Dataset Information

Insomnia and cardiorespiratory fitness in a middle-aged population: the SCAPIS pilot study.

ABSTRACT:

Background

The relationship between insomnia and cardiorespiratory fitness (CRF), a well-established risk factor for cardiovascular disease, has not been extensively studied. We aimed to assess the independent association between insomnia and CRF in a population-based cohort of subjects aged 50 to 64 years.

Methods

Subjects participating in the Swedish CArdioPulmonary bioImaging Study (SCAPIS) pilot cohort (n?=?603, men 47.9%) underwent a submaximal cycle ergometer test for estimation of maximal oxygen consumption (VO₂max). Data on physical activity and sedentary time were collected via waist-worn accelerometers. An insomnia severity index score ??10 was used to define insomnia.

Results

Insomnia was identified in 31.8% of the population. The VO₂max was significantly lower in insomnia subjects compared with the non-insomnia group (31.2?±?6.3 vs. 32.4?±?6.5 ml* kg^-1 *min^-1, p?=?0.028). There was no difference in objectively assessed physical activity or time spent sedentary between the groups. In a multivariate generalized linear model adjusting for confounders, an independent association between insomnia status and lower VO₂max was found in men, but not in women (??=?-?1.15 [95% CI -?2.23--?0.06] and -?0.09 [-?1.09-0.92], p?=?0.038 and 0.866, respectively).

Conclusions

We found a modest, but significant, association between insomnia and lower CRF in middle-aged men, but not in women. Our results suggest that insomnia may link to cardiovascular disease via reduced CRF. Insomnia may require a specific focus in the context of health campaigns addressing CRF.

SUBMITTER: Zou D

PROVIDER: S-EPMC6418054 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Publications

Insomnia and cardiorespiratory fitness in a middle-aged population: the SCAPIS pilot study.

Zou Ding D Wennman Heini H Ekblom Örjan Ö Grote Ludger L Arvidsson Daniel D Blomberg Anders A Torén Kjell K Bergström Göran G Börjesson Mats M Hedner Jan J

Sleep & breathing = Schlaf & Atmung 20181213 1

<h4>Background</h4>The relationship between insomnia and cardiorespiratory fitness (CRF), a well-established risk factor for cardiovascular disease, has not been extensively studied. We aimed to assess the independent association between insomnia and CRF in a population-based cohort of subjects aged 50 to 64 years.<h4>Methods</h4>Subjects participating in the Swedish CArdioPulmonary bioImaging Study (SCAPIS) pilot cohort (n = 603, men 47.9%) underwent a submaximal cycle ergometer test for estima ...[more]

PMID: 30547350

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Project description:BackgroundPrevious evidence supports a beneficial effect of physical activity on executive function across the whole lifespan. Yet, the interrelationships of the intensities of physical activity, cardiorespiratory fitness, and executive function require further investigation in adults.AimUsing unfiltered accelerometry data and high-resolution intensity classification, we sought to estimate the associations of physical activity with cardiorespiratory fitness and executive function in adult office workers.MethodsWe included 343 full-time office workers (mean age: 42.41 years, range of age: 36-49 years). Executive function was assessed using Stroop, Trail making tests (part-B), and 2-back tests, and a composite score was produced to reflect the general executive function performance. Physical activity was assessed using the Actigraph GT3X+-monitor, worn by each participant for seven days at the hip. Raw accelerometry data were processed by the 10 Hz frequency extended method and divided into 22 intensity bins and sleep time. Cardiorespiratory fitness was estimated using the submaximal Ekblom-Bak cycle ergometer test. Data were analyzed using partial least squares regressions.ResultsIn adults, cardiorespiratory fitness was closely correlated with a wide range of absolute physical activity intensity patterns. A higher level of executive function in adults was associated with both higher absolute physical activity intensities and cardiorespiratory fitness, which was independent of age, sex, and education levels. A very weak association between intensities, fitness, and executive function was observed in high-fit adults. Among low-fit adults, although a positive association started already toward the upper end of moderate intensity, there still appeared to be an association between intensities, cardiorespiratory fitness, and executive function. That is, cardiorespiratory fitness may mediate the association between absolute physical activity intensities and executive function up to a certain level.ConclusionThe maintenance of executive function in adulthood was related to both physical activity intensities and cardiorespiratory fitness, while their interrelationship was not equal across fitness levels. It is highly recommended to consider the cardiorespiratory fitness level in future studies that focus on executive functions in aging as well when designing individualized physical activity training programs.

Dataset Information

Insomnia and cardiorespiratory fitness in a middle-aged population: the SCAPIS pilot study.

Background

Methods

Results

Conclusions

Publications

Insomnia and cardiorespiratory fitness in a middle-aged population: the SCAPIS pilot study.

Similar Datasets

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