Kettlebell Swings and Paraspinal Muscle Function

Exercise Training Clinical Trial

Official title:

The Immediate Effects of a Standardized Kettlebell Swing Protocol on Lumbar Paraspinal Muscle Function

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT06069271
• Other study ID #: 00001277
• Status: Completed
• Phase: N/A
• Start date: March 4, 2020
• Est. completion date: January 15, 2023

Study information

• Verified date: September 2023
• Source: University of Central Florida
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this randomized control trial is to determine the extent of muscle fatigue in the lumbar erector spinae musculature secondary to a high-intensity interval kettlebell swing protocol utilizing TMG previously published by Jay et. al in 2011.

Description:

Background: Kettlebell swings are commonly utilized to target the lumbar erector spinae and lower body musculature. This exercise exhibits distinct loading properties that requires cyclical contraction of the trunk extensors and posterior chain, potentially explaining its novel influence on muscle contractility. Tensiomyography (TMG) is a reliable, noninvasive, passive technique that may be used to examine muscular fatigue produced by kettlebell swings. Purpose: The purpose of this randomized control trial is to determine the extent of muscle fatigue in the lumbar erector spinae musculature secondary to a high-intensity interval kettlebell swing protocol utilizing TMG previously published by Jay et. al in 2011. Subjects: Forty-one adults between the ages of 18 and 45 were recruited. Inclusion criteria included subjects with no recent history of low back pain and clearance by the physical activity readiness questionnaire. Methods: Participants were randomly allocated to either a kettlebell swing group (KBS; n=21) or a control group (CON; n=20) who only performed the unloaded warm up. Participants were assessed at baseline, post-intervention, and 24-hours post-intervention for bilateral erector spinae fatigue, measured by five TMG parameters (Dm, Tc, Tr, Td, Ts).

Recruitment information / eligibility

• Status: Completed
• Enrollment: 41
• Est. completion date: January 15, 2023
• Est. primary completion date: March 8, 2022
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 45 Years

Eligibility

Inclusion Criteria:

• Ages of 18 and 45 years of age.

• Clear PAR-Q

Exclusion Criteria:

• history of low back pain

• pre-existing injuries

• If "YES" was the response to any of the seven questions in the PAR-Q, the participant was deemed to be unable to exercise safely.

Related Conditions & MeSH terms

• Exercise Training

Intervention

Other:
• Kettlebell swing
The intervention group completed two-handed Russian KBSs using an interval training protocol outlined by Jay et al.10 involving 30 seconds of work followed by 30 seconds of rest for 10 total intervals. Prior to completing the intervention, participants completed a general warmup consisting of 10 non-weighted squats, 10 non-weighted dead-lifts, and 10 dowel rod shoulder flexion repetitions. Participants were instructed to perform all warm-up activities at an intensity of 70% of maximal effort using a Rate of Perceived Exertion scale(RPE).

Locations

Country	Name	City	State
United States	University of Central Florida	Orlando	Florida

Sponsors (1)

Lead Sponsor	Collaborator
University of Central Florida

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Tensiomyography	Research has progressed to support the test-retest and inter-rater reliability using TMG for measurement of muscle contraction. TMG demonstrates good to excellent relative reliability(0.80-0.99) and inter-rater ICC between 0.77-0.97 Across all five TMG parameters.4-7	Baseline, immediate after exercise, 24 hours after exercise