Jochen Klenk

Summary

Affiliation: University of Ulm
Country: Germany

Publications

  1. doi request reprint Seasonality of vitamin D status in older people in Southern Germany: implications for assessment
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    Age Ageing 42:404-8. 2013
  2. doi request reprint Association of objectively measured physical activity with established and novel cardiovascular biomarkers in elderly subjects: every step counts
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    J Epidemiol Community Health 67:194-7. 2013
  3. doi request reprint Walking on sunshine: effect of weather conditions on physical activity in older people
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    J Epidemiol Community Health 66:474-6. 2012
  4. ncbi request reprint Increasing life expectancy in Germany: quantitative contributions from changes in age- and disease-specific mortality
    Jochen Klenk
    Institute of Epidemiology, Ulm University, Germany
    Eur J Public Health 17:587-92. 2007
  5. doi request reprint Heat-related mortality in residents of nursing homes
    Jochen Klenk
    Department of Clinical Gerontology, Robert Bosch Hospital, Auerbachstr 110, 70376 Stuttgart, Germany
    Age Ageing 39:245-52. 2010
  6. doi request reprint Body mass index and mortality: results of a cohort of 184,697 adults in Austria
    Jochen Klenk
    Institute of Epidemiology, University of Ulm, Helmholtzstrasse 22, 89081 Ulm, Germany
    Eur J Epidemiol 24:83-91. 2009
  7. doi request reprint Femoral fracture rates in people with and without disability
    Kilian Rapp
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    Age Ageing 41:653-8. 2012
  8. pmc Prevalence and determinants of chronic kidney disease in community-dwelling elderly by various estimating equations
    Dietrich Rothenbacher
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Helmholtzstr 22, D 89081, Germany
    BMC Public Health 12:343. 2012
  9. doi request reprint Overweight prevention implemented by primary school teachers: a randomised controlled trial
    Susanne Brandstetter
    Division of Sports and Rehabilitation, Department of Internal Medicine II Cardiology, Ulm University Medical Centre, Eythstrasse 24, Ulm, Germany
    Obes Facts 5:1-11. 2012
  10. doi request reprint Objectively measured physical activity and vitamin D status in older people from Germany
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    J Epidemiol Community Health 69:388-92. 2015

