Pedometer Steps-Per-Minute, Moderate Intensity, and Individual Differences in 12- to 14-Year-Old Youth

2011 ◽  
Vol 8 (2) ◽  
pp. 272-278 ◽  
Author(s):  
Susan Vincent Graser ◽  
Alan Groves ◽  
Keven A. Prusak ◽  
Todd R. Pennington
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Individual Differences ◽  
Moderate Intensity ◽  
Moderate Physical Activity ◽  
Moderate Activity ◽  
Heart Rate Monitor ◽  
Activity Intensity ◽  
Intensity Threshold ◽  
The Impact

Background:Researchers have noted both the utility and limitations of using pedometers to measure physical activity (PA). While these unobtrusive devices are widely accepted for their ability to measure accumulated PA, they have been criticized for their inability to measure exercise intensity. However, recent steps-per-minute (SPM) research provides reasonably accurate measures of intensity allowing users to assess time spent at recommended PA levels. Therefore, the purpose of this study was to determine the SPM taken that are associated with moderate physical activity in 12- to 14-year-old youth.Methods:Ninety-three participants (49 boys and 44 girls; ages 12 to 14) walked on a treadmill for 3 minutes at each of 4 different speeds while wearing a pedometer and a heart rate monitor.Results:On average boys and girls reached their moderate activity intensity threshold at 122 SPM and 102 SPM, respectively. However, individual differences must be taken into account when determining appropriate SPM intensities for youth.Conclusions:The impact of individual differences underscores the need to address SPM for moderate intensity individually rather than with a single guideline for everyone at this age.

scholarly journals Feasibility of a Commercially Available Virtual Reality System to Achieve Exercise Guidelines in Youth With Spina Bifida: Mixed Methods Case Study (Preprint)

2020 ◽  
Author(s):  
Byron Lai ◽  
Drew Davis ◽  
Mai Narasaki-Jara ◽  
Betsy Hopson ◽  
Danielle Powell ◽  
...  
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Virtual Reality ◽  
Spina Bifida ◽  
Moderate Intensity ◽  
Full Time ◽  
Heart Rate Monitor ◽  
Intervention Protocol ◽  
Exercise Guidelines ◽  
Total Average

BACKGROUND Access to physical activity among youth with spina bifida (SB) is much lower than it is for children without disability. Enjoyable home-based exercise programs are greatly needed. OBJECTIVE Our objective is to examine the feasibility of a virtual reality (VR) active video gaming system (ie, bundle of consumer-available equipment) to meet US physical activity guidelines in two youth with SB. METHODS Two youth with SB—a 12-year-old female and a 13-year-old male; both full-time wheelchair users—participated in a brief, 4-week exercise program using a popular VR head-mounted display: Oculus Quest (Facebook Technologies). The system included a Polar H10 (Polar Canada) Bluetooth heart rate monitor, a no-cost mobile phone app (VR Health Exercise Tracker [Virtual Reality Institute of Health and Exercise]), and 13 games. The intervention protocol was conducted entirely in the homes of the participants due to the coronavirus disease 2019 (COVID-19) pandemic. The VR system was shipped to participants and they were instructed to do their best to complete 60 minutes of moderate-intensity VR exercise per day. Exercise duration, intensity, and calories expended were objectively monitored and recorded during exercise using the heart rate monitor and a mobile app. Fatigue and depression were measured via self-report questionnaires at pre- and postintervention. Participants underwent a semistructured interview with research staff at postintervention. RESULTS Across the intervention period, the total average minutes of all exercise performed each week for participants 1 and 2 were 281 (SD 93) and 262 (SD 55) minutes, respectively. The total average minutes of moderate-intensity exercise performed per week for participants 1 and 2 were 184 (SD 103) (184/281, 65.4%) and 215 (SD 90) (215/262, 82.1%) minutes, respectively. One participant had a reduction in their depression score, using the Quality of Life in Neurological Disorders (Neuro-QoL) test, from baseline to postintervention, but no other changes were observed for fatigue and depression scores. Participants reported that the amount of exercise they completed was far higher than what was objectively recorded, due to usability issues with the chest-worn heart rate monitor. Participants noted that they were motivated to exercise due to the enjoyment of the games and VR headset as well as support from a caregiver. CONCLUSIONS This study demonstrated that two youth with SB who used wheelchairs could use a VR system to independently and safely achieve exercise guidelines at home. Study findings identified a promising protocol for promoting exercise in this population and this warrants further examination in future studies with larger samples.

scholarly journals Interaction of physical activity and diet: implications for haemostatic factors

