A Steps/Minute Value for Moderate Intensity Physical Activity in Adolescent Females

2012 ◽  
Vol 24 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Deirdre M. Harrington ◽  
Kieran P. Dowd ◽  
Catrine Tudor-Locke ◽  
Alan E. Donnelly
Keyword(s):  
Physical Activity ◽  
Mixed Model ◽  
Adolescent Females ◽  
Moderate Intensity ◽  
Moderate Intensity Physical Activity ◽  
Metabolic Equivalents ◽  
Intensity Physical Activity ◽  
Analytical Approaches ◽  
The Relationship ◽  
Over Ground Walking

The number of steps/minute (i.e., cadence) that equates to moderate intensity in adolescents is not known. To that end, 31 adolescent females walked on a treadmill at 5 different speeds while wearing an ActivPAL accelerometer and oxygen uptake was recorded by indirect calorimetry. The relationship between metabolic equivalents (METs) and cadence was explored using 3 different analytical approaches. Cadence was a significant predictor of METs (r=.70; p<.001). Moderate intensity (3 METs) corresponded to 94 or 114 steps/minute based on the mixed model and ROC analysis, respectively. These two values, and a practical value of 100 steps/minute, were cross-validated on an independent sample of 33 adolescent females during over-ground walking at 3 speeds. The sensitivity and specificity of each value correctly identifying 3 METs were 98.5% and 87.2% for 94 steps/minute, 72.9% and 98.8 for 114 steps/minute and 96.5% and 95.7% for 100 steps/minute. Compromising on a single cadence of 100 steps/minute would be a practical value that approximates moderate intensity in adolescent females and can be used for physical activity interpretation and promotion.

Step Counts and Energy Expenditure as Estimated by Pedometry During Treadmill Walking at Different Stride Frequencies

2011 ◽  
Vol 8 (7) ◽  
pp. 1004-1013 ◽  
Author(s):  
Rishann Nielson ◽  
Pat R. Vehrs ◽  
Gilbert W. Fellingham ◽  
Ronald Hager ◽  
Keven A. Prusak
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Treadmill Walking ◽  
Moderate Intensity ◽  
Time Step ◽  
Step Counts ◽  
Moderate Intensity Physical Activity ◽  
Intensity Physical Activity ◽  
Physical Activity Recommendations ◽  
The Relationship

Background:The purposes of this study were to determine the accuracy and reliability of step counts and energy expenditure as estimated by a pedometer during treadmill walking and to clarify the relationship between step counts and current physical activity recommendations.Methods:One hundred males (n = 50) and females (n = 50) walked at stride frequencies (SF) of 80, 90, 100, 110, and 120 steps/min, during which time step counts and energy expenditure were estimated with a Walk4Life Elite pedometer.Results:The pedometer accurately measured step counts at SFs of 100, 110, and 120 steps/min, but not 80 and 90 steps/min. Compared with energy expenditure as measured by a metabolic cart, the pedometer significantly underestimated energy expenditure at 80 steps/min and significantly overestimated measured energy expenditure at 90, 100, 110, and 120 steps/ min.Conclusions:The pedometers’ inability to accurately estimate energy expenditure cannot be attributed to stride length entered into the pedometer or its ability to measure step counts. Males met 3 criteria and females met 2 criteria for moderate-intensity physical activity at SF of 110 to 120 steps/min. These results provide the basis for defining moderate-intensity physical activity based on energy expenditure and step counts and may lead to an appropriate steps/day recommendation.

Energy Expenditure in Vinyasa Yoga Versus Walking

2017 ◽  
Vol 14 (8) ◽  
pp. 597-605 ◽  
Author(s):  
Sally A. Sherman ◽  
Renee J. Rogers ◽  
Kelliann K. Davis ◽  
Ryan L. Minster ◽  
Seth A. Creasy ◽  
...  
Keyword(s):  
Public Health ◽  
Physical Activity ◽  
Energy Expenditure ◽  
Energy Cost ◽  
Vigorous Physical Activity ◽  
Treadmill Walking ◽  
Moderate Intensity ◽  
Moderate Intensity Physical Activity ◽  
Metabolic Equivalents ◽  
Intensity Physical Activity

