In:
Journal of Strength and Conditioning Research, Ovid Technologies (Wolters Kluwer Health), Vol. 32, No. 6 ( 2018-06), p. 1491-1502
Abstract:
Ratamess, NA, Kang, J, Kuper, JD, O'Grady, EA, Ellis, NL, Vought, IT, Culleton, E, Bush, JA, and Faigenbaum, AD. Acute cardiorespiratory and metabolic effects of a sandbag resistance exercise protocol. J Strength Cond Res 32(6): 1491–1502, 2018—The purpose of this study was to examine the acute cardiorespiratory and metabolic effects of a sandbag (SB) resistance exercise protocol and compare the responses to time-matched treadmill running protocols. Eight healthy, resistance-trained men (21.1 ± 1.0 years; 86.1 ± 7.8 kg) completed 4 protocols of equal duration in random sequence: (a) SB, (b) treadmill running at 60% of V̇ o 2 reserve (60V̇ o 2 R), (c) treadmill running at 80% of V̇ o 2 reserve (80V̇ o 2 R), and (d) a control protocol. The SB protocol was 16 minutes in duration and consisted of 3 circuits of 8 multiple-joint exercises (with 11-, 20-, or 48-kg SBs) performed for as many repetitions as possible for 20 seconds followed by a 10-second rest interval before beginning the next exercise. Two minutes of rest was allowed between circuits. Breath-by-breath oxygen consumption (V̇ o 2 ) and heart rate (HR) were recorded throughout each protocol and for 30 minutes postexercise (PE) and blood lactate was determined before and immediately after each protocol. Blood lactate was significantly higher after SB compared with 60V̇ o 2 R and 80V̇ o 2 R. Mean and peak HR in SB was significantly higher than 60V̇ o 2 R but not different from 80V̇ o 2 R. Mean V̇ o 2 and energy expenditure (EE) in SB was significantly lower than 60V̇ o 2 R and 80V̇ o 2 R during each protocol but significantly higher after SB compared with 60V̇ o 2 R and 80V̇ o 2 R PE. Compared with 60V̇ o 2 R and 80V̇ o 2 R, respiratory exchange ratio was significantly higher during SB and through 5 minutes PE, but was significantly lower at 25–30 minutes PE after SB. Sandbag, as performed in this study, provides a superior metabolic stimulus to treadmill running during the PE period; however, the SB results demonstrate inferior EE compared with running at 60V̇ o 2 R and 80V̇ o 2 R.
Type of Medium:
Online Resource
ISSN:
1064-8011
DOI:
10.1519/JSC.0000000000002415
Language:
English
Publisher:
Ovid Technologies (Wolters Kluwer Health)
Publication Date:
2018
detail.hit.zdb_id:
1156349-7
SSG:
31
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