1999 ◽  
Vol 2 (3a) ◽  
pp. 383-390 ◽  
Author(s):  
Rainer Rauramaa ◽  
SB Väisänen
Keyword(s):  
Physical Activity ◽  
Blood Coagulation ◽  
Lifestyle Changes ◽  
Regular Physical Activity ◽  
Moderate Intensity ◽  
Moderate Physical Activity ◽  
Platelet Aggregability ◽  
Moderate Intensity Physical Activity ◽  
Intensity Physical Activity ◽  
The Impact

AbstractRegular moderate intensity physical activity and habitual diet providing no more than one third of energy from fats have been recommended for the prevention of atherosclerotic diseases. The background for these guidelines is the key role of plasma lipids. However, the importance of thrombogenesis in acute myocardial infarction has become obvious during the last decade. Hyperlipidaemia and excess of adipose tissue increase platelet aggregability and blood coagulation, and decrease fibrinolysis. Both regular physical activity and dietary fat reduction decrease blood lipids and body fat thereby diminishing the risk of thrombosis. Currently, data on interactions between physical activity and diet on haemostasis are scarce, and the few studies available have not demonstrated additional effects when these two lifestyle modifications have been combined. This paper is restricted only to studies using controlled randomized design. Regular moderate intensity physical activity as well as diet rich in omega-3 fatty acids decrease platelet aggregability. The effects of regular physical activity on plasma fibrinogen remain contradictory, while the impact of diet is even less clear. Plasminogen activator inhibitor-1, a possible link between insulin resistance syndrome and coronary heart disease, may decrease due to physical training or low fat diet. It can be hypothesized that moderation in physical activity and diet carries a more powerful impact on blood coagulation and fibrinolysis than either lifestyle modification alone. Studies focusing on the interactions of regular moderate physical activity and fat-modified diet are needed in efforts to optimize the preventive actions by lifestyle changes.

scholarly journals Impact of physical activity and lifestyle in pre-infection on the susceptibility and prognosis of infects with COVID-19

2020 ◽  
Author(s):  
Baozhen Huang ◽  
Shixi Zhang ◽  
Jiuyu Gong ◽  
Yanlin Niu ◽  
Fengjuan Zhang ◽  
...  
Keyword(s):  
Physical Activity ◽  
Hospital Stay ◽  
Regression Models ◽  
Moderate Physical Activity ◽  
Intensity Level ◽  
Moderate Activity ◽  
Physical Activity Intensity ◽  
Special Effect ◽  
Lifestyle Habits ◽  
Activity Intensity

Abstract Background There are very few studies focusing on the relationship between COVID-19 and pre-infection lifestyle. In the absence of effective vaccines and special-effect medicines, it is very meaningful to actively respond to the disease pandemic by improving lifestyle habits. Methods This is a multicenter, retrospective cohort study enrolled 431 adult people including 228 normal people and 203 confirmed infects in Wubei, Henan and Shandong Provinces. Questionnaires were used to collect information on physical activity and lifestyle by competent doctors. The univariate logistic regression models and multiple regression models were used in risk factor analysis. Kruskal-Wallis H test were used to test the correlation. Results Lifestyle habits including exercise, smoking, sedentary behavior and physical activity intensity can significantly affect the probability of getting COVID-19 (P < 0.05). The MET (Metabolic Equivalent) intensity classification and sleep status are found to be the potential influencing factors of prognosis in both all infects and symptomatic patients. In all infects, taking the high MET intensity level as a reference, inpatient days would increase by 1.812 times (95% CI: 0.887–3.701) with no significance when the level is moderate (P > 0.05) and significantly increase by 6.674 times (95% CI: 1.613–27.613) when the level is low (P < 0.05). Kruskal-Wallis H test results showed moderate activity MET*min promoted shorter hospital stay (P < 0.05) mainly. Conclusions Sleep status and physical activity influenced the susceptibility and prognosis of COVID-19. Lack of sleep and low MET intensity level may prolong the hospital stay, which means a relatively slow recovery. This encourages the public to have moderate physical activity and adequate sleep to respond to the COVID-19 pandemic actively.

scholarly journals What intensity of exercise is most suitable for the elderly in China? A propensity score matching analysis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xinlin Chen ◽  
Dai Su ◽  
Xinlan Chen ◽  
Yingchun Chen
Keyword(s):  
Physical Activity ◽  
Life Satisfaction ◽  
Propensity Score ◽  
Propensity Score Matching ◽  
The Elderly ◽  
Moderate Intensity ◽  
Moderate Physical Activity ◽  
Moderate Activity ◽  
Successful Ageing ◽  
Ageing Society

