scholarly journals Cardiorespiratory fitness, occupational aerobic workload and age: workplace measurements among blue-collar workers

2020 ◽  
Author(s):  
Matthew Leigh Stevens ◽  
Patrick Crowley ◽  
Andreas Holtermann ◽  
Ole Steen Mortensen ◽  
Mette Korshøj
Keyword(s):  
Heart Rate ◽  
Cardiorespiratory Fitness ◽  
Age Groups ◽  
Blue Collar ◽  
Linear Regression Models ◽  
Work Intensity ◽  
Daily Work ◽  
Average Percentage ◽  
Blue Collar Workers ◽  
Normal Work

Abstract Background The knowledge, from laboratory studies dating back to the 1950s on the importance of the association between cardiorespiratory fitness and aerobic workload for workers health, is fundamental for promoting sustainable healthy employability among ageing blue-collar workers today. However, the association between cardiorespiratory fitness and aerobic workload has not yet been documented during daily work, and we do not know if it applies to the normal work of blue-collar workers in different age groups. We aim to investigate the association between cardiorespiratory fitness and aerobic workload among blue-collar workers using measurements of 24-h heart rate collected over consecutive working days. Methods We analyzed baseline cardiorespiratory fitness, assessed using a sub-maximal cycle ergometer test, and 1–4 days of 24-h heart rate measurement from 497 blue-collar workers participating in the DPHACTO study. We investigated the association between cardiorespiratory fitness and aerobic workload defined as the average percentage of heart rate reserve (%HRR), maximum %HRR and the duration time spent at a high HRR (> 30%) during working hours. The association was assessed using multivariate linear regression models adjusted for age, sex, self-rated health, shift-work, prescription medication and occupation, as well as for different age strata. Results Higher cardiorespiratory fitness was significantly associated with decreased mean %HRR −0.32 [95% CI −0.39 to −0.25], maximum %HRR −0.35 [95% CI −0.45 to −0.25] and time spent at  ≥ 30% HRR; −1.8% [95% CI −2.2 to −1.5%]. These associations were evident across age groups, with slightly stronger associations for workers aged 46–51 (total range 18–68). Conclusions Higher cardiorespiratory fitness was associated with the decreased aerobic workload during normal work across all age groups and levels of work intensity. Our findings highlight the importance of cardiorespiratory fitness when considering the workload and its relevance in the promotion of healthy sustainable employment.

scholarly journals Objectively Measured Sitting and Standing in Workers: Cross-Sectional Relationship with Autonomic Cardiac Modulation

2019 ◽  
Vol 16 (4) ◽  
pp. 650 ◽  
Author(s):  
David Hallman ◽  
Niklas Krause ◽  
Magnus Jensen ◽  
Nidhi Gupta ◽  
Marie Birk Jørgensen ◽  
...  
Keyword(s):  
Heart Rate ◽  
Blue Collar ◽  
Sitting Time ◽  
Linear Regression Models ◽  
Cross Sectional ◽  
Prolonged Standing ◽  
Blue Collar Workers ◽  
Small Effect Size ◽  
Objectively Measured ◽  
Cardiac Modulation

Excessive sitting and standing are proposed risk factors for cardiovascular diseases (CVDs), possibly due to autonomic imbalance. This study examines the association of objectively measured sitting and standing with nocturnal autonomic cardiac modulation. The cross-sectional study examined 490 blue-collar workers in three Danish occupational sectors. Sitting and standing during work and leisure were assessed during 1–5 days using accelerometers. Heart rate (HR) and heart rate variability (HRV) were obtained during nocturnal sleep as markers of resting autonomic modulation. The associations of sitting and standing still (h/day) with HR and HRV were assessed with linear regression models, adjusted for age, gender, body mass index, smoking, and physical activity. More sitting time during leisure was associated with elevated HR (p = 0.02), and showed a trend towards reduced HRV. More standing time at work was associated with lower HR (p = 0.02), and with increased parasympathetic indices of HRV (root mean squared successive differences of R-R intervals p = 0.05; high-frequency power p = 0.07). These findings, while cross-sectional and restricted to blue-collar workers, suggest that sitting at leisure is detrimental to autonomic cardiac modulation, but standing at work is beneficial. However, the small effect size is likely insufficient to mitigate the previously shown detrimental effects of prolonged standing on CVD.

