PMID- 36438579
OWN - NLM
STAT- MEDLINE
DCOM- 20230123
LR  - 20230124
IS  - 2167-8359 (Print)
IS  - 2167-8359 (Electronic)
IS  - 2167-8359 (Linking)
VI  - 10
DP  - 2022
TI  - Reliability of kettlebell swing one and five repetition maximum.
PG  - e14370
LID - 10.7717/peerj.14370 [doi]
LID - e14370
AB  - BACKGROUND: Research into the kettlebell swing has increased in the last decade. 
      There has been a paucity of literature assessing an individual's ability to 
      perform the kettlebell swing exercise. The purpose of this study was to determine 
      the test-retest reliability of the one and five repetition maximum (1RM and 5RM) 
      kettlebell swing. MATERIALS & METHODS: Twenty four recreational 
      resistance-trained participants performed an isometric mid-thigh pull (IMTP) and 
      two familiarization sessions followed by three test sessions for each RM load 
      approximately one week apart, using a custom-built plate-loaded kettlebell. On 
      each test occasion, subjects completed a series of warm-up sets followed by 3-4 
      progressively heavier kettlebell swings to a standardized height until 1RM or 5RM 
      was reached. Test-retest reliability was calculated using the intra-class 
      correlation (ICC) and typical error was represented as the coefficient of 
      variation (CV%) with 90% confidence limits (90% CL). The smallest worthwhile 
      change (SWC%) representing the smallest change of practical importance, was 
      calculated as 0.2 x between-subject standard deviation. The relationship of 
      kettlebell swing performance and maximum strength was determined by Pearson 
      correlation with +/-90% CL between the absolute peak force recorded during IMTP and 
      1RM or 5RM. RESULTS: Results demonstrated a high test-retest reliability for both 
      the 1RM (ICC = 0.97, 90% CL [0.95-0.99]; CV = 2.7%, 90% CL [2.2-3.7%]) and 5RM 
      (ICC = 0.98, 90% CL [0.96-0.99]; CV = 2.4%, 90% CL [1.9-3.3%]), respectively. The 
      CV% was lower than the SWC for both the 1RM (SWC = 2.8%, 90% CL [1.9-3.5]) and 
      5RM (SWC = 2.9%, 90% CL [1.9-3.6]) kettlebell swing. The correlation between IMTP 
      absolute peak force and the 1RM (r = 0.69, 90% CL 0.43-0.83) was large and very 
      large for the 5RM (r = 0.75, 90% CL [0.55-0.87]). CONCLUSIONS: These results 
      demonstrate the stability of 1RM and 5RM kettlebell swing performance after two 
      familiarization sessions. Practitioners can be confident that changes in 
      kettlebell swing 1RM and 5RM performance of >3.6 kg represent a practically 
      important difference, which is the upper limit of the 90% CL.
CI  - (c) 2022 Ross et al.
FAU - Ross, James A
AU  - Ross JA
AD  - School of Behavioural and Health Sciences, Australian Catholic University, 
      Melbourne, Victoria, Australia.
FAU - Keogh, Justin W L
AU  - Keogh JWL
AUID- ORCID: 0000-0001-9851-1068
AD  - Faculty of Health Sciences and Medicine, Institute of Health & Sport, Bond 
      University, Gold Coast, Queensland, Australia.
AD  - Manipal Academy of Higher Education Mangalore, Kasturba Medical College, Manipal, 
      Karnataka, India.
AD  - Sports Performance Research Centre New Zealand, AUT University, Auckland, New 
      Zealand.
FAU - Lorenzen, Christian
AU  - Lorenzen C
AD  - School of Behavioural and Health Sciences, Australian Catholic University, 
      Melbourne, Victoria, Australia.
LA  - eng
PT  - Journal Article
DEP - 20221121
PL  - United States
TA  - PeerJ
JT  - PeerJ
JID - 101603425
MH  - Humans
MH  - Reproducibility of Results
MH  - *Muscle Strength
MH  - *Exercise Test/methods
MH  - Thigh
MH  - Lower Extremity
PMC - PMC9686413
OTO - NOTNLM
OT  - 1RM
OT  - 5RM
OT  - Exercise
OT  - Resistance training
OT  - Strength training
OT  - Test-retest
COIS- Justin Keogh is an Academic Editor for PeerJ. The authors declare no other 
      competing interests associated with the publication of this article.
EDAT- 2022/11/29 06:00
MHDA- 2022/11/29 06:01
PMCR- 2022/11/21
CRDT- 2022/11/28 04:19
PHST- 2022/07/08 00:00 [received]
PHST- 2022/10/19 00:00 [accepted]
PHST- 2022/11/28 04:19 [entrez]
PHST- 2022/11/29 06:00 [pubmed]
PHST- 2022/11/29 06:01 [medline]
PHST- 2022/11/21 00:00 [pmc-release]
AID - 14370 [pii]
AID - 10.7717/peerj.14370 [doi]
PST - epublish
SO  - PeerJ. 2022 Nov 21;10:e14370. doi: 10.7717/peerj.14370. eCollection 2022.