespiratory fitness and cardiovascular disease risk factors in postmenopausal women, Bryan L. Haddock, Helen P. Hopp, Jennifer J. Mason, Glen Blix, and Steven N. Blair
Development and testing of a quantitative food frequency questionnaire for use in Kerala, India, James R. Hébert, Prakash C. Gupta, Ramesh B. Bhonsle, P. R. Murti, Hemali Mehta, Florence Verghese, Mira Aghi, Kamala Krishnaswamy, and Fali S. Mehta