Abstract Background The strategy of successful ageing is an important means to deal with the challenges of the current ageing society. This paper aims to explore the effects of different intensities of physical activity on the successful ageing of the elderly. Methods Our data were from wave 4 of the China Health and Retirement Longitudinal Survey (CHARLS), involving 9026 residents aged 60 years and older. The intensity of physical activity was divided into three levels: vigorous, moderate and mild. The concept of successful ageing adopted a four-dimensional model of life satisfaction added to the theoretical model of Rowe and Kahn’s. Propensity score matching (PSM) with controlling nine confounding factors were used to analyse the effects of different intensities of physical activity. Results The percentage of successful ageing was 1.88% among all subjects. Among them, 30.26, 29.57 and 29.40% of the elderly often participated in vigorous, moderate and mild physical activity, respectively. The results of PSM showed that participation in moderate activity increased the probability of successful ageing of the elderly by 0.76–0.78% (P < 0.001), while participation in vigorous and mild physical activity had no significant effect on successful ageing (P > 0.05). Moderate physical activity had statistically significant effects on four components of successful aging, including major disease, physical function, life satisfaction, and social participation (P < 0.05). Conclusion Moderate-intensity physical activity was most beneficial to the successful ageing of the elderly and should be promoted in the elderly population.

scholarly journals The prevalence of physical inactivity in Iranian adolescents and the impact of economic and social inequalities on it: results of a National Study in 2018

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Ghobad Moradi ◽  
Farideh Mostafavi ◽  
Bakhtiar Piroozi ◽  
Bushra Zareie ◽  
Marzieh Mahboobi ◽  
...  
Keyword(s):  
Physical Activity ◽  
High School ◽  
Physical Inactivity ◽  
Social Inequalities ◽  
National Study ◽  
Moderate Physical Activity ◽  
Moderate Activity ◽  
Study Population ◽  
The Impact ◽  
Socioeconomic Levels

Abstract Background This study aims to determine the prevalence of physical inactivity in Iranian adolescents aged 10–12 years and the impact of socioeconomic inequality on it. Methods In this descriptive study, the study population consisted of 10–12 years old adolescents from an Iranian population from Kurdistan, Fars and Markazi provinces in 2018. The sample size was 1590 individuals. The sampling method was cluster sampling. Data was collected using demographic questionnaire, modifiable activity questionnaire (MAQ) and socioeconomic questionnaire. Cut points on the MAQ for light activity, moderate activity and heavy activity were MET< 3, MET = 3–6 and MET> 6, respectively. Linear and logistic regression were used to estimate the final model and the Oaxaca analysis method was applied. All analyses were performed in Stata/SE 14.0. Results Of the 1590 participants, 52.82% were male. The results showed that 25.79% of the subjects were physically inactive and 7.30% engaged in moderate physical activity during the week. The average physical activity during 1 week was more in boys than in girls (P-value< 0.05). Adolescents of mothers with secondary and high school education were more likely to have physical inactivity than mothers with a high school diploma or higher (AOR: 1.35, 95% CI: 1.02–1.77). The concentration index was −.11, indicating a greater concentration of physical inactivity in adolescents with low socioeconomic levels. Conclusion One-fourth of the study population had physical inactivity in this age group. Socioeconomic levels, parental literacy, and sex of adolescents were associated with the level of physical activity.

scholarly journals Criterion validity of the Physical Activity Scale (PAS2) in Danish adults

2017 ◽  
Vol 46 (7) ◽  
pp. 726-734 ◽  
Author(s):  
E.S.L. Pedersen ◽  
L.H. Mortensen ◽  
S. Brage ◽  
A.L. Bjerregaard ◽  
M. Aadahl
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Sedentary Behaviour ◽  
Adult Population ◽  
Criterion Validity ◽  
Moderate Intensity ◽  
Moderate Activity ◽  
Vigorous Intensity ◽  
Activity Scale ◽  
Physical Activity Scale