Background:Whether the energy cost of vinyasa yoga meets the criteria for moderate-to-vigorous physical activity has not been established.Purpose:To compare energy expenditure during acute bouts of vinyasa yoga and 2 walking protocols.Methods:Participants (20 males, 18 females) performed 60-minute sessions of vinyasa yoga (YOGA), treadmill walking at a self-selected brisk pace (SELF), and treadmill walking at a pace that matched the heart rate of the YOGA session (HR-Match). Energy expenditure was assessed via indirect calorimetry.Results:Energy expenditure was significantly lower in YOGA compared with HR-Match (difference = 79.5 ± 44.3 kcal; P < .001) and SELF (difference = 51.7 ± 62.6 kcal; P < .001), but not in SELF compared with HR-Match (difference = 27.8 ± 72.6 kcal; P = .054). A similar pattern was observed for metabolic equivalents (HR-Match = 4.7 ± 0.8, SELF = 4.4 ± 0.7, YOGA = 3.6 ± 0.6; P < .001). Analyses using only the initial 45 minutes from each of the sessions, which excluded the restorative component of YOGA, showed energy expenditure was significantly lower in YOGA compared with HR-Match (difference = 68.0 ± 40.1 kcal; P < .001) but not compared with SELF (difference = 15.1 ± 48.7 kcal; P = .189).Conclusions:YOGA meets the criteria for moderate-intensity physical activity. Thus, YOGA may be a viable form of physical activity to achieve public health guidelines and to elicit health benefits.

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.

Abstract P063: The Association Between Physical Activity and Fasting and 2-Hour Glucose in US Adults: NHANES 2013-2014

Circulation ◽  
2018 ◽  
Vol 137 (suppl_1) ◽  
Author(s):  
Joshua R Sparks ◽  
Xuewen F Wang
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Plasma Glucose ◽  
Fasting Glucose ◽  
Glucose Disposal ◽  
Moderate Intensity ◽  
Moderate Intensity Physical Activity ◽  
Intensity Physical Activity ◽  
Vigorous Intensity ◽  
Activity Questionnaire

Background: Glucose concentrations in a fasted and during a glucose challenged state rely on different mechanisms for regulation. In a fasted state, hepatic regulation of glucose is important; while in a glucose challenged state, muscle glucose disposal becomes more important. Evidence suggests that physical activity of moderate or higher intensities can increase muscle glucose disposal during an insulin-stimulated state, but has less effect on hepatic insulin sensitivity. The purpose of this study was to examine the associations between glucose concentrations (fasting and after an oral glucose ingestion) and minutes of physical activity at moderate- and vigorous-intensity in a large population. Methods: The sample included 2,807 adults (47.4% male and 52.6% female) aged 18-80 years who participated in the National Health and Nutritional Examination Surveys (NHANES) from 2013-2014 and who did not take any diabetic medications. Minutes being physically active at moderate- and vigorous-intensities during work, and recreationally, were collected using the Physical Activity Questionnaire, which was based on the Global Physical Activity Questionnaire. Moderate-intensity physical activity was defined as any activity that caused a small increase in breathing or heart rate, while vigorous-intensity physical activity was defined as large increases in breathing or heart rate. Both intensities had to be performed for a minimum of 10 continuous minutes. Plasma glucose concentrations at fasting and 2 hours after consumption of a drink containing 75g glucose (2-hour glucose) were determined. Pearson product correlations were performed for analysis. Results: The population had 141±133 (mean±SD) minutes of moderate-intensity physical activity during work and 63±56 minutes recreationally, as well as 174±156 minutes of vigorous-intensity physical activity during work and 77±56 minutes recreationally. Minutes of vigorous-intensity physical activity performed during work was associated with 2-hour plasma glucose concentrations (r=0.15; p=0.045); this association was not affected after adjusting for age, race, and sex (p=0.049), but was no longer significant after BMI was also adjusted (p=0.059). Recreational or total minutes of vigorous-intensity physical activity, and moderate-intensity physical activity was not associated with 2-hour glucose (p>0.20). Additionally, none of the physical activity minutes was associated with fasting glucose (p>0.27). Conclusion: Self-reported vigorous-intensity physical activity during work was positively associated with 2-hour glucose, but not fasting glucose. The results are surprising. Further studies with objective physical activity measures are needed to examine the associations with fasting and 2-hour glucose.

Abstract 53: Changes in Physical Activity and Risk of Stroke in the California Teachers Study

Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Joshua Z Willey ◽  
Jenna Voutsinas ◽  
Ayesha Sherzai ◽  
Sophia S Wang ◽  
Leslie Bernstein ◽  
...  
Keyword(s):  
Physical Activity ◽  
Lower Risk ◽  
Leisure Time Physical Activity ◽  
Life Time ◽  
Moderate Intensity ◽  
Moderate Activity ◽  
Cox Models ◽  
Moderate Intensity Physical Activity ◽  
Strenuous Activity ◽  
Intensity Physical Activity

