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Salier Eriksson, JaneORCID iD iconorcid.org/0000-0001-5213-4439
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Publications (10 of 25) Show all publications
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)
Open this publication in new window or tab >>Active commuting in Swedish workers between 1998 and 2015 - trends, characteristics and cardiovascular disease risk.
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2020 (English)In: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 30, no 2Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
John Wiley & Sons, 2020
Keywords
active commuting, cardiovascular disease, cycling, physical activity, trends, walking, working population
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5889 (URN)10.1111/sms.13581 (DOI)000499749900001 ()31631386 (PubMedID)
Projects
HPI-gruppen
Available from: 2019-10-28 Created: 2019-10-28 Last updated: 2020-01-28Bibliographically approved
Olsson, K., Salier Eriksson, J., Rosdahl, H. & Schantz, P. (2020). Is the heart rate method based on ergometer cycling applicable on level walking?. PLoS ONE
Open this publication in new window or tab >>Is the heart rate method based on ergometer cycling applicable on level walking?
2020 (English)In: PLoS ONE, E-ISSN 1932-6203Article in journal (Refereed) Submitted
Keywords
heart rate method; heart rate; oxygen uptake; walking; cycling; ergometer cycle
National Category
Medical and Health Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-6075 (URN)
Projects
FAAP
Available from: 2020-03-16 Created: 2020-03-16 Last updated: 2020-03-16Bibliographically approved
Schantz, P., Salier Eriksson, J. & Rosdahl, H. (2020). Perspectives on exercise physiology and behaviours of commuter cycling in relation to health outcomes.
Open this publication in new window or tab >>Perspectives on exercise physiology and behaviours of commuter cycling in relation to health outcomes
2020 (English)In: Article in journal (Refereed) Submitted
Abstract [en]

Background. Knowledge about physiology of cycle commuting combined with trip frequency and durations is necessary for understanding its character and potential influencing capacity. It needs to be investigated with validated methods. This is the first purpose of the study. On basis of the outcomes, the second purpose is to illuminate conceivable effects on health related outcomes.

 

Methods. Ten male and ten female habitual commuter cyclists in their middle ages were studied at rest and with maximal exercise tests on a cycle ergometer and a treadmill in the laboratory. During their normal commute in the Stockholm County, Sweden, their oxygen uptake, heart rate, energy expenditure, ventilation, blood lactate, rated perceived exertion, number of stops, durations, route distances and cycling velocities were monitored with validated methods. The frequency of trips was self-reported.

 

Results. The relative exercise intensity was 65 % of maximal oxygen uptake, and the energy consumption was 0.46 kcal per km and kg body weight for both sexes. Sex differences in MET-values (males, 8.7; females 7.4) mirrored higher levels of cycling speed (20 %), body weight (29 %), oxygen uptake (54 %) and ventilation (51 %) in males compared to females. The number of METhours per week during peak cycling season averaged 40 for the males and 28 for the females. It corresponded to a total energy expenditure of about 3500 and 1880 kcal for males and females, respectively. The  number of trips per year was about 370, and the annual distance cycled was on the average 3500 km for males and 2300 for females.

 

Conclusion. Cycle commuting is characterized by equal relative aerobic intensity levels and energy requirements for a given distance cycled for males and females. Based on an overall evaluation, it represents a lower range within the vigorous intensity category. The combined levels of oxygen uptake, durations and trip frequencies leads to high levels of METhours and energy expenditure in both males and females during both peak cycling season as well as over the year. Overall the study presents a novel basis for interpreting cycle commuting in relation to various health outcomes.

