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Salier Eriksson, J., Ekblom, B., Kallings, L., Hemmingsson, E., Andersson, G., Wallin, P., . . . Ekblom Bak, E. (2020). Active commuting in Swedish workers between 1998 and 2015 - trends, characteristics and cardiovascular disease risk.. Scandinavian Journal of Medicine and Science in Sports, 30(2)
Åpne denne publikasjonen i ny fane eller vindu >>Active commuting in Swedish workers between 1998 and 2015 - trends, characteristics and cardiovascular disease risk.
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2020 (engelsk)Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 30, nr 2Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND: Trend analyses of active commuting and potential variations in trends and association with cardiovascular disease (CVD) risk within sub-groups are unknown.

OBJECTIVES: To a) describe trends in active commuting between 1998 to 2015 and b) to study the association between different amounts of active commuting and the incidence risk of CVD in a large sample of Swedish workers, and analyses of potential variations across sub-groups of socio-demographics, physical activity and BMI.

METHODS: A total of 318,309 participants (47% women, 18-74 years) who participated in a nationwide occupational health service screening between 1998 and 2015 were included. Commuting habits were self-reported, and data on first-time CVD events were derived from national registers.

RESULTS: Self-reported passive commuters decreased between 1998 and 2015 (64% to 56%), transferring to an increase in mainly moderate/high-dose active commuters (12% to 19%). Changes were seen in all subgroups. The characteristics and life-style habits of the typical passive and active commuter changed little over the study period. Low- and moderate/high-dose active commuters had significantly decreased risks for a first time CVD during follow-up. This was accentuated in men, middle-aged and in participants with light physical work situations, irregular exercise habits, being overweight/obese and with low fitness.

CONCLUSION: Increases in active commuting were observed between 1998 and 2015, however still leaving a majority who do not actively commute. As active commuting, regardless dose, is associated with a lower CVD risk, encouraging more people to actively commute may provide an easily accessible and time-efficient possibility to increase physical activity and health in the general population.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2020
Emneord
active commuting, cardiovascular disease, cycling, physical activity, trends, walking, working population
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-5889 (URN)10.1111/sms.13581 (DOI)000499749900001 ()31631386 (PubMedID)
Prosjekter
HPI-gruppen
Tilgjengelig fra: 2019-10-28 Laget: 2019-10-28 Sist oppdatert: 2020-01-28bibliografisk kontrollert
Nilsson, J., Ekblom, Ö., Ekblom, M., Lebedev, A., Tarassova, O., Moberg, M. & Lövdén, M. (2020). Acute increases in brain-derived neurotrophic factor in plasma following physical exercise relates to subsequent learning in older adults.. Scientific Reports, 10(1), Article ID 4395.
Åpne denne publikasjonen i ny fane eller vindu >>Acute increases in brain-derived neurotrophic factor in plasma following physical exercise relates to subsequent learning in older adults.
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2020 (engelsk)Inngår i: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 10, nr 1, artikkel-id 4395Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Multidomain lifestyle interventions represents a promising strategy to counteract cognitive decline in older age. Brain-derived neurotrophic factor (BDNF) is essential for experience-dependent plasticity and increases following physical exercise, suggesting that physical exercise may facilitate subsequent learning. In a randomized-controlled trial, healthy older adults (65-75 years) completed a 12-week behavioral intervention that involved either physical exercise immediately before cognitive training (n = 25; 13 females), physical exercise immediately after cognitive training (n = 24; 11 females), physical exercise only (n = 27; 15 females), or cognitive training only (n = 21; 12 females). We hypothesized that cognition would benefit more from cognitive training when preceded as opposed to followed by physical exercise and that the relationship between exercise-induced increases in peripheral BDNF and cognitive training outcome would be greater when cognitive training is preceded by physical exercise. Greater increases of plasma BDNF were associated with greater cognitive training gains on trained task paradigms, but only when such increases preceded cognitive training (ß = 0.14, 95% CI [0.04, 0.25]). Average cognitive training outcome did not differ depending on intervention order (ß = 0.05, 95% CI [-0.10, 0.20]). The study provides the first empirical support for a time-critical but advantageous role for post-exercise increases in peripheral BDNF for learning at an interindividual level in older adults, with implications for future multidomain lifestyle interventions.