Children’s Heart Rates during British Physical Education Lessons

1997 ◽  
Vol 16 (3) ◽  
pp. 357-367 ◽  
Author(s):  
Gareth Stratton
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Physical Education ◽  
Cardiorespiratory Fitness ◽  
Age Groups ◽  
Track And Field ◽  
Activity Levels ◽  
Heart Rates ◽  
Physical Activity Levels

The purpose of this study was to assess the physical activity levels of schoolchildren during physical education lessons, using heart rate telemetry. Girls (n = 108) and boys (n = 69), age 9 to 15 years, were assessed over 66 physical education lessons. Lessons that achieved a heart rate (HR) of ≥ 150 bpm for 20 minutes or 50% of lesson time were deemed sufficiently active to promote cardiorespiratory fitness. Netball, 11- to 12-year-old girls’ gymnastics, and soccer lessons achieved the HR ≥ 150 level for over 50% of lesson time. A Sex × Age × Lesson Activity ANOVA indicated significant overall interaction for sex, age, and lesson activity for the percentage of lesson time spent in HR ≥ 150. Significant differences between age groups and lesson activities were evident. Invasion games seem more likely to attain MVPA goals than are dance, track and field, fitness, or gymnastics lessons.

scholarly journals Prolonged Sitting is Associated with Attenuated Heart Rate Variability during Sleep in Blue-Collar Workers

2015 ◽  
Vol 12 (11) ◽  
pp. 14811-14827 ◽  
Author(s):  
David Hallman ◽  
Tatiana Sato ◽  
Jesper Kristiansen ◽  
Nidhi Gupta ◽  
Jørgen Skotte ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Blue Collar ◽  
Blue Collar Workers ◽  
Prolonged Sitting

scholarly journals Differences in heart rate reserve of similar physical activities during work and in leisure time – A study among Danish blue-collar workers

2018 ◽  
Vol 186 ◽  
pp. 45-51 ◽  
Author(s):  
Pieter Coenen ◽  
Mette Korshøj ◽  
David M. Hallman ◽  
Maaike A. Huysmans ◽  
Allard J. van der Beek ◽  
...  
Keyword(s):  
Heart Rate ◽  
Leisure Time ◽  
Physical Activities ◽  
Blue Collar ◽  
Heart Rate Reserve ◽  
Blue Collar Workers

Cardiorespiratory fitness is positively associated with both healthy and western dietary pattern in Iranian middle-aged

2020 ◽  
pp. 1-10
Author(s):  
Hossein Shahinfar ◽  
Farhang Djafari ◽  
Nadia Babaei ◽  
Samira Davarzani ◽  
Mojdeh Ebaditabar ◽  
...  
Keyword(s):  
Cardiorespiratory Fitness ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Principal Component ◽  
Total Sample ◽  
Linear Regression Models ◽  
Middle Aged ◽  
Anthropometric Measures ◽  
Western Dietary Pattern ◽  
Healthy Dietary Pattern

Abstract. Background: The association between dietary patterns and cardiorespiratory fitness (CRF) is not well established. Objective: We sought to investigate association between a posteriori dietary pattern and CRF in middle-aged adults. Design: Adults (n = 276), aged 20–74 years, who were residents of Tehran, Iran were recruited. Diet was assessed by using a validated 168-item semi-quantitative food frequency questionnaire. Principal component analysis was used to derive dietary patterns. Socio-economic status, anthropometric measures, body composition, and blood pressure were recorded. CRF was assessed by using a graded exercise treadmill test. Analysis of variance and linear regression models were used to discern the association between dietary patterns and CRF. Results: Higher scores of the healthy dietary pattern had no association with VO2max (p = 0.13 ). After controlling for potential confounders, VO2max was positively associated across tertiles of healthy dietary patterns (p < 0.001). Higher adherence to the “mixed” dietary pattern was inversely related to VO2max (p < 0.01). After adjusting for confounders, the significant association disappeared (p = 0.14). Higher scores of the “Western” dietary pattern was not associated with VO2max (p = 0.06). However, after controlling for potential confounders, VO2max was positively associated with the “Western” dietary pattern (p = 0.01). A positive linear association between the “healthy” dietary pattern and CRF for the total sample (R2 = 0.02; p < 0.01) were presented. Conclusions: Overall, our findings suggest that higher adherence to a “healthy” and “Western” dietary pattern was positively associated with CRF. However, further studies are required to examine and clarify the causal relationship between dietary patterns and CRF.

The influence of osteopathic correction on the rate of various rhythms of the body

2019 ◽  
pp. 64-71 ◽  
Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Age Groups ◽  
Biomechanical Properties ◽  
Dispersion Analysis ◽  
The Body ◽  
Body Tissues ◽  
Age Related ◽  
Significant Difference ◽  
Before And After

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.

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