The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump Performance
The purpose of the present study was to examine the effects of a back squat exercise with unstable load (UN) and traditional free-weight resistance (FWR) on subsequent countermovement jump (CMJ) performance. After familiarisation, thirteen physically active males with experience in resistance traini...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Journal of Functional Morphology and Kinesiology |
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| Online Access: | https://www.mdpi.com/2411-5142/8/4/167 |
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| author | Renata Jirovska Anthony D. Kay Themistoklis Tsatalas Alex J. Van Enis Christos Kokkotis Giannis Giakas Minas A. Mina |
| author_facet | Renata Jirovska Anthony D. Kay Themistoklis Tsatalas Alex J. Van Enis Christos Kokkotis Giannis Giakas Minas A. Mina |
| author_sort | Renata Jirovska |
| collection | DOAJ |
| description | The purpose of the present study was to examine the effects of a back squat exercise with unstable load (UN) and traditional free-weight resistance (FWR) on subsequent countermovement jump (CMJ) performance. After familiarisation, thirteen physically active males with experience in resistance training visited the laboratory on two occasions during either experimental (UN) or control (FWR) conditions separated by at least 72 h. In both sessions, participants completed a task-specific warm-up routine followed by three maximum CMJs (pre-intervention; baseline) and a set of three repetitions of either UN or FWR back squat exercise at 85% 1-RM. During the UN condition, the unstable load was suspended from the bar with elastic bands and accounted for 15% of the total load. Post-intervention, three maximum CMJs were performed at 30 s, 4 min, 8 min and 12 min after the last repetition of the intervention. The highest CMJ for each participant was identified for each timepoint. No significant increases (<i>p</i> > 0.05) in jump height, peak concentric power, or peak rate of force development (RFD) were found after the FWR or UN conditions at any timepoint. The lack of improvements following both FWR and UN conditions may be a consequence of the low percentage of unstable load and the inclusion of a comprehensive task-specific warm-up. Further research is required to explore higher UN load percentages (>15%) and the chronic effects following the implementation of a resistance training programme. |
| first_indexed | 2024-03-08T20:38:49Z |
| format | Article |
| id | doaj.art-5b3a0642c93d400e9c372f0c5722889e |
| institution | Directory Open Access Journal |
| issn | 2411-5142 |
| language | English |
| last_indexed | 2024-03-08T20:38:49Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Functional Morphology and Kinesiology |
| spelling | doaj.art-5b3a0642c93d400e9c372f0c5722889e2023-12-22T14:18:07ZengMDPI AGJournal of Functional Morphology and Kinesiology2411-51422023-12-018416710.3390/jfmk8040167The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump PerformanceRenata Jirovska0Anthony D. Kay1Themistoklis Tsatalas2Alex J. Van Enis3Christos Kokkotis4Giannis Giakas5Minas A. Mina6Department of Sport, Outdoor and Exercise Science, School of Human Sciences & Human Sciences Research Centre, University of Derby, Kedleston Road, Derby DE22 1GB, UKSport, Exercise & Life Sciences, University of Northampton, Northampton NN1 5PH, UKDepartment of Physical Education and Sport Science, University of Thessaly, Karyes, 42100 Trikala, GreeceDepartment of Sport, Outdoor and Exercise Science, School of Human Sciences & Human Sciences Research Centre, University of Derby, Kedleston Road, Derby DE22 1GB, UKDepartment of Physical Education and Sport Science, Democritus University of Thrace, 69100 Komotini, GreeceDepartment of Physical Education and Sport Science, University of Thessaly, Karyes, 42100 Trikala, GreeceDepartment of Sport, Outdoor and Exercise Science, School of Human Sciences & Human Sciences Research Centre, University of Derby, Kedleston Road, Derby DE22 1GB, UKThe purpose of the present study was to examine the effects of a back squat exercise with unstable load (UN) and traditional free-weight resistance (FWR) on subsequent countermovement jump (CMJ) performance. After familiarisation, thirteen physically active males with experience in resistance training visited the laboratory on two occasions during either experimental (UN) or control (FWR) conditions separated by at least 72 h. In both sessions, participants completed a task-specific warm-up routine followed by three maximum CMJs (pre-intervention; baseline) and a set of three repetitions of either UN or FWR back squat exercise at 85% 1-RM. During the UN condition, the unstable load was suspended from the bar with elastic bands and accounted for 15% of the total load. Post-intervention, three maximum CMJs were performed at 30 s, 4 min, 8 min and 12 min after the last repetition of the intervention. The highest CMJ for each participant was identified for each timepoint. No significant increases (<i>p</i> > 0.05) in jump height, peak concentric power, or peak rate of force development (RFD) were found after the FWR or UN conditions at any timepoint. The lack of improvements following both FWR and UN conditions may be a consequence of the low percentage of unstable load and the inclusion of a comprehensive task-specific warm-up. Further research is required to explore higher UN load percentages (>15%) and the chronic effects following the implementation of a resistance training programme.https://www.mdpi.com/2411-5142/8/4/167conditioning contractionsexplosive strengthelastic bandsvertical jumpwarm-uppost-activation performance enhancement (PAPE) |
| spellingShingle | Renata Jirovska Anthony D. Kay Themistoklis Tsatalas Alex J. Van Enis Christos Kokkotis Giannis Giakas Minas A. Mina The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump Performance Journal of Functional Morphology and Kinesiology conditioning contractions explosive strength elastic bands vertical jump warm-up post-activation performance enhancement (PAPE) |
| title | The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump Performance |
| title_full | The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump Performance |
| title_fullStr | The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump Performance |
| title_full_unstemmed | The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump Performance |
| title_short | The Influence of Unstable Load and Traditional Free-Weight Back Squat Exercise on Subsequent Countermovement Jump Performance |
| title_sort | influence of unstable load and traditional free weight back squat exercise on subsequent countermovement jump performance |
| topic | conditioning contractions explosive strength elastic bands vertical jump warm-up post-activation performance enhancement (PAPE) |
| url | https://www.mdpi.com/2411-5142/8/4/167 |
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