| 1. |
- Dencker, Magnus, et al.
(författare)
-
Cystatin B, cathepsin L and D related to surrogate markers for cardiovascular disease in children
- 2017
-
Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 12:11
-
Tidskriftsartikel (refereegranskat)abstract
- Objective: This study investigated potential associations between novel biomarkers for cardiovascular disease and other surrogate markers for health. Methods: Community sample of 170 (92 boys and 78 girls) children aged 8–11 years. Total fat mass (TBF) and abdominal fat (AFM) were measured by Dual-energy x-ray absorptiometry (DXA). Total body fat was also expressed as percentage of total body mass (BF%), and body fat distribution was calculated as AFM/TBF. Maximal oxygen uptake (VO2PEAK), systolic and diastolic blood pressure (SBP and DBP) and pulse pressure (PP) were measured. Echocardiography was performed. Left atrial size (LA) and left ventricular mass (LVM) were measured. A follow-up DXA scan was available in 152 children (84 boys and 68 girls). Frozen serum samples were analyzed for cystatin B, cathepsin L and cathepsin D. Results: Partial correlations between cystatin B versus lnTBF, lnBF%, lnAFM, AFM/TBF, VO2PEAK and PP were; r = 0.38, 0.36, 0.38, 0.29, -0.25 and 0.25, P = 0.001 or less for all. Weaker predominantly non-significant correlations were found for cathepsin L, whereas cathepsin D was not related to any surrogate markers for health. No significant correlations were found between biomarkers and change in body fat over 2 years. Conclusion: Findings from this community-based cohort of young children show that surrogate markers for cardiovascular disease such as total fat mass, percent body fat, abdominal fat, body fat distribution, maximal oxygen uptake and pulse pressure were all associated with cystatin B. This was not found for cathepsin L or cathepsin D.
|
|
| 2. |
- Dencker, Magnus, et al.
(författare)
-
Tracking of Physical Activity with Accelerometers Over a Two-year Time Period.
- 2013
-
Ingår i: Journal of Physical Activity & Health. - 1543-5474. ; 10:2, s. 241-248
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Limited data exists of tracking and changes in accelerometer measured physical activity in children. METHODS: Physical activity was assessed by accelerometers for four days in 167 children (boys n=90, girls n=77), aged 9.8±0.6 years. Follow-up measurement was made 2.0±0.1 yrs later (range 1.9-2.1 yrs). General physical activity (GPA) was defined as mean count/minute. Minutes of inactivity, light- moderate- and vigorous physical activity (LMVPA), moderate and vigorous physical activity (MVPA) and vigorous physical activity (VPA) per day were calculated both as absolute values and as percentage of total registration time. RESULTS: Spearman rank order correlation indicated low tracking of MVPA and VPA in girls (r=0.25-0.33, P<0.05), and low-moderate tracking of GPA, inactivity, LMVPA, MVPA and VPA in boys (r=0.23-0.40, P<0.05). Time in inactivity increased at follow-up by 5-14%. Most of the assessed physical activity variables were decreased at follow-up by 6-30%. CONCLUSIONS: Physical activity tracks at a low-moderate degree from age 10 to age 12 years, which confirm previous investigations that have used self-report assessments. The low-moderate tracking of physical activity variables indicate that those who were most active initially remained most active. Increasing inactive behaviour was observed and that several other physical activity variables were decreased at follow-up.
|
|
| 3. |
|
|
| 4. |
- Gonzalez, Manuel, et al.
