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- Sperlich, Billy, et al.
(författare)
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A 4-Week Intervention Involving Mobile-Based Daily 6-Minute Micro-Sessions of Functional High-Intensity Circuit Training Improves Strength and Quality of Life, but Not Cardio-Respiratory Fitness of Young Untrained Adults
- 2018
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Ingår i: Frontiers in Physiology. - : Frontiers Media SA. - 1664-042X. ; 9
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Tidskriftsartikel (refereegranskat)abstract
- The present study was designed to assess the psycho-physiological responses of physically untrained individuals to mobile-based multi-stimulating, circuit-like, multiplejoint conditioning (CircuitHiu) performed either once (IxCircuitmu) or twice (2xCircuitHiu) daily for 4 weeks. In this single-center, two-arm randomized, controlled study, 24 men and women (age: 25 +/- 5 years) first received no training instructions for 4 weeks and then performed 4 weeks of either IxCircuitnirr or 2xCircuitHiu (5 men and 7 women in each group) daily. The IxCircuitnirr and 2xCircuitHiu participants carried out 90.7 and 85.7% of all planned training sessions, respectively, with average heart rates during the 6-min sessions of 74.3 and 70.8% of maximal heart rate. Body, fat and fat-free mass, and metabolic rate at rest did not differ between the groups or between time-points of measurement. Heart rate while running at 6 km h(-1) declined after the intervention in both groups. Submaximal and peak oxygen uptake, the respiratory exchange ratio and heart rate recovery were not altered by either intervention. The maximal numbers of push-ups, leg-levers, burpees, 45 degrees-one-legged squats and 30-s skipping, as well as perception of general health improved in both groups. Our IxCircuitHiu or 2xCircuitHiiT interventions improved certain parameters of functional strength and certain dimensions of quality of life in young untrained individuals. However, they were not sufficient to enhance cardio-respiratory fitness, in particular peak oxygen uptake.
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| 2. |
- Sperlich, B, et al.
(författare)
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Prolonged Sitting Interrupted by 6-Min of High-Intensity Exercise : Circulatory, Metabolic, Hormonal, Thermal, Cognitive, and Perceptual Responses
- 2018
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Ingår i: Frontiers in Physiology. - : Frontiers Media SA. - 1664-042X. ; 9
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Tidskriftsartikel (refereegranskat)abstract
- The aim was to examine certain aspects of circulatory, metabolic, hormonal,thermoregulatory, cognitive, and perceptual responses while sitting following a briefsession of high-intensity interval exercise. Twelve students (five men; age, 222 years) performed two trials involving either simply sitting for 180 min (SIT) or sitting for this same period with a 6-min session of high-intensity exercise after 60 min (SIT CHIIT).At T0 (after 30 min of resting), T1 (after a 20-min breakfast), T2 (after sitting for 1 h),T3 (immediately after the HIIT), T4, T5, T6, and T7 (30, 60, 90, and 120 min afterthe HIIT), circulatory, metabolic, hormonal, thermoregulatory, cognitive, and perceptualresponses were assessed. The blood lactate concentration (at T3–T5), heart rate (atT3–T6), oxygen uptake (at T3–T7), respiratory exchange ratio, and sensations of heat(T3–T5), sweating (T3, T4) and odor (T3), as well as perception of vigor (T3–T6), werehigher and the respiratory exchange ratio (T4–T7) and mean body and skin temperatures(T3) lower in the SITCHIIT than the SIT trial. Levels of blood glucose and salivary cortisol,cerebral oxygenation, and feelings of anxiety/depression, fatigue or hostility, as well asthe variables of cognitive function assessed by the Stroop test did not differ betweenSIT and SITCHIIT. In conclusion, interruption of prolonged sitting with a 6-min sessionof HIIT induced more pronounced circulatory and metabolic responses and improvedcertain aspects of perception, without affecting selected hormonal, thermoregulatory orcognitive functions.
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| 3. |
- Tremblay, Mark S, et al.
(författare)
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Sedentary Behavior Research Network (SBRN) - Terminology Consensus Project process and outcome.
- 2017
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Ingår i: The international journal of behavioral nutrition and physical activity. - : Springer Science and Business Media LLC. - 1479-5868. ; 14:1
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Tidskriftsartikel (refereegranskat)abstract
- The prominence of sedentary behavior research in health science has grown rapidly. With this growth there is increasing urgency for clear, common and accepted terminology and definitions. Such standardization is difficult to achieve, especially across multi-disciplinary researchers, practitioners, and industries. The Sedentary Behavior Research Network (SBRN) undertook a Terminology Consensus Project to address this need.First, a literature review was completed to identify key terms in sedentary behavior research. These key terms were then reviewed and modified by a Steering Committee formed by SBRN. Next, SBRN members were invited to contribute to this project and interested participants reviewed and provided feedback on the proposed list of terms and draft definitions through an online survey. Finally, a conceptual model and consensus definitions (including caveats and examples for all age groups and functional abilities) were finalized based on the feedback received from the 87 SBRN member participants who responded to the original invitation and survey.Consensus definitions for the terms physical inactivity, stationary behavior, sedentary behavior, standing, screen time, non-screen-based sedentary time, sitting, reclining, lying, sedentary behavior pattern, as well as how the terms bouts, breaks, and interruptions should be used in this context are provided.It is hoped that the definitions resulting from this comprehensive, transparent, and broad-based participatory process will result in standardized terminology that is widely supported and adopted, thereby advancing future research, interventions, policies, and practices related to sedentary behaviors.
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| 4. |
- Wallmann-Sperlich, Birgit, et al.
(författare)
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Physical Activity and the Perceived Neighbourhood Environment : Looking at the Association the Other Way Around
- 2014
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Ingår i: International Journal of Environmental Research and Public Health. - : MDPI AG. - 1661-7827 .- 1660-4601. ; 11:8, s. 8093-8111
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Tidskriftsartikel (refereegranskat)abstract
- The association between physical activity (PA) and variables of the perceived environment mainly originate from cross-sectional studies that introduced the idea that the environment influences the PA level of residents. However, the direction of cause and effect has not been solved with finality. The aim of this study was to investigate whether residents’ perception of their proximate environment differs depending on their level of PA in transport and recreation. We conducted a cross-sectional survey with residents of six different parts of thecity of Cologne, Germany. The sample of 470 adults (52.8% females; mean age =35.5 ± 13.8 years) filled in the Global Physical Activity Questionnaire (GPAQ),as well as the European Environmental Questionnaire ALPHA. To distinguishbetween residents with ‘low’ and ‘high’ PA, we split the samples into two on the basis of the specific median in transport- and recreation-related PA. In the ‘high’ vs. ‘low’ PA group of the overall sample, we noted 4–16% more ‘PA favourable’ environmental perceptions in seven of the 15 environmental variables. Multiple linear regression analyses were performed to investigate associations of socio-demographic correlates and transport- and recreation-related PA on the dependent variables of the environmental perception. In this case,levels of PA were significant predictors for eight of the 15 items concerning environmental perceptions. Thus, the present study introduces the idea that residents with higher levels of transport and recreational PA may perceive their environment in a more ‘PA-favourable’ way than residents with lower levels.
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