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- Henje Blom, Eva, 1962-, et al.
(författare)
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Heart rate variability is related to self-reported physical activity in a healthy adolescent population
- 2009
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Ingår i: European Journal of Applied Physiology. - : Springer Science and Business Media LLC. - 1439-6319 .- 1439-6327. ; 106:6, s. 877-883
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Tidskriftsartikel (refereegranskat)abstract
- This study investigated whether there is a relationship between heart rate variability (HRV) versus lifestyle and risk factors for cardiovascular disease in a population of healthy adolescents. HRV is as an index of tonic autonomic activity and in adults HRV is related to lifestyle and risk factors for cardiovascular disease, but it is not known if this is the case in adolescents. HRV was registered for 4 min in sitting position in 99 healthy adolescents (age range 15 years 11 months-17 years 7 months) and repeated after 6 months. On both occasions there were significant correlations (P < 0.05) between physical activity and HRV, with respective r values: high frequency (HF) 0.26, 0.30; low frequency power (LF) 0.35, 0.29 and the standard deviation of inter-beat intervals (SDNN) 0.28, 0.37. There was no significant interaction between first and second measurements. In contrast, there were no correlations to sleeping patterns, eating habits and smoking. Risk factors for cardiovascular disease [body mass index (BMI = weight (kg)/length in m(2)), systolic blood pressure and p-glucose] did not show any repeatable significant correlations to HRV. Multiple regression models showed that physical activity was a predictor for HF, LF and SDNN in both measurements. In conclusion HF, LF and SDNN were reproducible after 6 months and were related to physical activity on both occasions.
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| 2. |
- Chattopadhyay, Subhayan, et al.
(författare)
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Weaponized genomics : potential threats to international and human security
- 2024
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Ingår i: Nature reviews genetics. - 1471-0056 .- 1471-0064. ; 25:1-2
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Tidskriftsartikel (refereegranskat)abstract
- Genetic technologies are revolutionizing human health. In parallel, geopolitical instability has prompted renewed discussions on the risks of DNA technology being weaponized in international conflict. With today’s changing security environment, we argue that risk assessments must be broadened from genetically targeted weapons to a series of new domains.
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| 3. |
- Larsson, Gerry, Professor, 1952-, et al.
(författare)
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Perceived stress and hair cortisol level amongst conscripts during basic military training : A repeated measures study
- 2022
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Ingår i: Military Psychology. - : Informa UK Limited. - 0899-5605 .- 1532-7876. ; 34:5, s. 541-550
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Tidskriftsartikel (refereegranskat)abstract
- The aim was to examine hair cortisol levels and self-reported stress amongst conscripts during their basic military training, and how they are related to four types of theory-derived determinants. The following prediction was made: lower levels of perceived stress and hair cortisol will be associated with: (1) higher levels of emotional stability (the individual nonmilitary aspect); (2) a lower degree of private life problems (the contextual nonmilitary aspect); (3) more positive attitudes toward the military, higher engagement in military service, and higher adaptability to military conditions (the individual-military aspect); and (4) stronger group cohesion and better leadership (the contextual-military aspect). The sample consisted of a total of 107 male Lithuanian conscripts. Assessments were made at the beginning of their basic military training, in the middle, and at the end. Established instruments were used on all self-reported scales. Hair cortisol levels were established through analyses of hair samples. Low to moderate levels of stress were found throughout the basic training period regarding perceived stress levels. Hair cortisol levels were mainly unrelated to the self-rating scales. Regarding perceived stress, the prediction was fully confirmed. The future value of the theoretical model is discussed.
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