(författare)
-
Effect of a lifestyle-focused electronic patient support application for improving risk factor management, self-rated health, and prognosis in post-myocardial infarction patients : study protocol for a multi-center randomized controlled trial
- 2019
-
Ingår i: Trials. - : Springer Science and Business Media LLC. - 1745-6215. ; 20:1
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Cardiac rehabilitation (CR) programs addressing risk factor management, educational interventions, and exercise contribute to reduce mortality after myocardial infarction (MI). However, the fulfillment of guideline-recommended CR targets is currently unsatisfactory. eHealth, i.e., the use of electronic communication for healthcare, including the use of mobile smartphone applications combined with different sensors and interactive computerized programs, offers a new array of possibilities to provide clinical care. The present study aims to assess the efficacy of a web-based application (app) designed to support persons in adhering to lifestyle advice and medication as a complement to traditional CR programs for improvement of risk factors and clinical outcomes in patients with MI compared with usual care. METHODS/DESIGN: An open-label multi-center randomized controlled trial is being conducted at different CR centers from three Swedish University Hospitals. The aim is to include 150 patients with MI < 75 years of age who are confident smartphone and/or Internet users. In addition to participation in CR programs according to the usual routine at each center, patients randomized to the intervention arm will receive access to the web-based app. A CR nurse reviews the patients' self-reported data twice weekly through a medical interface at the clinic. The primary outcome of the study will be change in submaximal exercise capacity (in watts) between 2 and 4 weeks after discharge and when the patient has completed his/her exercise program at the CR center, usually around 3-6 months post-discharge. Secondary outcomes include changes in self-reported physical activity, objectively assessed physical activity by accelerometry, self-rated health, dietary, and smoking habits, body mass index, blood pressure, blood lipids, and glucose/HbA1c levels between inclusion and follow-up visits during the first year post-MI. Additionally, we will assess uptake and adherence to the application, the number of CR staff contacts, and the incidence of cardiovascular events at 1 and 3 years after the MI. Patient recruitment started in 2016, and the first study results are expected in the beginning of 2019. DISCUSSION: The present study will add evidence to whether electronic communication can be used to improve traditional CR programs for patients after MI. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03260582 . Retrospectively registered on 24 August 2017.
|
|
| 5. |
- Tanha, Tina
(författare)
-
Accelerometer measured physical activity, methodological and health related aspects
- 2014
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Introduction Ihe association of physical inactivity with mortality, cardiovascular disease and cancer is extensively studied in adults. Clustering of cardiovascular risk factors and objectively measured physical activity in children and youth has not been convincingly established. The sustainability of objectively measured physical activity into adulihood is not satisfactorily studied. Accelerometers are suitable for assessment of physical activity. However, due to constantly newer accelerometer-models on the market, studies should be performed to guarantee their interchangeability. Aims I. ls accelerometer measured physical activity correlated to a composite cardiovascular risk factor score in children? II. Are physical activity, aerobic fitness and body fat associated with autonomic function in children? III. Does physical activity track in children over a 2 year time period? IV. Is the new generation Actigraph accelerometer (GTIM) comparable to the old generation Actigraph accelerometer (7164) in laboratory settings? V. Does time spent in physical activity differ between Actigraph GTlM and 7164 in freeliving settings? Methods Parameters measured: aerobic fitness (VO2PEAK), body fat (by dual X-ray absolptiometry), heart rate, blood pressure, physical activity (accelerometers), head-up tilt test and deep breath test. Results and Conclusions I. Physical activity was correlated to a composite cardiovascular risk factor score. II. Low-moderate tracking of all physical activity levels was observed in 9-12 year otd children. III. Physical activity and body fat were not significantly associated with autonomic function. Aerobic fitness was correlated to autonomic function in boys. IV. Accelerometer GTIM showed lower counts compared to 7164 in laboratory settings. V. Time spent in physical activity was lower from accelerometer GTIM compared to 7164 in free-living settings.
|
|
| 6. |
- Tanha, Tina, et al.