sted, utgiver, år, opplag, sider
Nature Publishing Group, 2020
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-6085 (URN)10.1038/s41598-020-60124-0 (DOI)32157099 (PubMedID)
Prosjekter
Träning för äldres hjärnhälsa
Tilgjengelig fra: 2020-03-16 Laget: 2020-03-16 Sist oppdatert: 2020-03-20
Drake, E., Ekblom, M., Ekblom, Ö., Kallings, L. & Blom, V. (2020). Cardiorespiratory Fitness and Device-Measured Sedentary Behaviour are Associated with Sickness Absence in Office Workers.. International Journal of Environmental Research and Public Health, 17(2), Article ID E628.
Åpne denne publikasjonen i ny fane eller vindu >>Cardiorespiratory Fitness and Device-Measured Sedentary Behaviour are Associated with Sickness Absence in Office Workers.
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2020 (engelsk)Inngår i: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 17, nr 2, artikkel-id E628Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Physical activity reduces the risk of several noncommunicable diseases, and a number of studies have found self-reported physical activity to be associated with sickness absence. The aim of this study was to examine if cardiorespiratory fitness, device-measured physical activity, and sedentary behaviour were associated with sickness absence among office workers. Participants were recruited from two Swedish companies. Data on sickness absence (frequency and duration) and covariates were collected via questionnaires. Physical activity pattern was assessed using ActiGraph and activPAL, and fitness was estimated from submaximal cycle ergometry. The sample consisted of 159 office workers (67% women, aged 43 ± 8 years). Higher cardiorespiratory fitness was significantly associated with a lower odds ratio (OR) for both sickness absence duration (OR = 0.92, 95% confidence interval (CI) 0.87-0.96) and frequency (OR = 0.93, 95% CI 0.90-0.97). Sedentary time was positively associated with higher odds of sickness absence frequency (OR = 1.03, 95% CI 0.99-1.08). No associations were found for physical activity at any intensity level and sickness absence. Higher sickness absence was found among office workers with low cardiorespiratory fitness and more daily time spent sedentary. In contrast to reports using self-reported physical activity, device-measured physical activity was not associated with sickness absence.

sted, utgiver, år, opplag, sider
MDPI, 2020
Emneord
cardiorespiratory fitness, office workers, physical activity, sedentary behaviour, sickness absence
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-6091 (URN)10.3390/ijerph17020628 (DOI)000516827400249 ()31963740 (PubMedID)
Tilgjengelig fra: 2020-03-20 Laget: 2020-03-20 Sist oppdatert: 2020-04-08
Väisänen, D., Ekblom, Ö., Ekblom Bak, E., Andersson, E., Nilsson, J. & Ekblom, M. (2020). Criterion validity of the Ekblom-Bak and the Åstrand submaximal test in an elderly population.. European Journal of Applied Physiology, 120(2), 307-316
Åpne denne publikasjonen i ny fane eller vindu >>Criterion validity of the Ekblom-Bak and the Åstrand submaximal test in an elderly population.
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2020 (engelsk)Inngår i: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 120, nr 2, s. 307-316Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

PURPOSE: The aim of this study was to validate the submaximal Ekblom-Bak test (EB-test) and the Åstrand test (Å-test) for an elderly population.

METHODS: Participants (n = 104), aged 65-75 years, completed a submaximal aerobic test on a cycle ergometer followed by an individually adjusted indirect calorimetry VO2max test on a treadmill. The HR from the submaximal test was used to estimate VO2max using both the EB-test and Å-test equations.

RESULTS: The correlation between measured and estimated VO2max using the EB method and Å method in women was r = 0.64 and r = 0.58, respectively and in men r = 0.44 and r = 0.44, respectively. In women, the mean difference between estimated and measured VO2max was - 0.02 L min-1 (95% CI - 0.08 to 0.04) for the EB method and - 0.12 L min-1 (95% CI - 0.22 to - 0.02) for the Å method. Corresponding values for men were 0.05 L min-1 (95% CI - 0.04 to 0.14) and - 0.28 L min-1 (95% CI - 0.42 to - 0.14), respectively. However, the EB method was found to overestimate VO2max in men with low fitness and the Å method was found to underestimate VO2max in both women and men. For women, the coefficient of variance was 11.1%, when using the EB method and 19.8% when using the Å method. Corresponding values for men were 11.6% and 18.9%, respectively.