Background: The Physical Activity Scale (PAS2) was developed to measure physical activity (PA) during work, transportation and leisure time, in the Danish adult population. The objective of this study was to assess the criterion validity of PAS2 against a combined accelerometer and heart rate monitor in Danish adults and to investigate if the criterion validity differed by socio-demographic factors and body mass index. Method: A total of 330 Danish adults (mean age = 46.7 years, 38.5% men) participating in the Health2008 study completed the PAS2 questionnaire and wore a combined accelerometer and heart rate sensor for seven days. Average daily estimates from PAS2 were categorised into time spent in sedentary behaviour, light PA, moderate PA and vigorous PA and were compared to the objective measures. Results: PAS2 accounted for 19.5 hours/day on average. Time spent in sedentary behaviour, light and moderate-intensity PA was weakly correlated with objective data (polychoric correlation coefficients (PCC): 0.18–0.20), whereas vigorous intensity PA was moderately correlated (PCC: 0.54, p = 0.04). Mean bias was −2.3 hours/day (95% limits of agreement (LoA): −9.04 to 4.34) for sedentary behaviour, 1.68 hours/day (LoA: 8.02 to −4.62) for light activity, 0.55 hours/day (LoA: 3.37 to −2.26) for moderate activity and 0.12 hours/day (LoA: 0.57 to 0.33) for vigorous activity. Criterion validity was lower in women, in participants who were above 40 years, overweight, had short education and were unemployed. Conclusions: PAS2 overestimated time spent on light, moderate and vigorous intensity PA and underestimated time spent on sedentary behaviour. Validity differed by key socio-demographic characteristics.

scholarly journals Convergent validity of six methods to assess physical activity in daily life

2006 ◽  
Vol 101 (5) ◽  
pp. 1328-1334 ◽  
Author(s):  
Duncan J. Macfarlane ◽  
Cherry C. Y. Lee ◽  
Edmond Y. K. Ho ◽  
K. L. Chan ◽  
Dionise Chan
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Convergent Validity ◽  
Total Activity ◽  
Habitual Physical Activity ◽  
Moderate Activity ◽  
Free Living ◽  
Heart Rate Monitor ◽  
Cut Points ◽  
Activity Promotion

The purpose was to examine the agreement (convergent validity) between six common measures of habitual physical activity to estimate durations of light, moderate, vigorous, and total activity in a range of free-living individuals. Over 7 consecutive days, 49 ethnic Chinese (30 men, 19 women), aged 15–55 yr, wore a Polar heart rate monitor, a uniaxial MTI, and triaxial Tritrac accelerometer, plus a Yamax pedometer for ≥600 min/day. They also completed a daily physical activity log and on day 8 a Chinese version of the 7-day International Physical Activity Questionnaire. At each level of activity, there was good agreement between the two questionnaire-derived instruments and the two accelerometry-derived instruments, but wide variation across different instruments, with two- to fourfold differences in mean durations often seen. The heart rate monitor overestimated light activity and underestimated moderate activity compared with all other measures. Spearman correlation coefficients were low to moderate (0.2–0.5) across most measures of activity, with the pedometer showing correlations with total activity that were often superior to the other movement sensors. We conclude that, with the use of commonly accepted cut points for defining light, moderate, vigorous, and total activity, little convergent validity across the instruments was evident, suggesting these measures are sampling different levels of habitual physical activity and care is needed when comparing their results. To provide a more stable comparison of activity among different people, across studies, or against accepted physical activity promotion guidelines, further work is needed to fine tune the different cut points across a range of common activity monitors to provide more consistent results during free-living conditions.

scholarly journals Impact of moderate exercise on fatty acid oxidation in pancreatic β-cells and skeletal muscle

2021 ◽  
Author(s):  
A. Langlois ◽  
A. Forterre ◽  
M. Pinget ◽  
K. Bouzakri
Keyword(s):  
Physical Activity ◽  
Skeletal Muscle ◽  
Glycaemic Control ◽  
Metabolic Disorders ◽  
Acid Oxidation ◽  
Moderate Physical Activity ◽  
Moderate Activity ◽  
Β Cells ◽  
Pancreatic Β Cells ◽  
The Impact

AbstractFatty acids (FA) play a crucial role in glycaemia regulation in healthy and metabolic disorders conditions through various mechanisms. FA oxidation is one of the processes involved in lipid metabolism and can be modulated by exercise. Nowadays, physical activity is known to be an effective strategy for the prevention and treatment of Type 2 Diabetes. Moreover, its intensity, its duration, the sex-gender, the prandial state, exerkines… are as many parameters that can influence glycaemic control. However, the widely debated question is to determine the best type of exercise for patients with metabolic disorders. In this review, we will discuss the impact of exercise intensity, especially moderate activity, on glycaemic control by focussing on FA oxidation in pancreatic β-cells and skeletal muscle. Finally, thanks to all the recent data, we will determine whether moderate physical activity is a good therapeutic strategy and if FA oxidation represents a target of interest to treat diabetic, obese and insulin-resistant patients.

