Document Detail

Comparison of Kettlebell Swings and Treadmill Running at Equivalent RPE Values.
MedLine Citation:
PMID:  22395274     Owner:  NLM     Status:  Publisher    
The purpose of this study was to compare metabolic demand of a kettlebell (KB) swing routine to treadmill (TM) running at equivalent rating of perceived exertion (RPE). Thirteen subjects (11 M, 2 F, age = 21.4 ± 2.1 y, weight = 73.0 ± 9.2 kg) completed a 10-min KB swing routine consisting of 35-s swing intervals followed by 25-s rest intervals. Men used a 16-kg KB, and women used an 8-kg KB. Following 48 hrs rest, subjects completed a 10-min TM run at equivalent RPEs as measured during the swing workout. Metabolic data were monitored each minute during each exercise using an automated cart, with the final 7 minutes used for analysis. RPE and heart rate (HR) recorded at minutes 5, 7, 9, and 10 increased by 2-3% and 7-9%, respectively, for each exercise, producing a significantly increasing pattern but no significant difference between exercises. Average HR and RPE were not significantly different between KB and TM and averaged 90% and 89%, respectively, of age-predicted HRmax. Oxygen consumption, METS, pulmonary ventilation, and calorie expenditure were significantly higher for TM (25-39%) than for KB. Respiratory exchange ratio (TM = 0.94 ± 0.04, KB = 0.95 ± 0.05) and respiratory rate (TM = 38 ± 7, KB = 36 ± 4 bpm) were not significantly different between the exercises at any time point. During TM and KB exercises matched for RPE, subjects are likely to have higher oxygen consumption, work at a higher MET level, and burn more Kcal/min during TM running than during KB swings. However, according to ACSM standards, this KB drill could provide sufficient exercise stress to produce gains in aerobic capacity.
Caleb R Husley; David T Soto; Alexander J Koch; Jerry L Mayhew
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-03
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
1Human Performance Laboratory, Truman State University, Kirksville, Missouri, 2Health and Exercise Science Program, Lenoir-Rhyne University, Hickory, North Carolina; 3Physiology Department, A.T. Still University of Health Sciences, Kirksville, Missouri.
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