Keywords
commuter cycling, exercise intensities, maximal oxygen uptake, heart rate, ventilation, energy consumption, metabolic equivalent of task, blood lactate
National Category
Medical and Health Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5977 (URN)
Projects
FAAP
Available from: 2020-01-07 Created: 2020-01-07 Last updated: 2020-01-07Bibliographically approved
Schantz, P., Salier Eriksson, J. & Rosdahl, H. (2020). The physical work during cycling needs to be measured more accurately in studies of health effects: An explorative methodological study. In: Konferensrapporten Transportforum 2020: . Paper presented at Transportforum 2020, 8-9 januari. Väg- och Transportforskningsinstitutet,(VTI), Linköping.
Open this publication in new window or tab >>The physical work during cycling needs to be measured more accurately in studies of health effects: An explorative methodological study
2020 (English)In: Konferensrapporten Transportforum 2020, 2020Conference paper, Oral presentation with published abstract (Other academic)
Keywords
cycling, health, cots-benefit analyses, energy turnover, body weight, sex, route distance
National Category
Medical and Health Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5871 (URN)
Conference
Transportforum 2020, 8-9 januari. Väg- och Transportforskningsinstitutet,(VTI), Linköping
Projects
FAAP
Funder
Swedish Transport Administration, TRV:2017/63917-6522Stockholm County Council, L0401-0158
Available from: 2019-10-17 Created: 2019-10-17 Last updated: 2020-01-13Bibliographically approved
Salier Eriksson, J., Ekblom Bak, E., Blom, V., Kallings, L., Ekblom, Ö., Hemmingsson, E., . . . Lindwall, M. (2019). Latent profiles of sedentary time, exercise and cardiorespiratory fitness in adults, and the associations with metabolic and percieved health. In: : . Paper presented at EuroPrevent 2019. 11-13 April 2019, Lisbon, Portugal.
Open this publication in new window or tab >>Latent profiles of sedentary time, exercise and cardiorespiratory fitness in adults, and the associations with metabolic and percieved health
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2019 (English)Conference paper, Poster (with or without abstract) (Other academic)
National Category
Health Sciences
Research subject
Medicine/Technology; Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-6000 (URN)
Conference
EuroPrevent 2019. 11-13 April 2019, Lisbon, Portugal
Available from: 2020-01-21 Created: 2020-01-21 Last updated: 2020-01-21Bibliographically approved
Schantz, P., Salier Eriksson, J. & Rosdahl, H. (2019). The Heart Rate Method for Estimating Oxygen Uptake: Analyses of Reproducibility Using a Range of Heart Rates from Cycle Commuting. PLoS ONE, 14(7), Article ID e0219741.
Open this publication in new window or tab >>The Heart Rate Method for Estimating Oxygen Uptake: Analyses of Reproducibility Using a Range of Heart Rates from Cycle Commuting
2019 (English)In: PLoS ONE, E-ISSN 1932-6203, Vol. 14, no 7, article id e0219741Article in journal (Refereed) Published
Abstract [en]

Background. Monitoring aerobic exercise intensities of free-living physical activities is valuable for purposes such as education and research. The heart rate (HR) method, based on the linear relation between HR and oxygen uptake (VO2), is potentially valuable for this purpose. Three prerequisites are that the method is reproducible, and valid for the specific form of physical activity executed as well as under field conditions. The aim of this study is to evaluate reproducibility of the heart rate method in the laboratory.

 

Methods. VO2 and HR measurements were made on two different occasions during three submaximal (model 1) plus a maximal exercise intensity (model 2) on a cycle ergometer in the laboratory. 19 habitual commuter cyclists (9 males and 10 females), aged 44 ± 3 years, were measured. The reproducibility of the estimated VO2, based on three levels of HR from commuting cycling and the regression equations from test and retest were analyzed. Differences between the two models were also studied. 

 

Results. For both models, there were no significant differences between test and retest in the constituents of the regression equations (y-intercept, slope and r-value). Neither were there any systematic differences in estimated absolute levels of VO2 between test and retest. The relative differences between test and retest, based on estimations from three different levels of HR, were 0.99 ± 11.0 (n.s.), 2.67 ± 6.48 (n.s.) and 3.57 ± 6.24% (p<0.05) for model 1, and 1.09 ± 10.6, 1.75 ± 6.43 and 2.12 ± 5.92% (all n.s.) for model 2. However, some large individual differences were seen in both models. There were no significant differences between the two models in the slopes, intercepts or r-values of the regression equations or in the estimated levels of VO2.

 

Conclusion. The heart rate method shows good reproducibility on the group level in estimating oxygen consumption from HR-VO2 relations in the laboratory, and based on three levels of HR which are representative for cycle commuting. However, on the individual level, some large variations were seen.

Place, publisher, year, edition, pages
Public Library of Science (PLoS), 2019
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5401 (URN)10.1371/journal.pone.0219741 (DOI)000482335700033 ()31339909 (PubMedID)
Projects
FAAP
Funder
Swedish Transport Administration, 2017/63917-6522Stockholm County Council, LS0401-0158
Available from: 2018-09-03 Created: 2018-09-03 Last updated: 2020-01-13Bibliographically approved
Schantz, P., Salier Eriksson, J. & Rosdahl, H. (2019). The heart rate method for estimating oxygen uptake: analyses of reproducibility using a range of heart rates from commuter walking. European Journal of Applied Physiology, 119(11-12), 2655-2671
Open this publication in new window or tab >>The heart rate method for estimating oxygen uptake: analyses of reproducibility using a range of heart rates from commuter walking
2019 (English)In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 119, no 11-12, p. 2655-2671Article in journal (Refereed) Published
Abstract [en]

Background. The heart rate method, based on the linear relation between heart rate and oxygen uptake, is potentially valuable to monitor intensity levels of physical activities. However, this depends not least on its reproducibility under standard conditions. This study aims therefore to evaluate the reproducibility of the heart rate method in the laboratory using a range of heart rates associated with walking commuting.

