Errors in MET Estimates of Physical Activities Using 3.5 ml·kg−1·min−1 as the Baseline Oxygen Consumption

Kozey, Sarah L.; Lyden, Kate; Staudenmayer, John; Freedson, Patty S.

doi:10.1123/jpah.7.4.508

Cited by 107 publications

(111 citation statements)

References 36 publications

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“…To account for missing data during these times, participants were required to register all non-wear periods (the activity, time and duration) in a diary [37]. Appropriate Metabolic Equivalent (MET) values from the Compendium of Physical Activities [38] were assigned to these reported activities, and were subsequently corrected to account for individual variation [39]. Corrected METs were used to estimate non-wear energy expenditure [38].…”

Section: Energy Expenditurementioning

confidence: 99%

Energy Intake and Energy Expenditure of Pre-professional Female Contemporary Dancers

Brown

Howatson

Quin

et al. 2016

Medicine & Science in Sports & Exercise

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Many athletes in aesthetic and weight dependent sports are at risk of energy imbalance. However little is known about the exercise and eating behaviours of highly trained dance populations. This investigation sought to determine the energy intake and energy expenditure of pre-professional female contemporary dancers. Twenty-five female contemporary dance students completed the study. Over a 7-day period, including five week days (with scheduled dance training at a conservatoire) and two weekend days (with no scheduled dance training at the conservatoire), energy intake (self-reported weighed food diary and 24 h dietary recall) and expenditure (tri-axial accelerometry) were recorded. Mean daily energy intake and expenditure were different over the 7-day period (P = 0.014) equating to an energy deficit of -356 ± 668 kcalÁday -1 (or -1.5 ± 2.8 MJÁday -1 ). Energy expenditure was not different when comparing week and weekend days (P = 0.297). However daily energy intake (P = 0.002), energy availability (P = 0.003), and energy balance (P = 0.004) were lower during the week compared to the weekend, where energy balance became positive. The percentage contribution of macronutrients to total energy intake also differed; with higher fat (P = 0.022) and alcohol (P = 0.020), and lower carbohydrate (P = 0.001) and a trend for lower protein (P = 0.051) at the weekend. Energy balance and appropriate macronutrient intake are essential for maintaining the demands of training, performance and recovery. Whilst aesthetics are important, female contemporary dancers may be at risk of the numerous health and performance impairments associated with negative energy balance, particularly during periods of scheduled training.

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Section: Energy Expenditurementioning

confidence: 99%

Energy Intake and Energy Expenditure of Pre-professional Female Contemporary Dancers

Brown

Howatson

Quin

et al. 2016

Medicine & Science in Sports & Exercise

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“…Mean intensity of the activities was also expressed as an estimated number of METs; 1 MET is generally assumed to be 3.5 ml · min -1 · kg -1 (Ainsworth et al, 2000), but due to the high age of participants this resting metabolic rate is probably overestimated (Kozey, Lyden, Staudenmayer, & Freedson, 2010). Therefore, the Harris-Benedict equation (Harris & Benedict, 1918) was used to estimate the resting metabolic rate as recommended recently for this age group (Kozey et al, 2010); for men the resting metabolic rate in kilocalories per day is 66.4730 + 5.0033 × height (cm) + 13.7516 × weight (kg) -6.7550 × age (years), and for women it is 655.0955 + 1.8496 × height (cm) + 9.5634 × weight (kg) -4.6756 × age (years).…”

Section: Outcome Variablesmentioning

confidence: 99%

“…Therefore, the Harris-Benedict equation (Harris & Benedict, 1918) was used to estimate the resting metabolic rate as recommended recently for this age group (Kozey et al, 2010); for men the resting metabolic rate in kilocalories per day is 66.4730 + 5.0033 × height (cm) + 13.7516 × weight (kg) -6.7550 × age (years), and for women it is 655.0955 + 1.8496 × height (cm) + 9.5634 × weight (kg) -4.6756 × age (years).…”

Section: Outcome Variablesmentioning

confidence: 99%

The Intensity of Chair-Assisted Exercises in Cognitively Healthy Older Adults

Volkers

Eggermont

et al. 2013

Journal of Aging and Physical Activity

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Introduction:The American College of Sports Medicine prescribes regular performance of at least moderate-intensity physical activity for healthy aging. This study examined whether 1 session of 30 min of chair-assisted exercises for the elderly meets this intensity criterion.Method:This cross-sectional study included 47 cognitively healthy volunteers (mean age 84 years). During the performance of 30 min of chair-assisted exercises the authors determined oxygen uptake (VO2), carbon dioxide production, heart rate (HR), and rating of perceived exertion (RPE). These measures were expressed as a percentage of the estimated maximal VO2 (VO2max) and the estimated maximal HR (HRmax) and estimated as metabolic equivalent units (METs).Results:Participants performed chair-assisted exercises at 61.0% ± 14.7% of VO2max, 67.6% ± 11.3% HRmax, 3.9 ± 0.9 METs, and 13.1 ± 2.1 RPE.Conclusions:The intensity of these chair-assisted exercises is at least moderate for older adults, which is necessary for healthy aging.

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“…However, the values in the Compendium do not take into account specific variables such as age, sex or body mass among others. Given all that, it is advisable for further studies to adjust the obtained MET values by following the guidelines proposed by some authors [10,28].…”

Section: Classification According To Pa Levelmentioning

confidence: 99%

Methodological issues when analysing the role of physical activity in gastric cancer prevention: a critical review

Ayán

Molina

Fernández

et al. 2012

Eur Rev Aging Phys Act

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The beneficial effect of physical activity (PA) has been confirmed in several types of cancer (especially colon and breast tumours). However, the role of PA as a risk factor directly related to the incidence of gastric cancer is still open to doubt. This is in part due to the fact that most studies have not considered gastric sub-site or histology of oesophageal cancer, as well as the different approaches used in order to measure PA. Indeed, some studies have tried to link gastric cancer to PA intensity and timing, whereas others have focused on a specific PA type such as recreational, occupational or sporting activity. Furthermore, most of them do not use validated questionnaires, and others create a PA index and employ different unit measures (metabolic equivalents, hours/week, times per week, etc.), which makes it difficult to compare its findings. Under these circumstances, this brief critical review aims to explore and show all the methodological issues that need to be taken into account in order to objectify the link between PA and gastric cancer, as well as provide alternative solutions to these matters.

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Errors in MET Estimates of Physical Activities Using 3.5 ml·kg−1·min−1 as the Baseline Oxygen Consumption

Cited by 107 publications

References 36 publications

Energy Intake and Energy Expenditure of Pre-professional Female Contemporary Dancers

Energy Intake and Energy Expenditure of Pre-professional Female Contemporary Dancers

The Intensity of Chair-Assisted Exercises in Cognitively Healthy Older Adults

Methodological issues when analysing the role of physical activity in gastric cancer prevention: a critical review

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