Detail Information

Publications40

  1. doi request reprint Seasonality of vitamin D status in older people in Southern Germany: implications for assessment
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    Age Ageing 42:404-8. 2013
    ..Therefore, the aim of this study was to analyse the effects of seasonal conditions on 25-hydroxyvitamin D (25(OH)D) serum levels in a population-based cohort of older people...
  2. doi request reprint Association of objectively measured physical activity with established and novel cardiovascular biomarkers in elderly subjects: every step counts
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    J Epidemiol Community Health 67:194-7. 2013
    ..To analyse the relationship between objectively measured daily walking duration and cardiovascular biomarkers of inflammation, cardiac dysfunction and renal impairment...
  3. doi request reprint Walking on sunshine: effect of weather conditions on physical activity in older people
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    J Epidemiol Community Health 66:474-6. 2012
    ..It is unclear which weather parameters effect the motion-sensor-based measurement of physical activity in terms of walking duration in older people...
  4. ncbi request reprint Increasing life expectancy in Germany: quantitative contributions from changes in age- and disease-specific mortality
    Jochen Klenk
    Institute of Epidemiology, Ulm University, Germany
    Eur J Public Health 17:587-92. 2007
    ..Between 1962 and 2002 the average life expectancy in Germany has increased from 67.1 years to 75.6 years in men and from 72.7 years to 81.3 in women...
  5. doi request reprint Heat-related mortality in residents of nursing homes
    Jochen Klenk
    Department of Clinical Gerontology, Robert Bosch Hospital, Auerbachstr 110, 70376 Stuttgart, Germany
    Age Ageing 39:245-52. 2010
    ..The nursing home population reveals both factors and may represent a highly vulnerable subgroup. Therefore, temperature-mortality relationship was examined in residents of nursing homes...
  6. doi request reprint Body mass index and mortality: results of a cohort of 184,697 adults in Austria
    Jochen Klenk
    Institute of Epidemiology, University of Ulm, Helmholtzstrasse 22, 89081 Ulm, Germany
    Eur J Epidemiol 24:83-91. 2009
    ..Respiratory diseases contributed to mortality in the lowest BMI category independently from smoking status. Underweight and obesity were both associated with higher all-cause mortality in men and women...
  7. doi request reprint Femoral fracture rates in people with and without disability
    Kilian Rapp
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    Age Ageing 41:653-8. 2012
    ....
  8. pmc Prevalence and determinants of chronic kidney disease in community-dwelling elderly by various estimating equations
    Dietrich Rothenbacher
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Helmholtzstr 22, D 89081, Germany
    BMC Public Health 12:343. 2012
    ..Few data exist in the elderly. The objective of the current study is to estimate the prevalence of CKD by means of various established and new equations and to identify the main determinants of CKD in elderly...
  9. doi request reprint Overweight prevention implemented by primary school teachers: a randomised controlled trial
    Susanne Brandstetter
    Division of Sports and Rehabilitation, Department of Internal Medicine II Cardiology, Ulm University Medical Centre, Eythstrasse 24, Ulm, Germany
    Obes Facts 5:1-11. 2012
    ..To describe the effects of URMEL-ICE, a German school-based intervention for overweight prevention, on children's BMI and other measures of fat mass...
  10. doi request reprint Objectively measured physical activity and vitamin D status in older people from Germany
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    J Epidemiol Community Health 69:388-92. 2015
    ..To analyse the seasonal relationship of objectively measured physical activity with vitamin D status in older persons from Southern Germany (latitude: 48.4°N)...
  11. ncbi request reprint Differences in health behavior, physical fitness, and cardiovascular risk in early, average, and late mature children
    Clemens Drenowatz
    Division of Sports and Rehabilitation Medicine, Ulm University Medical Center, Ulm, Germany
    Pediatr Exerc Sci 25:69-83. 2013
    ..5 vs. -0.2), lower fitness scores (-0.4 vs. 0.2), and spent more time watching TV (51 vs. 43 min/day) compared with their peers. After controlling for BMIPCT differences remained only for fitness in boys and TV time in girls...
  12. doi request reprint Physical performance and daily walking duration: associations in 1271 women and men aged 65-90 years
    Kilian Rapp
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    Aging Clin Exp Res 24:455-60. 2012
    ..It is therefore of interest to what extent physical performance measures are associated with physical activity...
  13. doi request reprint A prospective assessment of cardiac biomarkers for hemodynamic stress and necrosis and the risk of falls among older people: the ActiFE study
    Dhayana Dallmeier
    Department of Internal Medicine II Cardiology, University of Ulm Medical Center, Albert Einstein Allee 23, 89081, Ulm, Germany
    Eur J Epidemiol 31:427-35. 2016
    ..Our results suggest that cardiac troponins may not only identify subjects at risk for cardiovascular diseases, but also help to understand the underlying complex pathophysiology of falls. ..
  14. ncbi request reprint Right ventricular function assessed by tissue Doppler echocardiography in older subjects without evidence for structural cardiac disease
    Roman Laszlo
    Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II Cardiology, University of Ulm, Leimgrubenweg 14, 89070, Ulm, Germany
    Aging Clin Exp Res . 2016
    ..in the context of echocardiographic evaluation of the right heart...