 

Methods. On two different days, heart rate and oxygen uptake measurements were made during three submaximal (model 1) and a maximal exercise intensity (model 2) on a cycle ergometer in the laboratory. 14 habitual walking commuters participated. The reproducibility, based on the regression equations from test and retest and using three levels of heart rate from the walking commuting was analyzed. Differences between the two models were also analyzed. 

 

Results. For both models, there were no significant differences between test and retest in the constituents of the regression equations (y-intercept, slope and r-value). Neither were there any systematic differences in estimated absolute levels of VO2 between test and retest for either model. However, some rather large individual differences were seen in both models. Furthermore, no significant differences were seen between the two models in slopes, intercepts and r-values of the regression equations or in the estimated VO2.

 

Conclusion. The heart rate method shows good reproducibility on the group level in estimating oxygen consumption from heart rate – oxygen uptake relations in the laboratory, and based on three levels of heart rate which are representative for walking commuting. However, on the individual level, some large variations were seen.

Place, publisher, year, edition, pages
Springer, 2019
Keywords
walking commuting, pedestrians, heart rate, oxygen uptake, heart rate-oxygen uptake relation, metabolic measurements, rated perceived exertion, reproducibility
National Category
Physiology
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5849 (URN)10.1007/s00421-019-04236-0 (DOI)000491401900001 ()
Projects
FAAP
Funder
Swedish Transport Administration, TRV:2017/63917-6522Stockholm County Council, LS0401-0158
Available from: 2019-09-20 Created: 2019-09-20 Last updated: 2019-12-19Bibliographically approved
Schantz, P., Salier Eriksson, J. & Rosdahl, H. (2018). An Overview, Description and Synthesis of Methodological Issues in Studying Oxygen Consumption during Walking and Cycling Commuting using a Portable Metabolic System (Oxycon Mobile). (1ed.).
Open this publication in new window or tab >>An Overview, Description and Synthesis of Methodological Issues in Studying Oxygen Consumption during Walking and Cycling Commuting using a Portable Metabolic System (Oxycon Mobile).
2018 (English)Other (Other academic)
Abstract [en]

From the time of the independent discoveries of oxygen by Carl Wilhelm Scheele in Sweden and Joseph Priestly in England in the 1770s, there has been an ongoing chain of methodological developments, from the pioneering ones by Antoine Lavoisier until today, with the aim of measuring oxygen uptake and metabolic processes of man in motion (Mitchell and Saltin 2003). This historical development, has, not least during the last decades, also included both automated stationary and portable open-circuit metabolic measurement systems, which have been thoroughly reviewed recently (Macfarlane 2017; Ward 2018; Taylor et al. 2018).  

When two of the present authors (PS and HR) were trained as exercise physiologists, the golden standard method in this respect, the Douglas bag method (DBM), was the only, or the predominantly used method at our laboratory. In the 1990s, automated stationary open-circuit metabolic measurement systems started to be used, and HR evaluated some of them using DBM. He noted that it was not apparent that one could rely on the data produced in these “black box” systems. Still they have been used in many laboratories, and possibly there are a number of scientific articles based on them which might hold invalid data. One comment along that line was sent in 2001 as an e-mail from our teacher, professor emeritus Per-Olof Åstrand to an American colleague (Appendix 1). It ended with: “I have observed many odd data in the literature which can be explained as a consequence of uncritical use of modern, fancy electronic equipments without serious and competent evaluation of their accuracy”.

For HR, these kind of experiences during the 1990s became an important impetus to develop a refined system for the Douglas bag method at the Laboratory for Applied Sport Sciences at the Swedish School for Sport and Health Sciences, GIH, in Stockholm, Sweden. That process was undertaken in close collaboration with Lennart Gullstrand at the Elite Sports Centre, The Swedish Sports Confederation, Bosön, Lidingö, Sweden. This text builds on that system, and many other developmental steps that have been taken since then. They have been applied to study a number of issues related to walking and cycle commuting, as part of the multidisciplinary research project on Physically Active Commuting in Greater Stockholm (PACS) at GIH. For its overall aims, see: www.gih.se/pacs

One of the aims is to characterize the physiological demands of walking and cycle commuting in relation to absolute and relative demands of oxygen uptake (VO2). This is of interest in itself for understanding the nature of the physical activity during active commuting. Combined with other kinds of data one aim was also to better understand the potential health effects of active commuting. An important issue in this respect was to scrutinize whether the heart rate method for estimating VO2 (Berggren & Hohwü Christensen 1950) would be a reliable and valid method during cycle or walking commuting.

