| 21. |
- Eriksson, Charli, et al.
(författare)
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Idrott och hälsa : ett ämne för hälsa i rörelse!?
- 2005
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Ingår i: Grundskolans ämnen i ljuset av nationella utvärderingen 2003. - Stockholm : Skolverket. - 918500992X ; , s. 177-195
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 22. |
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| 23. |
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| 24. |
- Hemmingsson, Erik, et al.
(författare)
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Impact of social support intensity on walking in the severely obese : a randomized clinical trial
- 2008
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Ingår i: Obesity. - : Wiley. - 1930-7381 .- 1930-739X. ; 16:6, s. 1308-1313
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: There are few established methods for promoting physical activity (PA) in the severely obese. Because social support is a potential method for promoting PA, we compared mean steps/day during 18 weeks in severely obese outpatients receiving either standard support (SS) or added support (AS). METHODS AND PROCEDURES: Eighty severely obese outpatients from an obesity clinic were invited; 66 provided written consent, 55 were randomized, and 42 were included in final analyses (9 men, 33 women; age 44.4 +/- 13.1 years; BMI 41.9 +/- 5.5 kg/m(2)). All participants received a pedometer and a walking promotion booklet. In addition to SS, the AS group received ten 2-h group counseling sessions aimed at increasing weekly accumulated steps, every second week during the study. Each participant was asked to complete a 7-day walking diary every second week (10 observations). RESULTS: Baseline steps/day was 6,912 for the AS group and 5,311 for the SS group (P = 0.023). Data at 18 weeks showed that the AS group recorded 10,136 steps/day and the SS group 6,118 steps/day (P = 0.024). There was no allocation x time interaction (P = 0.46). During the follow-up period as a whole, the AS group recorded 1,794 more steps/day than the SS group (P = 0.0074). DISCUSSION: The AS group recorded more steps/day than the SS group, reaching a mean level of approximately 10,000 steps/day. However, the nonsignificant interaction between allocation x time suggests that this difference was present already at baseline and did not increase during follow-up.
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| 25. |
- Hemmingsson, Erik, et al.
(författare)
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Is the association between physical activity and body mass index obesity dependent?
- 2007
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Ingår i: International Journal of Obesity. - : Springer Science and Business Media LLC. - 0307-0565 .- 1476-5497. ; 31:4, s. 663-668
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Most studies indicate an inverse relationship between physical activity (PA) and body mass index (BMI). However, the impact of obesity on this relationship is unclear. OBJECTIVE: To scrutinize the BMI/PA relationship by analysing multiple categories of PA from a sample with a wide BMI range. DESIGN: PA was measured with accelerometry for 7 consecutive days during free-living conditions in 85 severely obese outpatients (mean BMI 42.7 kg/m(2) (s.d. 6.1); age 43.0 year (12.6)) and 193 control subjects (24.0 kg/m(2) (3.5); 41.6 year (13.0)). Six categories of PA were calculated from the accelerometer data (min/day of sedentary time, min/day of light PA, min/day of moderate PA, min/day of vigorous PA, activity counts/day and steps/day). Participants were stratified in obese and non-obese subgroups (BMI=30 kg/m(2) as cutoff). Associations between BMI and PA were examined in the total sample, and in subgroups. The impact of sex and age on the BMI/PA association was tested. RESULTS: In the total sample, the association between BMI and PA was significant in all PA categories except for time spent sedentary (P=0.68). However, in subgroup analyses, the association between BMI and PA in non-obese was only significant for activity counts/day (r=-0.16, P<0.05) and vigorous intensity PA (r=-0.15, P=0.05). After adjustment for age, vigorous PA remained significantly associated with BMI in the non-obese (r=-0.17, P<0.05). In obese individuals, significant associations between BMI and PA were found for all six PA categories (age adjusted), sedentary time (r=0.26, P=0.05), light PA (r=-0.30, P<0.01), moderate PA (r=-0.35, P<0.01), vigorous PA (r=-0.39, P<0.001), activity counts/day (r=-0.50, P<0.001) and steps/day (r=-0.54, P<0.001). CONCLUSION: The association between PA and BMI was weak in non-obese individuals. In contrast, BMI was highly significantly associated with PA in obese individuals. Longitudinal studies are needed to tease out the direction of association between PA and BMI across BMI categories, as the cross-sectional associations seem to be dependent on obesity status.
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| 26. |
- Hurtig-Wennlöf, Anita, 1958-, et al.
(författare)
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Changes in aerobic fitness in Swedish children and adolescents
- 2006
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Ingår i: Journal of Physical Activity and Health. - 1543-3080 .- 1543-5474. ; 3:1, s. 79-89
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Tidskriftsartikel (refereegranskat)abstract
- Background: Steadily declining physical activity, especially among children, and the possible adverse health outcomes such behavior could precede, is a general concern. We evaluated whether a presumed decrease in physical activity has been accompanied with a decrease in aerobic fitness of Swedish children. Methods: A maximum cycle ergometer test was performed in 935 children age 9 and 15 y, and the results were compared with previously reported data. Results: Estimated peak oxygen uptake (mL · kg-1 · min-1) in 9-y-old subjects was 37.3 in girls and 42.8 in boys; and in 15-y-olds, 40.4 in girls and 51.5 in boys. In the 9-y-olds, aerobic fitness remained lower in the current study compared to earlier data, but in the 15-y-olds the result did not differ from the 1952 data after adjustment for methodological differences. Conclusion: Our results suggest a change towards decreased aerobic fitness in 9-y-old, but not in 15-y-old, Swedish children during a 50-y time span.