CONCLUSION: The submaximal EB-test is valid for estimating VO2max in elderly women, but not in all elderly men. The Å-test is not valid for estimating VO2max in the elderly.

sted, utgiver, år, opplag, sider
Springer, 2020
Emneord
Cardiorespiratory fitness, Elderly, Oxygen uptake, Public health, Submaximal test, Validity
HSV kategori
Forskningsprogram
Medicin/Teknik; Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-5960 (URN)10.1007/s00421-019-04275-7 (DOI)000511955700001 ()31820103 (PubMedID)
Tilgjengelig fra: 2019-12-18 Laget: 2019-12-18 Sist oppdatert: 2020-03-20
Kuster, R. P., Grooten, W. J., Baumgartner, D., Blom, V., Hagströmer, M. & Ekblom, Ö. (2020). Detecting Prolonged Sitting Bouts with the ActiGraph GT3X.. Scandinavian Journal of Medicine and Science in Sports, 30(3), 572-582
Åpne denne publikasjonen i ny fane eller vindu >>Detecting Prolonged Sitting Bouts with the ActiGraph GT3X.
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2020 (engelsk)Inngår i: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 30, nr 3, s. 572-582Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The ActiGraph has a high ability to measure physical activity, however, it lacks an accurate posture classification to measure sedentary behaviour. The aim of the present study was to develop an ActiGraph (waist-worn, 30Hz) posture classification to detect prolonged sitting bouts, and to compare the classification to proprietary ActiGraph data. The activPAL, a highly valid posture classification device, served as reference criterion.1 Both sensors were worn by 38 office workers over a median duration of 9 days. An automated feature selection extracted the relevant signal information for a minute based posture classification. The machine-learning algorithm with optimal feature number to predict the time in prolonged sitting bouts (≥5 and ≥10 minutes) was searched and compared to the activPAL using Bland-Altman statistics. The comparison included optimised and frequently used cut-points (100 and 150 counts-per-minute (cpm), with and without low-frequency-extension (LFE) filtering). The new algorithm predicted the time in prolonged sitting bouts most accurate (bias ≤7 minutes/day). Of all proprietary ActiGraph methods, only 150 cpm without LFE predicted the time in prolonged sitting bouts non-significantly different from the activPAL (bias ≤18 minutes/day). However, the frequently used 100 cpm with LFE accurately predicted total sitting time (bias ≤7 minutes/day). To study the health effects of ActiGraph measured prolonged sitting, we recommend using the new algorithm. In case a cut-point is used, we recommend 150 cpm without LFE to measure prolonged sitting, and 100 cpm with LFE to measure total sitting time. However, both cpm cut-points are not recommended for a detailed bout analysis.

sted, utgiver, år, opplag, sider
Wiley-Blackwell, 2020
Emneord
Automated Feature Selection, Bout Analysis, Machine Learning, Posture Prediction, Sedentary Behaviour, activPAL
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-5934 (URN)10.1111/sms.13601 (DOI)000503822900001 ()31743494 (PubMedID)
Tilgjengelig fra: 2019-12-02 Laget: 2019-12-02 Sist oppdatert: 2020-02-24bibliografisk kontrollert
Fröberg, A., Lindroos, A.-K., Ekblom, Ö. & Nyberg, G. (2020). Organised physical activity during leisure time is associated with more objectively measured physical activity among Swedish adolescents.. Acta Paediatrica
Åpne denne publikasjonen i ny fane eller vindu >>Organised physical activity during leisure time is associated with more objectively measured physical activity among Swedish adolescents.
2020 (engelsk)Inngår i: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227Artikkel i tidsskrift (Fagfellevurdert) Epub ahead of print
Abstract [en]

AIM: The aim of this study was to investigate associations between participation in organised physical activity (PA), such as sport and exercise during leisure time, and objectively measured PA and sedentary time in a large representative sample of Swedish adolescents.

METHODS: This study was part of the school-based cross-sectional Swedish national dietary survey Riksmaten Adolescents 2016-17. Data from 3477 adolescents aged 11-12, 14-15 and 17-18 years were used in the analyses. Participation in organised PA and parental education were reported in questionnaires. PA and sedentary time were objectively measured through accelerometry during seven consecutive days.

RESULTS: Adolescents who participated in organised PA had significantly higher total PA (14%, p<0.001), more time spent on moderate-to-vigorous PA (MVPA) (eight minutes, p<0.001) and had less sedentary time (15 minutes, p<0.001). Those who participated in organised PA were more likely to reach recommended PA levels. Total PA and MVPA did not differ by parental education among those who participated in organised PA.