Introduction: Leisure time physical activity (LTPA) has been consistently associated with a lower risk of stroke across several populations. Less is known however about how changes over the life-time in physical activity may influence the risk of stroke. We examined the association of changes in engaging in moderate and strenuous physical activity with risk of stroke in the California Teachers Study. Methods: The California Teachers Study is a prospective cohort study established in 1995. Baseline LTPA was obtained using a questionnaire outlining time spent in moderate (brisk walking for example) and strenuous (swimming and running for example); the same questionnaire was repeated in 2005-6. We defined the exposure as engaging in any activity for at least 15 minutes per week (any) in the second questionnaire when not engaging in any on the first questionnaire, with the reference being no change or a decline in activity between both. Multi-variable Cox models were constructed to examine the association of the change in LTPA with risk of stroke. Separate models were created for moderate and strenuous activity. Results: There were a total of 61,256 participants with two LTPA questionnaires available separated by 10 years. A total of 3,111 participants increased their level of moderate activity, 11,744 remained active in both, 2,760 declined from the first to the second questionnaire, while 2,508 reported no activity in both. There were 987 (709 ischemic, 221 hemorrhagic, 247 deaths) strokes after the second questionnaires (mean follow up 6.5 years). In multi-variable models increasing any moderate intensity from none from the two questionnaires, versus no change or decline in activity, was associated with a lower risk of all stroke (adjusted HR 0.83, 95% CI 0.72-0.95). We found no associations of changes in strenuous LTPA with risk of stroke (adjusted HR 0.99, 95% CI 0.83-1.17). The associations were statistically significant for ischemic stroke (adjusted HR 0.75, 95% CI 0.64-0.89) but not hemorrhagic stroke (adjusted HR 0.94, 95% CI 0.72-1.25). Conclusion: Improving or maintaining moderate intensity physical activity is associated with a lower risk of stroke, while changes in strenuous activity is not.

scholarly journals Morning resolutions, evening disillusions: Theories of willpower affect how health behaviours change across the day

2020 ◽  
pp. 089020702096230
Author(s):  
Zoë Francis ◽  
Jutta Mata ◽  
Lavinia Flückiger ◽  
Veronika Job
Keyword(s):  
Physical Activity ◽  
Self Efficacy ◽  
Health Behaviours ◽  
Self Control ◽  
Moderate Intensity ◽  
Moderate Intensity Physical Activity ◽  
Health Goals ◽  
Health Goal ◽  
Intensity Physical Activity ◽  
Health Intentions

People may be more or less vulnerable to changes in self-control across the day, depending on whether they believe willpower is more or less limited. Limited willpower beliefs might be associated with steeper decreases in self-control across the day, which may result in less goal-consistent behaviour by the evening. Community members with health goals (Sample 1; N = 160; 1814 observations) and students (Sample 2; N = 162; 10,581 observations) completed five surveys per day for one to three weeks, reporting on their recent physical activity, snacking, subjective state, and health intentions. In both samples, more limited willpower beliefs were associated with less low- and moderate-intensity physical activity, particularly later in the day. Limited willpower beliefs were also associated with more snacking in the evenings (Sample 1) or overall (Sample 2). These behavioural patterns were mediated by differential changes in self-efficacy and intentions across the course of the day (in Sample 1), and the above patterns of low- and moderate-physical intensity held after controlling for related individual differences, including trait self-control and chronotype (in Sample 2). Overall, more limited willpower theories were associated with decreasing goal-consistent behaviour as the day progressed, alongside decreasing self-efficacy and weakening health-goal intentions.

scholarly journals FACTORS THAT CONTRIBUTE TO FALLS AMONG AL RESIDENTS

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S236-S236
Author(s):  
Marie Boltz
Keyword(s):  
Physical Activity ◽  
Data Analysis ◽  
Assisted Living ◽  
Secondary Data ◽  
Secondary Data Analysis ◽  
Moderate Intensity ◽  
Risk Of Falling ◽  
Moderate Intensity Physical Activity ◽  
Intensity Physical Activity ◽  
Using Data

Abstract Many nurses, patients, and families continue to believe that physical activity increases the risk of falling. The purpose of this study was to test the hypothesis that residents who are exposed to Function Focused Care for Assisted Living (FFC-AL-EIT) and engage in moderate levels of physical activity would not be more likely to fall. This was a secondary data analysis using data from the first two cohorts of the FFC-AL-EIT study. The study included 508 residents the majority of whom were female (70%), white (97%), with a mean age of 87.72 (SD=7.47). Those who engaged in more moderate intensity physical activity were 1% less likely to fall (b = -.01, Wald =6.13, p =.01). There was no association between exposure to function focused care and falling (Beta =.41, Wald =2.35, p=.13). Further, engaging in moderate level physical activity was noted to be slightly protective of falling.

Sign in / Sign up

Export Citation Format

Share Document