To reach these goals we needed to use an automated mobile metabolic system. However, we had to work for a much longer time than expected due to a surprising number of diverse methodological challenges in measurements of both VO2 and heart rate (HR). They had to be considered and evaluated through a series of validity studies and checks. Some of the issues could be foreseen and were rather straight forward to handle, whereas others were unexpected, and the strategies to handle them had to be developed step by step as they appeared during the research process. Here this process will be first introduced, then described in more or less detail, and in cases of less details, we instead refer to issues in more depth in original articles. Finally, a synthesis of all studies and their consequences is elaborated on at the end of this appendix.

Keywords
oxygen uptake, Douglas bag method, portable metabolic systems, stationary metabolic system, walking commuting, cycle commuting
National Category
Medical and Health Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5413 (URN)
Projects
FAAP
Note

Appendix in: Jane Salier Eriksson (2018). The heart rate method for estimating oxygen uptake in walking and cycle commuting: Evalutations based on reproducibility and validity studies of the heart rate method and a portable metabolic system. Doctoral thesis.

Available from: 2018-09-09 Created: 2018-09-09 Last updated: 2018-11-26Bibliographically approved
Schantz, P., Wahlgren, L., Salier Eriksson, J., Nilsson Sommar, J. & Rosdahl, H. (2018). Estimating duration-distance relations in cycle commuting in the general population. PLoS ONE, 13(11), Article ID e0207573.
Open this publication in new window or tab >>Estimating duration-distance relations in cycle commuting in the general population
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2018 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 13, no 11, article id e0207573Article in journal (Refereed) Published
Abstract [en]

It is important to estimate the duration-distance relation in cycle commuting in the general  population since this enables analyses of the potential for various public health outcomes. Therefore, the aim is to estimate this relation in the Swedish adult population of 2015. For that purpose, the first step was to establish it for adult male and female cycle commuters in Greater Stockholm, Sweden. Whether or not the slopes of these relations needed to be altered in order to make them representative of the general population was evaluated by comparing the levels of maximal oxygen uptake in samples of commuter cyclists and the population. The measure used was the maximal oxygen uptake divided by both the body weight and a cycle weight of 18.5 kg. The body weights in the population samples were adjusted to mirror relevant levels in 2015. Age adjustments for the duration–distance relations were calculated on the basis of the maximal oxygen uptake in the population samples aged 20–65 years. The duration-distance relations of the cycle commuters were downscaled by about 24–28% to mirror levels in the general population. The empirical formula for the distance (D, km) was based on duration (T, minutes)  x  speed (km/min)  x  a correction factor from cycle commuter to the general population  x  age adjustment (A, years). For the males in the general population the formula was: D = T  x  20.76 km/h  x  0.719  x  (1.676 – 0.0147  x  A). For females, the  formula was: D = T  x  16.14 km/h  x  0.763  x  (1.604 – 0.0129  x  A). These formulas, combined with distributions of route distances between home and work in the population, enable realistic evaluations of the potential for different public health outcomes through cycle commuting.

Place, publisher, year, edition, pages
Public Library of Science (PLoS), 2018
Keywords
cycling, duration, distance, velocity, population, commuters, maximal oxygen uptake, body weight
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5462 (URN)10.1371/journal.pone.0207573 (DOI)000450420900042 ()30444927 (PubMedID)
Projects
FAAP
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2012-1296Swedish Transport Administration, 2017/63917-6522
Note

Correction added June 5, 2019

Available from: 2018-10-31 Created: 2018-10-31 Last updated: 2019-08-13Bibliographically approved
Salier Eriksson, J. (2018). Hjärtfrekvensmetod för beräkning av syreupptagning under gång- och cykelpendling: ny avhandling. Idrottsmedicin, 7(4), 29-31
Open this publication in new window or tab >>Hjärtfrekvensmetod för beräkning av syreupptagning under gång- och cykelpendling: ny avhandling
2018 (Swedish)In: Idrottsmedicin, ISSN 1103-7652, Vol. 7, no 4, p. 29-31Article in journal (Other (popular science, discussion, etc.)) Published
Place, publisher, year, edition, pages
Svensk förening för fysisk aktivitet och idrottsmedicin, 2018
National Category
Sport and Fitness Sciences
Research subject
Medicine/Technology
Identifiers
urn:nbn:se:gih:diva-5481 (URN)
Note

Sammanfattning av Jane Salier Erikssons avhandling.

Available from: 2018-11-29 Created: 2018-11-29 Last updated: 2018-12-07Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-5213-4439

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