CONCLUSION: Adolescents who participated in organised PA were more physically active, less sedentary and more likely to reach PA recommendations than those who did not.

sted, utgiver, år, opplag, sider
Wiley-Blackwell, 2020
Emneord
Adolescent health, Exercise, Physical activity, Sedentary behaviour, Socioeconomic, Sports
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-6012 (URN)10.1111/apa.15187 (DOI)000512744700001 ()31977109 (PubMedID)
Tilgjengelig fra: 2020-01-29 Laget: 2020-01-29 Sist oppdatert: 2020-03-16
Godhe, M., Helge, T., Mattsson, C. M., Ekblom, Ö. & Ekblom, B. (2020). Physiological Factors of Importance for Load Carriage in Experienced and Inexperienced Men and Women.. Military medicine, Article ID usaa050.
Åpne denne publikasjonen i ny fane eller vindu >>Physiological Factors of Importance for Load Carriage in Experienced and Inexperienced Men and Women.
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2020 (engelsk)Inngår i: Military medicine, ISSN 0026-4075, E-ISSN 1930-613X, artikkel-id usaa050Artikkel i tidsskrift (Fagfellevurdert) Epub ahead of print
Abstract [en]

INTRODUCTION: The ability to carry heavy loads is an important and necessary task during numerous outdoor activities and especially in military operations. The aim of this study was to investigate factors associated with load-carrying ability in men and women with and without extensive load-carrying experience.

MATERIALS AND METHODS: The energy expenditure during carrying no load, 20, 35, and 50 kg at 2 walking speeds, 3 and 5 km h-1, was studied in 36 healthy participants, 19 men (30 ± 6 years, 82.5 ± 7.0 kg) and 17 women (29 ± 6 years, 66.1 ± 8.9 kg), experienced (>5 years) in carrying heavy loads (n = 16, 8 women) or with minor or no such experience (n = 20, 9 women). A standard backpack filled with weights to according carry load was used during the walks. Anthropometric data, leg muscle strength, as well as trunk muscle endurance and muscle fiber distribution of the thigh, were also obtained. Extra Load Index (ELI)-the oxygen uptake (VO2) during total load over unloaded walking-was used as a proxy for load-carrying ability at 20, 35, and 50 kg (ELI20, ELI35, and ELI50, respectively). In addition to analyzing factors of importance for the ELI values, we also conducted mediator analyses using sex and long-term carrying experience as causal variables for ELI as the outcome value. The study was approved by the Regional Ethics Committee in Stockholm, Sweden.

RESULTS: For the lowest load (20 kg), ELI20, was correlated with body mass but no other factors. Walking with 35 and 50 kg load at 5 km h-1 body mass, body height, leg muscle strength, and absolute VO2max were correlated, while relative VO2max, trunk muscle endurance, and leg muscle fiber distribution were not correlated to ELI35 and ELI50.ELI50 at 5 km h-1 differed between the sexes. This difference was only mediated by the difference in body mass. Neither muscle fiber distribution, leg muscle strength, trunk muscle endurance, and body height nor did absolute or relative VO2max explain the difference.Participants with long-term experience of heavy load carrying had significant lower ELI20 and ELI50 values than those with minor or no experience, but none of the above studied factors could explain this difference.

CONCLUSION: The study showed that body mass, without sex differences, and experience of carrying heavy loads are the dominant factors for the ability to carry heavy loads. Even though the effect of experience alludes to the need for extensive carrying training, no causality can be proven. Load carry training intervention studies is suggested for future investigations.

