Acute Hormonal Response to Kettlebell Swing Exercise Differs Depending on Load, Even When Total Work Is Normalized

Leanne Raymond; Derek Renshaw; Michael Duncan

doi:10.1519/JSC.0000000000002862

Acute Hormonal Response to Kettlebell Swing Exercise Differs Depending on Load, Even When Total Work Is Normalized

Leanne Raymond, Derek Renshaw, Michael Duncan

School of Life Sciences

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

213 Downloads (Pure)

Abstract

ABSTRACT: Raymond, LM, Renshaw, D, and Duncan, MJ. Acute hormonal response to kettlebell swing exercise differs depending on load, even when total work is normalized. J Strength Cond Res 35(4): 997-1005, 2021-This study examined the acute hormonal response to kettlebell (KB) swing exercise using 2 loads, but when total work was equalized. Ten strength-trained males (25 ± 6 years) completed 2 KB swing trials, with an 8- and 16-kg KB, respectively, in a counterbalanced order. Each protocol lasted 12 minutes comprising 30-second KB swings followed by 30-second rest. Swing cadence was manipulated in each trial to ensure that total weight lifted was the same across conditions. Heart rate (HR) and ratings of perceived exertion (RPE), using the Borg RPE scale 6-20, were taken at the end of each 30-second exercise period. Saliva samples (min 0.5 ml) were taken 15 minutes before, immediately after, and 15 and 30 minutes after each condition from which cortisol (C) and testosterone (T) were determined. Results indicated a significant main effect for load for C (p = 0.007) and T (p = 0.05) where higher values for both C and T were evident for the 16-kg load. There was also a significant main effect for time for T (p = 0.001), where T values were all significantly higher post-exercise compared with pre-exercise. For HR, there were significant main effects for load (p = 0.004) and time (p = 0.001) with higher HR seen in 16-kg load and significant increases in HR evident with increasing repetition, irrespective of condition (all p < 0.05). Rating of perceived exertion values increased with repetition for the 8-kg and 16-kg loads, but the increase was more marked for the 16-kg load compared with the 8-kg load (p = 0.002). The present findings suggest that KB swing exercise produces an acute increase in hormones involved in muscle adaptation, but that KB load influences this response, even when total work completed is the same.

Original language	English
Pages (from-to)	997-1005
Number of pages	9
Journal	Journal of Strength and Conditioning Research
Volume	35
Issue number	4
Early online date	28 Sept 2018
DOIs	https://doi.org/10.1519/JSC.0000000000002862
Publication status	Published - 1 Apr 2021

Bibliographical note

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

Keywords

Testosterone
cortisol
nterval exercise
endocrine

ASJC Scopus subject areas

Physical Therapy, Sports Therapy and Rehabilitation
Orthopedics and Sports Medicine

Access to Document

10.1519/JSC.0000000000002862

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Cite this

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title = "Acute Hormonal Response to Kettlebell Swing Exercise Differs Depending on Load, Even When Total Work Is Normalized",

abstract = "ABSTRACT: Raymond, LM, Renshaw, D, and Duncan, MJ. Acute hormonal response to kettlebell swing exercise differs depending on load, even when total work is normalized. J Strength Cond Res 35(4): 997-1005, 2021-This study examined the acute hormonal response to kettlebell (KB) swing exercise using 2 loads, but when total work was equalized. Ten strength-trained males (25 ± 6 years) completed 2 KB swing trials, with an 8- and 16-kg KB, respectively, in a counterbalanced order. Each protocol lasted 12 minutes comprising 30-second KB swings followed by 30-second rest. Swing cadence was manipulated in each trial to ensure that total weight lifted was the same across conditions. Heart rate (HR) and ratings of perceived exertion (RPE), using the Borg RPE scale 6-20, were taken at the end of each 30-second exercise period. Saliva samples (min 0.5 ml) were taken 15 minutes before, immediately after, and 15 and 30 minutes after each condition from which cortisol (C) and testosterone (T) were determined. Results indicated a significant main effect for load for C (p = 0.007) and T (p = 0.05) where higher values for both C and T were evident for the 16-kg load. There was also a significant main effect for time for T (p = 0.001), where T values were all significantly higher post-exercise compared with pre-exercise. For HR, there were significant main effects for load (p = 0.004) and time (p = 0.001) with higher HR seen in 16-kg load and significant increases in HR evident with increasing repetition, irrespective of condition (all p < 0.05). Rating of perceived exertion values increased with repetition for the 8-kg and 16-kg loads, but the increase was more marked for the 16-kg load compared with the 8-kg load (p = 0.002). The present findings suggest that KB swing exercise produces an acute increase in hormones involved in muscle adaptation, but that KB load influences this response, even when total work completed is the same.",

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N2 - ABSTRACT: Raymond, LM, Renshaw, D, and Duncan, MJ. Acute hormonal response to kettlebell swing exercise differs depending on load, even when total work is normalized. J Strength Cond Res 35(4): 997-1005, 2021-This study examined the acute hormonal response to kettlebell (KB) swing exercise using 2 loads, but when total work was equalized. Ten strength-trained males (25 ± 6 years) completed 2 KB swing trials, with an 8- and 16-kg KB, respectively, in a counterbalanced order. Each protocol lasted 12 minutes comprising 30-second KB swings followed by 30-second rest. Swing cadence was manipulated in each trial to ensure that total weight lifted was the same across conditions. Heart rate (HR) and ratings of perceived exertion (RPE), using the Borg RPE scale 6-20, were taken at the end of each 30-second exercise period. Saliva samples (min 0.5 ml) were taken 15 minutes before, immediately after, and 15 and 30 minutes after each condition from which cortisol (C) and testosterone (T) were determined. Results indicated a significant main effect for load for C (p = 0.007) and T (p = 0.05) where higher values for both C and T were evident for the 16-kg load. There was also a significant main effect for time for T (p = 0.001), where T values were all significantly higher post-exercise compared with pre-exercise. For HR, there were significant main effects for load (p = 0.004) and time (p = 0.001) with higher HR seen in 16-kg load and significant increases in HR evident with increasing repetition, irrespective of condition (all p < 0.05). Rating of perceived exertion values increased with repetition for the 8-kg and 16-kg loads, but the increase was more marked for the 16-kg load compared with the 8-kg load (p = 0.002). The present findings suggest that KB swing exercise produces an acute increase in hormones involved in muscle adaptation, but that KB load influences this response, even when total work completed is the same.

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Acute Hormonal Response to Kettlebell Swing Exercise Differs Depending on Load, Even When Total Work Is Normalized

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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