  15. pmc Physical Activity and Different Concepts of Fall Risk Estimation in Older People--Results of the ActiFE-Ulm Study
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany Department of Clinical Gerontology and Rehabilitation, Robert Bosch Hospital, Stuttgart, Germany
    PLoS ONE 10:e0129098. 2015
    ..To investigate the relationship between physical activity and two measures of fall incidence in an elderly population using person-years as well as hours walked as denominators and to compare these two approaches...
  16. pmc Effect of a brief heat exposure on blood pressure and physical performance of older women living in the community-a pilot-study
    Anja Stotz
    Department of Clinical Gerontology and Rehabilitation, Robert Bosch Hospital, 70376 Stuttgart, Germany
    Int J Environ Res Public Health 11:12623-31. 2014
    ..Furthermore, aerobic capacity was reduced after exposure to hot environmental temperatures, which should be considered when recommending exercise to older people during the summer months. ..
  17. pmc Reduction of femoral fractures in long-term care facilities: the Bavarian fracture prevention study
    Clemens Becker
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    PLoS ONE 6:e24311. 2011
    ..It was the objective of the study to evaluate the effect of a fall and fracture prevention program on the incidence of femoral fracture in nursing homes in Bavaria, Germany...
  18. doi request reprint Effect of a statewide fall prevention program on incidence of femoral fractures in residents of long-term care facilities
    Kilian Rapp
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    J Am Geriatr Soc 58:70-5. 2010
    ..To evaluate the effect of a statewide dissemination of a modified evidence-based fall prevention program on incidence of femoral fractures in nursing homes...
  19. pmc Objectively Measured Walking Duration and Sedentary Behaviour and Four-Year Mortality in Older People
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    PLoS ONE 11:e0153779. 2016
    ..Recommendations based on sensor measurements are sparse in older people. The aim of this study was to analyse the effect of objectively measured walking and sedentary duration on four-year mortality in community-dwelling older people...
  20. doi request reprint Femoral fracture rates after discharge from the hospital to the community
    Kilian Rapp
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    J Bone Miner Res 28:821-7. 2013
    ..2 to 4.5 per 1000 person-years, respectively. We conclude that the first weeks at home after discharge from the hospital are associated with an increased risk for femoral fractures...
  21. doi request reprint Hip fractures in institutionalized elderly people: incidence rates and excess mortality
    Kilian Rapp
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    J Bone Miner Res 23:1825-31. 2008
    ..Data are presented for hip fracture rates and excess mortality after a hip fracture. Our results have implications on the timing and the allocation of specific measures for hip fracture prevention...
  22. ncbi request reprint Accuracy of ECG indices for diagnosis of left ventricular hypertrophy in people >65 years: results from the ActiFE study
    Roman Laszlo
    Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II Cardiology, University of Ulm, Leimgrubenweg 14, 89070, Ulm, Germany
    Aging Clin Exp Res . 2016
    ..The detection of left ventricular hypertrophy (LVH) is still a common objective of electrocardiography (ECG) in clinical practice...
  23. pmc Changes of body mass index in relation to mortality: results of a cohort of 42,099 adults
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany Clinic for Geriatric Rehabilitation, Robert Bosch Hospital, Stuttgart, Germany
    PLoS ONE 9:e84817. 2014
    ..The aim of the study was to determine how long-term weight change affects mortality...
  24. doi request reprint Declining prevalence rates for overweight and obesity in German children starting school
    Anja Moss
    Division of Pediatric Endocrinology, Diabetes and Obesity Unit, Department of Pediatrics and Adolescent Medicine, Ulm University, Eythstr 24, 89075 Ulm, Germany
    Eur J Pediatr 171:289-99. 2012
    ..Absolute decrease of prevalence rates was up to 3% for overweight and 1.8% for obesity...
  25. pmc Changes in life expectancy 1950-2010: contributions from age- and disease-specific mortality in selected countries
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Helmholtzstrasse 22, 89081 Ulm, Germany Clinic for Geriatric Rehabilitation, Robert Bosch Hospital, Auerbachstrasse 110, 70376 Stuttgart, Germany
    Popul Health Metr 14:20. 2016
    ..The aim of this study was to quantify changes of life expectancy between 1950 and 2010 and relate these to main causes of death...
  26. doi request reprint Ambulatory Activity Components Deteriorate Differently across Neurodegenerative Diseases: A Cross-Sectional Sensor-Based Study
    Jochen Klenk
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    Neurodegener Dis 16:317-23. 2016
    ..We hypothesized that progressively reduced ambulatory activity is a feature shared across different NDDs, characterized by changes in both common and distinct components...
  27. pmc Inertial Sensor Based Analysis of Lie-to-Stand Transfers in Younger and Older Adults
    Lars Schwickert
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart 70376, Germany
    Sensors (Basel) 16:. 2016
    ..It is possible to describe age-related differences in lie-to-stand transfer performance using inertial sensors. The kinematic analysis remains to be tested on patterns after real-world falls. ..
  28. pmc Fall risk as a function of time after admission to sub-acute geriatric hospital units
    Kilian Rapp
    Department of Clinical Gerontology, Robert Bosch Hospital, Auerbachstr 110, 70376, Stuttgart, Germany
    BMC Geriatr 16:173. 2016