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| 27. |
- Jouper, John, 1960-, et al.
(författare)
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Qigong exercise with concentration predicts increased health
- 2006
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Ingår i: THE American journal of Chinese medicine. - 0192-415X. ; 34:6, s. 949-957
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Tidskriftsartikel (refereegranskat)abstract
- Regular physical activity has many positive health effects. Despite this, approximately 50% of all adults are not exercising enough to enjoy better health and may therefore need an alternative to vigorous physical exercise. Qigong offers a gentle way to exercise the body. A questionnaire sample of 253 participants was collected and correlations with the variable Health-now were analyzed. Results showed that Health-now was positively correlated with Number of completed qigong courses (p<.05), with Level of concentration (p<.01), Session-time (p<.01), and Years of practice (p<.05). Among these variables, Concentration predicts an increased feeling of Health (R2 = 0.092). Qigong exercise thereby seems to offer a viable alternative to other more vigorous physical activities when wellness is the primary goal. When interpreted using self-determination theory, qigong seems to satisfy needs related to autonomy, competence and relatedness, thereby primarily attracting individuals who are intrinsically motivated.
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| 28. |
- Jouper, John, 1960-
(författare)
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Qigong in daily life : motivation and intention to mindful exercise
- 2009
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In many countries physical inactivity and a sedentary lifestyle are identified as major public health problems. A general health goal is therefore to promote an active lifestyle throughout the entire life span. The reasons given for not adopting a physically active lifestyle and/or taking part in vigorous exercise include old age, negative social and physical environments, physical disability and other health related issues. Qigong exercise, a low-intensity Chinese self-care method, has therefore been suggested as an alternative activity to vigorous exercise. There is, however, little knowledge about leisure-time qigong exercisers and their reasons for adherence. The general aim of this thesis was therefore to explore leisure-time medical qigong and those practicing it, and to examine how individuals’ motivation and intention to exercise are related to their actual exercise in daily life. Behavioural changes towards an active lifestyle will be discussed from both medical qigong and exercise psychology perspectives. Suggestions are then summarized into a qigong-based Wellness Coaching Model. Participants were recruited from a qigong association and introductory qigong courses. Data were collected by questionnaires and were analysed using both descriptive and inferential statistical methods. The reasons given for leisure-time medical qigong exercise were to aid recovery from illness and to preserve health. Participants in the low-intensity qigong exercise group studied were somewhat older, and their main reason for participating was to achieve a general feeling of wellness. As a group they had mainly low-stress levels and were highly energized. Concentration on qi-flow during exercise correlates positively with improved health feelings, and exercise is performed with deep mindful concentration three to six times per week for an average of thirty minutes. Perceived stress correlates negatively with health, energy and exercise behaviour suggesting that stress has to be managed in order for wellness to emerge. Intrinsically motivated exercisers are more concentrated, and perceive their stress as lower than that of their more externally motivated counterparts. Strong behaviour intentions are significantly correlated with actual exercise frequency. When exercise is performed in a qigong state, with a heightened level of concentration, adherence is higher than otherwise is the case. Results suggest that health-professionals aiming to secure qigong exercise adherence should stimulate feelings of wellness as an intrinsic motive for exercise, strengthen the individuals’ intention to exercise, and promote a calm energy state (low-stress and high energy) before commencement of exercise.
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| 29. |
- Kadi, Fawzi, et al.
(författare)
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Effects of one bout of endurance exercise on the expression of myogenin in human quadriceps muscle
- 2004
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Ingår i: Histochemistry and Cell Biology. - : Springer Science and Business Media LLC. - 0948-6143 .- 1432-119X. ; 121:4, s. 329-334
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Tidskriftsartikel (refereegranskat)abstract
- The objective of this study was to investigate the cellular localisation of MyoD and myogenin in human skeletal muscle fibres as well as the possible alterations in the expression of MyoD and myogenin in response to a single bout of endurance exercise at 40% and 75% of maximum oxygen uptake (VO(2) max). Twenty-five biopsies (5 per subject) from the vastus lateralis muscle were obtained before exercise, from the exercising leg at 40% and 75% of VO(2) max and from the resting leg following these exercise bouts. The tyramide signal amplification-direct and the Vectastain ABC methods using specific monoclonal antibodies were used to determine the exact location of myogenin and MyoD, to identify muscle satellite cells and to determine myosin heavy chain (MyHC) composition. At rest, myonuclei did not express MyoD or myogenin. Following a single bout of exercise at 40% and 75% of VO(2) max, an accumulation of myogenin in myonuclei and not in satellite cells was observed in biopsies from the exercised leg but not in biopsies before exercise and from the resting leg. The number of myogenin-positive myonuclei varied among individuals indicating differences in the response to a single exercise bout. In conclusion, this immunohistochemical study showed that a rapid rearrangement of myogenin expression occurs in exercised human skeletal muscles in response to a single bout of exercise.
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| 30. |
- Kadi, Fawzi, 1970-
(författare)
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Fysisk träning och telomerer
- 2008
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Ingår i: Svensk Idrottsforskning. - 1103-4629. ; :2, s. 20-21
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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