Abstract:
PURPOSE:The objective of this study is to determine the effect of body mass index (BMI) on level of agreement between six previously established prediction equations for three commonly used accelerometers to predict summary measures of energy expenditure (EE) in youth. METHODS:One hundred and thirty-one youth between the ages of 10-17 yr and BMI from 15 to 44 kg·m were outfitted with hip-worn ActiGraph GT1M (Pensacola, FL), Actical (MiniMiter/Respironics, Bend, OR), and RT3 (StayHealthy, Monrovia, CA) accelerometers and spent approximately 24 h in a whole-room indirect calorimeter while performing structured and self-selected activities. Five commonly used regression and one propriety equations for each device were used to predict the minute-to-minute EE (normalized to METs), daily physical activity level (PAL), and time spent in sedentary, light, moderate, and vigorous physical activity intensity categories. The calculated values were compared with criterion measurements obtained from the room calorimeter. RESULTS:All predictive equations, except RT3, significantly over- or underpredicted daily PAL (P < 0.001), with large discrepancies observed in the estimate of sedentary and light activity. Discrepancies between actual and estimated PAL ranged from 0.05 to 0.68. In addition, BMI represented a modifier for two ActiGraph predictive equations (AG1 and AG2), affecting the accuracy of physical activity-related EE predictions. CONCLUSION:ActiGraph (AG3) and the RT3 closely predicted overall PAL (within 4.2% and 6.8%, respectively) as a group. When adjusting for age, sex, and ethnicity, Actical (AC1 and AC2) and ActiGraph (AG3) were not influenced by BMI. However, a gap between some hip-worn accelerometer predictive and regression equations was demonstrated compared with both criterion measurement and each other, which poses a potential difficulty for interstudy (e.g., different accelerometers) and intrastudy (e.g., BMI and adiposity) comparisons.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Warolin J,Carrico AR,Whitaker LE,Wang L,Chen KY,Acra S,Buchowski MSdoi
10.1249/MSS.0b013e318267b8f1subject
Has Abstractpub_date
2012-12-01 00:00:00pages
2428-35issue
12eissn
0195-9131issn
1530-0315journal_volume
44pub_type
杂志文章abstract:UNLABELLED:Although effects of workload and cadence on sagittal plane knee biomechanics in cycling have been widely studied, few studies have examined their impact on the frontal plane. PURPOSE:The purpose of this study was to investigate the effects of different workloads and cadences on knee sagittal and frontal pla...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,随机对照试验
doi:10.1249/MSS.0000000000000759
更新日期:2016-02-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e31821ece12
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-200102000-00009
更新日期:2001-02-01 00:00:00
abstract::Twelve college-age men exercised on a bicycle ergometer to VO2max and at 60, 70, and 80% VO2max for 30 min to determine the effects of exercise intensity on plasma beta-endorphin (B-EP). The time course for alterations in B-EP and the relationship to lactate were also examined. Following the VO2max test, the three sub...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:1990-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:10.1249/MSS.0b013e3182399bc8
更新日期:2012-01-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:10.1249/00005768-198810001-00017
更新日期:1988-10-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
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更新日期:2008-12-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000000301
更新日期:2014-09-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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更新日期:1993-08-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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更新日期:2016-11-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e318290c28a
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0000000000001195
更新日期:2017-05-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/00005768-198201000-00012
更新日期:1982-01-01 00:00:00
abstract:INTRODUCTION:Arterialization of venous gas emboli (VGE) formed after surfacing from SCUBA diving can become arterial gas emboli (AGE) through intrapulmonary arterial-venous anastomoses that open with exercise. METHODS:We recruited twenty patent foramen ovale-negative SCUBA divers and conducted a field and a laboratory...
journal_title:Medicine and science in sports and exercise
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doi:10.1249/MSS.0000000000000625
更新日期:2015-09-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
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doi:10.1097/00005768-200204000-00010
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199602000-00013
更新日期:1996-02-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:10.1097/00005768-200108000-00009
更新日期:2001-08-01 00:00:00
abstract::Due to the invasiveness of direct techniques and problems that constrain the use of popular indirect techniques during very heavy (non-steady-state) exercise, measurements of maximal cardiac output are seldom included in studies of exercise. The acetylene-rebreathing technique is well-suited for maximal exercise; howe...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/00005768-198410000-00016
更新日期:1984-10-01 00:00:00
abstract:INTRODUCTION:Recent data indicate a direct relationship between the sympathetic nervous system and bone metabolism. The purpose of this study was to evaluate the effects of a beta-1 adrenergic (Adrb1) agonist, dobutamine (DOB), on disuse-induced changes in bone integrity during 28 d of hindlimb unloading (HU). METHODS...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e31828d39bc
更新日期:2013-09-01 00:00:00
abstract::The purpose of the study was to evaluate selected parameters describing performance characteristics of a free-weight and isokinetic bench press. A secondary purpose was an attempt to clarify the technique requirements essential for a successful lift. Parameters describing the free-weight condition were generated from ...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1985-06-01 00:00:00
abstract::The purpose of this study was to determine the effects of different volumes of high-intensity resistance training on isometric torque and muscle thickness. Training was conducted three times per week using one set (low volume, EX-1, N = 18) or three sets (high volume, EX-3, N = 20) of dynamic variable resistance exerc...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199610000-00016
更新日期:1996-10-01 00:00:00
abstract:INTRODUCTION:Exercise with limb blood flow restriction (BFR) is a very popular exercise modality in Japan and is spreading widely to the rest of the world. The underlying principle of this training modality is that under the conditions of restricted blood flow, even low-intensity exercise can provide significant muscle...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2010-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,随机对照试验
doi:10.1249/MSS.0b013e3181659c4d
更新日期:2008-05-01 00:00:00
abstract::Cellular oxidants include a variety of reactive oxygen, nitrogen, and chlorinating species. It is well established that the increase in metabolic rate in skeletal muscle during contractile activity results in an increased production of oxidants. Failure to remove these oxidants during exercise can result in significan...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:10.1097/00005768-199907000-00011
更新日期:1999-07-01 00:00:00
abstract:PURPOSE:To evaluate the effects of physical activity on bone mineral density, bone mineral content, and lean mass in postmenopausal, overweight/obese women. METHODS:We conducted a 12-month randomized controlled aerobic exercise intervention versus control in 173 sedentary, overweight/obese, postmenopausal women, aged ...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,随机对照试验
doi:10.1249/01.mss.0000227308.11278.d7
更新日期:2006-07-01 00:00:00