scholarly journals Feasibility of a Commercially Available Virtual Reality System to Achieve Exercise Guidelines in Youth With Spina Bifida: Mixed Methods Case Study

10.2196/20667 ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. e20667
Author(s):  
Byron Lai ◽  
Drew Davis ◽  
Mai Narasaki-Jara ◽  
Betsy Hopson ◽  
Danielle Powell ◽  
...  
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Virtual Reality ◽  
Spina Bifida ◽  
Moderate Intensity ◽  
Full Time ◽  
Heart Rate Monitor ◽  
Intervention Protocol ◽  
Exercise Guidelines ◽  
Total Average

Background Access to physical activity among youth with spina bifida (SB) is much lower than it is for children without disability. Enjoyable home-based exercise programs are greatly needed. Objective Our objective is to examine the feasibility of a virtual reality (VR) active video gaming system (ie, bundle of consumer-available equipment) to meet US physical activity guidelines in two youth with SB. Methods Two youth with SB—a 12-year-old female and a 13-year-old male; both full-time wheelchair users—participated in a brief, 4-week exercise program using a popular VR head-mounted display: Oculus Quest (Facebook Technologies). The system included a Polar H10 (Polar Canada) Bluetooth heart rate monitor, a no-cost mobile phone app (VR Health Exercise Tracker [Virtual Reality Institute of Health and Exercise]), and 13 games. The intervention protocol was conducted entirely in the homes of the participants due to the coronavirus disease 2019 (COVID-19) pandemic. The VR system was shipped to participants and they were instructed to do their best to complete 60 minutes of moderate-intensity VR exercise per day. Exercise duration, intensity, and calories expended were objectively monitored and recorded during exercise using the heart rate monitor and a mobile app. Fatigue and depression were measured via self-report questionnaires at pre- and postintervention. Participants underwent a semistructured interview with research staff at postintervention. Results Across the intervention period, the total average minutes of all exercise performed each week for participants 1 and 2 were 281 (SD 93) and 262 (SD 55) minutes, respectively. The total average minutes of moderate-intensity exercise performed per week for participants 1 and 2 were 184 (SD 103) (184/281, 65.4%) and 215 (SD 90) (215/262, 82.1%) minutes, respectively. One participant had a reduction in their depression score, using the Quality of Life in Neurological Disorders (Neuro-QoL) test, from baseline to postintervention, but no other changes were observed for fatigue and depression scores. Participants reported that the amount of exercise they completed was far higher than what was objectively recorded, due to usability issues with the chest-worn heart rate monitor. Participants noted that they were motivated to exercise due to the enjoyment of the games and VR headset as well as support from a caregiver. Conclusions This study demonstrated that two youth with SB who used wheelchairs could use a VR system to independently and safely achieve exercise guidelines at home. Study findings identified a promising protocol for promoting exercise in this population and this warrants further examination in future studies with larger samples.

The Effect of Changes to Question Order on the Prevalence of ‘Sufficient’ Physical Activity in an Australian Population Survey

2013 ◽  
Vol 10 (3) ◽  
pp. 390-396
Author(s):  
Christine Hanley ◽  
Mitch J. Duncan ◽  
W. Kerry Mummery
Keyword(s):  
Physical Activity ◽  
Binary Logistic Regression ◽  
Total Activity ◽  
Order Effects ◽  
Computer Assisted ◽  
Moderate Activity ◽  
Question Order ◽  
Recreational Walking ◽  
Cati Survey ◽  
The Impact

Background:Population surveys are frequently used to assess prevalence, correlates and health benefits of physical activity. However, nonsampling errors, such as question order effects, in surveys may lead to imprecision in self reported physical activity. This study examined the impact of modified question order in a commonly used physical activity questionnaire on the prevalence of sufficient physical activity.Methods:Data were obtained from a telephone survey of adults living in Queensland, Australia. A total of 1243 adults participated in the computer-assisted telephone interview (CATI) survey conducted in July 2008 which included the Active Australia Questionnaire (AAQ) presented in traditional or modified order. Binary logistic regression analyses was used to examine relationships between question order and physical activity outcomes.Results:Significant relationships were found between question order and sufficient activity, recreational walking, moderate activity, vigorous activity, and total activity. Respondents who received the AAQ in modified order were more likely to be categorized as sufficiently active (OR = 1.28, 95% CI 1.01−1.60).Conclusions:This study highlights the importance of question order on estimates of self reported physical activity. This study has shown that changes in question order can lead to an increase in the proportion of participants classified as sufficiently active.

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