    ..The objective of the study was to analyse fall rates as a function of time after admission to sub-acute hospital units and to evaluate the time-dependent impact of clinical factors at baseline on fall risk...
  29. doi request reprint Concurrent Validity of activPAL and activPAL3 Accelerometers in Older Adults
    Jochen Klenk
    Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    J Aging Phys Act 24:444-50. 2016
    ..3-18.8) for walking and +29.5 min (95% CI: 6.2-52.7) for standing. ActivPAL and activPAL3 showed good agreement in older adults. However, if using these devices interchangeably, observed differences might still bias results. ..
  30. pmc Fall incidence in Germany: results of two population-based studies, and comparison of retrospective and prospective falls data collection methods
    Kilian Rapp
    Department of Clinical Gerontology, Robert Bosch Hospital, Stuttgart, Germany
    BMC Geriatr 14:105. 2014
    ..The aim was to derive estimates of fall incidence from two population-based studies among older community-living people in Germany and compare retrospective and prospective falls data collection methods...
  31. doi request reprint Assessment of fatigability of older women during sit-to-stand performance
    Ulrich Lindemann
    Department of Geriatrics, Clinic for Geriatric Rehabilitation, Robert Bosch Hospital, Auerbachstr 110, 70376, Stuttgart, Germany
    Aging Clin Exp Res 28:889-93. 2016
    ..Fatigability of older adults is relevant with regard to physical performance, falls and physical activity. Objective and inexpensive assessment tools for testing fatigability in the persons' home environment are not available...
  32. doi request reprint Problems of older persons using a wheeled walker
    Ulrich Lindemann
    Department of Geriatrics and Clinic for Geriatric Rehabilitation, Robert Bosch Hospital, Auerbachstr 110, 70376, Stuttgart, Germany
    Aging Clin Exp Res 28:215-20. 2016
    ..Wheeled walkers (WWs) are used to improve mobility and for fall prevention in older persons, but not all users are satisfied with the usability of WWs. Intelligent WWs are being developed to improve the usability...
  33. doi request reprint Change in height, weight, and body mass index: longitudinal data from Austria
    Raphael Simon Peter
    Agency for Preventive and Social Medicine, Bregenz, Austria Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    Am J Hum Biol 26:690-6. 2014
    ..To quantify changes in height, weight and their compound effect on the body mass index (BMI) in a large cohort of Central-European men and women...
  34. doi request reprint Effect of cold indoor environment on physical performance of older women living in the community
    Ulrich Lindemann
    Department of Clinical Gerontology and Rehabilitation, Robert Bosch Hospital, Auerbachstr 110, Stuttgart 70376, Germany
    Age Ageing 43:571-5. 2014
    ..the effects of cold on older persons' body and mind are not well documented, but with an increased number of older people with decreasing physical performance, these possible effects need to be understood...
  35. doi request reprint Determinants of obesity in the Ulm Research on Metabolism, Exercise and Lifestyle in Children (URMEL-ICE)
    Gabriele Nagel
    Institute of Epidemiology, Ulm University, Ulm, Germany
    Eur J Pediatr 168:1259-67. 2009
    ..Physically inactive children with regular consumption of sweetened drinks and no breakfast were prone to be overweight or obese. Changes of these lifestyle factors as targets of interventions are promising to prevent childhood obesity...
  36. pmc The FARSEEING real-world fall repository: a large-scale collaborative database to collect and share sensor signals from real-world falls
    Jochen Klenk
    Department of Clinical Gerontology, Robert Bosch Hospital, Auerbachstr 110, Stuttgart, Germany Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
    Eur Rev Aging Phys Act 13:8. 2016
    ..Therefore, the FARSEEING (FAll Repository for the design of Smart and sElf-adaptive Environments prolonging Independent livinG) consortium and associated partners started to build up a meta-database of real-world falls...
  37. ncbi request reprint Serum uric acid and risk of cardiovascular mortality: a prospective long-term study of 83,683 Austrian men
    Alexander Strasak
    Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, Innsbruck, Austria
    Clin Chem 54:273-84. 2008
    ..Few large-scale epidemiologic studies with sufficient follow-up have addressed the association of SUA and CVD mortality in apparently healthy men across a wide age range...
  38. doi request reprint Serum uric acid is an independent predictor for all major forms of cardiovascular death in 28,613 elderly women: a prospective 21-year follow-up study
    Alexander M Strasak
    Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, Schoepfstrasse 41, A 6020 Innsbruck, Austria
    Int J Cardiol 125:232-9. 2008
    ..Little is known about its predictive value for mortality from congestive heart failure (CHF) and stroke, particularly in elderly, post-menopausal women...
  39. pmc Longitudinal change in serum gamma-glutamyltransferase and cardiovascular disease mortality: a prospective population-based study in 76,113 Austrian adults
    Alexander M Strasak
    Department of Medical Statistics, Innsbruck Medical University, Innsbruck, Austria
    Arterioscler Thromb Vasc Biol 28:1857-65. 2008
    ..The purpose of this study was to investigate the association of longitudinal change in serum gamma-glutamyltransferase (GGT) with mortality from cardiovascular disease (CVD)...
  40. doi request reprint Prospective study of the association of gamma-glutamyltransferase with cancer incidence in women
    Alexander M Strasak
    Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, Innsbruck, Austria
    Int J Cancer 123:1902-6. 2008
    ..006). Our study is the first to demonstrate in a large population-based cohort that high GGT levels significantly increased cancer risk in women...