(författare)
-
Correlation between physical activity, aerobic fitness and body fat against autonomic function profile in children
- 2016
-
Ingår i: Clinical Autonomic Research. - : Springer Science and Business Media LLC. - 1619-1560 .- 0959-9851. ; 26:3, s. 197-203
-
Tidskriftsartikel (refereegranskat)abstract
- AIM: To evaluate correlations between physical activity, VO2PEAK and body fat versus autonomic function in children.METHODS: Children (n = 98) between 10 and 12 years underwent a maximal exercise test (VO2PEAK) and dual-energy X-ray absorptiometry measured body fat. General physical activity, moderate to vigorous physical activity and vigorous physical activity were assessed by accelerometers. Deep breath test with E/I-ratio calculation and a head-up tilt test were performed. The sum of z-scores represented an index score for autonomic function profile and included E/I-ratio plus difference in blood pressure and heart rate between supine and tilted position. Correlation analyses were performed between physical activity parameters, body fat and VO2PEAK versus autonomic function profile.RESULTS: No significant correlations were found between autonomic function profile and physical activity or body fat (p > 0.05). VO2PEAK was correlated with autonomic function profile in boys (r = 0.30, p < 0.05), but not in girls (r = 0.04, NS). One girl and eight boys terminated head-up tilt test prematurely due to intolerance. Minutes of vigorous physical activity per day was lower in these boys compared with those (n = 48) who completed the head-up tilt test (5.1 ± 3.3 vs. 10.4 ± 6.6, p < 0.05).CONCLUSION: Physical activity or body fat was not associated with autonomic function profile. VO2PEAK correlated to autonomic function profile in boys.
|
|
| 7. |
- Tanha, Tina, et al.
(författare)
-
Head-to-head comparison between Actigraph 7164 and GT1M accelerometers in adolescents.
- 2013
-
Ingår i: Clinical Physiology and Functional Imaging. - : Wiley. - 1475-0961. ; 33:2, s. 162-165
-
Tidskriftsartikel (refereegranskat)abstract
- We compared, head-to-head, the old generation Actigraph model 7164 with the new generation Actigraph GT1M accelerometer. A total of 15 randomly selected teenagers (eight girls and seven boys) were investigated. They performed a treadmill test wearing the two kinds of accelerometers around the waist simultaneously. The treadmill test consisted of three different levels of speed 4, 6 and 8 km h(-1) for four consecutive minutes. Accelerometer counts per 1 sec epoch for the Actigraph GT1M versus the Actigraph 7164 were at 4 km h(-1) 21·6 ± 12·9 versus 26·5 ± 11·5 counts, at 6 km h(-1) 56·0 ± 23·2 versus 62·9 ± 25·6 counts and at 8 km h(-1) 142·6 ± 37·2 versus 156·4 ± 34·9 counts (P<0·01 for all levels of speed). Data from the old generation Actigraph 7164 and the new generation Actigraph GT1M accelerometers differ, where the Actigraph GT1M generates 10-23% lower values. Correction equation for Actigraph GT1M was Actigraph 7164 = 5·2484 + Actigraph GT1M counts × 1·0448. These results need to be taken into consideration when using these devices.
|
|
| 8. |
- Tanha, Tina, et al.
(författare)
-
Lack of physical activity in young children is related to higher composite risk factor score for cardiovascular disease.
- 2011
-
Ingår i: Acta paediatrica. - : Wiley. - 1651-2227 .- 0803-5253. ; 100, s. 717-721
-
Tidskriftsartikel (refereegranskat)abstract
- Aim: This study evaluates if accelerometer measured physical activity is related to higher composite risk factor scores for cardiovascular disease (CVD) in children. Methods: Cross-sectional study that included 223 children aged 7.9-11.1 years (boys n=123, girls n=100). Daily physical activity was assessed by accelerometers for four days. Body fat was quantified by dual x-ray absorptiometry. Maximal oxygen uptake was measured during a maximal exercise test. Resting heart rate and blood pressure were measured. Z-scores [(value for the individual-mean value for group)/SD] were calculated for each variable and the sum of different risk factor z-scores used as an index of composite risk factors score for CVD. Results: Partial correlations, from General Linear Model, between moderate to vigorous physical activity (MVPA), vigorous physical activity (VPA) and general physical activity (GPA) versus index of composite risk factor score were in boys -0.29, -0.33 and -0.30 (all p<0.05). The corresponding correlations in girls were -0.28, -0.32 (both p<0.05), and -0.18, (NS). Conclusion: Low amounts of MVPA and VPA were related to higher composite risk factor scores for CVD in children aged 8-11 years.
|
|