sted, utgiver, år, opplag, sider
Oxford University Press, 2020
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-6148 (URN)10.1093/milmed/usaa050 (DOI)32248224 (PubMedID)
Tilgjengelig fra: 2020-04-08 Laget: 2020-04-08 Sist oppdatert: 2020-04-08bibliografisk kontrollert
Ekblom, Ö. (2020). Placebo "exercise drink" study provides a welcome wake-up call about the importance of rigorous research.. Acta Paediatrica, 109(2), 226-227
Åpne denne publikasjonen i ny fane eller vindu >>Placebo "exercise drink" study provides a welcome wake-up call about the importance of rigorous research.
2020 (engelsk)Inngår i: Acta Paediatrica, ISSN 0803-5253, E-ISSN 1651-2227, Vol. 109, nr 2, s. 226-227Artikkel i tidsskrift, Editorial material (Annet vitenskapelig) Published
sted, utgiver, år, opplag, sider
John Wiley & Sons, 2020
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-5890 (URN)10.1111/apa.15009 (DOI)31577038 (PubMedID)
Tilgjengelig fra: 2019-10-29 Laget: 2019-10-29 Sist oppdatert: 2020-01-16bibliografisk kontrollert
Blom, V., Kallings, L., Ekblom, B., Wallin, P., Andersson, G., Hemmingsson, E., . . . Ekblom Bak, E. (2020). Self-Reported General Health, Overall and Work-Related Stress, Loneliness, and Sleeping Problems in 335,625 Swedish Adults from 2000 to 2016.. International Journal of Environmental Research and Public Health, 17(2), Article ID E511.
Åpne denne publikasjonen i ny fane eller vindu >>Self-Reported General Health, Overall and Work-Related Stress, Loneliness, and Sleeping Problems in 335,625 Swedish Adults from 2000 to 2016.
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2020 (engelsk)Inngår i: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 17, nr 2, artikkel-id E511Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The prevalence of poor health, in particular stress-related mental ill-health, is increasing over time and birth cohorts. As rapid societal changes have occurred in the last decade and still are occurring, there is an interest in investigating the trends in health-related factors. The aim of the present study was to investigate trends in self-reported general health, overall stress, work-related stress, feelings of loneliness, and sleeping problems in 335,625 Swedish adults across categories of gender, geographic regions, length of education, and age from 2000 to 2016. On population level, sleeping problems and poor general health have increased markedly and significantly, while experiences of work stress decreased between 2000 and 2016 (p < 0.05). Overall stress and level of loneliness were unchanged (p > 0.05). The risk of having ≥3 symptoms (any of poor or very poor general health, often or very often perceived overall stress, loneliness, or sleeping problems) has increased significantly from 2000 to 2016 (ß = 1034 (1027-1040)). This increase was significantly higher in young (ß = 1052 (1038-1065)) and individuals with lower education (ß = 1056 (1037-1076)) compared to older and high length of education.

sted, utgiver, år, opplag, sider
MDPI, 2020
Emneord
loneliness, public health, self-reported health, sleeping problems, stress, working population
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-6007 (URN)10.3390/ijerph17020511 (DOI)000516827400132 ()31947519 (PubMedID)
Prosjekter
HPI-gruppen
Tilgjengelig fra: 2020-01-28 Laget: 2020-01-28 Sist oppdatert: 2020-04-08
Fridolfsson, J., Börjesson, M., Ekblom Bak, E., Ekblom, Ö. & Arvidsson, D. (2020). Stronger Association between High Intensity Physical Activity and Cardiometabolic Health with Improved Assessment of the Full Intensity Range Using Accelerometry.. Sensors, 20(4), Article ID E1118.
Åpne denne publikasjonen i ny fane eller vindu >>Stronger Association between High Intensity Physical Activity and Cardiometabolic Health with Improved Assessment of the Full Intensity Range Using Accelerometry.
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2020 (engelsk)Inngår i: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 20, nr 4, artikkel-id E1118Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

An improved method of physical activity accelerometer data processing, involving a wider frequency filter than the most commonly used ActiGraph filter, has been shown to better capture variations in physical activity intensity in a lab setting. The aim of the study was to investigate how this improved measure of physical activity affected the relationship with markers of cardiometabolic health. Accelerometer data and markers of cardiometabolic health from 725 adults from two samples, LIV 2013 and SCAPIS pilot, were analyzed. The accelerometer data was processed using both the original ActiGraph method with a low-pass cut-off at 1.6 Hz and the improved method with a low-pass cut-off at 10 Hz. The relationship between the physical activity intensity spectrum and a cardiometabolic health composite score was investigated using partial least squares regression. The strongest association between physical activity and cardiometabolic health was shifted towards higher intensities with the 10 Hz output compared to the ActiGraph method. In addition, the total explained variance was higher with the improved method. The 10 Hz output enables correctly measuring and interpreting high intensity physical activity and shows that physical activity at this intensity is stronger related to cardiometabolic health compared to the most commonly used ActiGraph method.

sted, utgiver, år, opplag, sider
MDPI, 2020
Emneord
ActiGraph, LIV, SCAPIS, cardiovascular disease, frequency filtering, multivariate analysis, partial least squares regression, vigorous physical activity
HSV kategori
Forskningsprogram
Medicin/Teknik
Identifikatorer
urn:nbn:se:gih:diva-6078 (URN)10.3390/s20041118 (DOI)32085652 (PubMedID)
Prosjekter
Mätning av det dagliga aktivitetsmönstret
Tilgjengelig fra: 2020-03-16 Laget: 2020-03-16 Sist oppdatert: 2020-03-16
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0001-6058-4982