Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variations
Background The aim was to determine the relationship between the cross-sectional area of the quadriceps femoris and strength performance in the deep and parallel barbell squat. Methods The sample included 16 university students (seven female, 24.1 ± 1.7 years). Muscle strength was expressed as exter...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
PeerJ Inc.
2021-11-01
|
| Series: | PeerJ |
| Subjects: | |
| Online Access: | https://peerj.com/articles/12435.pdf |
| _version_ | 1827608959875284992 |
|---|---|
| author | Filip Kojic Saša Ðurić Igor Ranisavljev Stanimir Stojiljkovic Vladimir Ilic |
| author_facet | Filip Kojic Saša Ðurić Igor Ranisavljev Stanimir Stojiljkovic Vladimir Ilic |
| author_sort | Filip Kojic |
| collection | DOAJ |
| description | Background The aim was to determine the relationship between the cross-sectional area of the quadriceps femoris and strength performance in the deep and parallel barbell squat. Methods The sample included 16 university students (seven female, 24.1 ± 1.7 years). Muscle strength was expressed as external load, including the one-repetition maximum and the body mass segments involved (calculated according to Dempster’s method). The cross-sectional area of the quadriceps femoris muscles was determined using ultrasound, while leg muscle mass was measured using the Bioelectrical Impedance method. Results The cross-sectional areas of the three vastii muscles and leg muscle mass showed moderate to strong correlation with external load in both squat types (r = 0.509–0.873). However, partial correlation (cross-sectional area of quadriceps femoris muscles were controlled) showed significant association only between leg muscle mass and deep squat (r = 0.64, p < 0.05). The cross-sectional area of the vastus lateralis showed a slightly higher correlation with external load in the parallel than in the deep squat (r = 0.67, p < 0.01 vs. r = 0.59, p < 0.05). The regression analysis extracted the vastus medialis cross-sectional area as the most important factor in manifesting strength (parallel squat: R2 = 0.569; deep squat: R2 = 0.499, both p < 0.01). The obtained results suggest that parallel squat strength depends mainly on the cross-sectional area of the vastii muscles, while it seems that the performance in the deep squat requires an additional engagement of the hip and back extensor muscle groups. |
| first_indexed | 2024-03-09T07:23:07Z |
| format | Article |
| id | doaj.art-a64b8d2e86174d119a7cc5898bab7f8a |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T07:23:07Z |
| publishDate | 2021-11-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
| series | PeerJ |
| spelling | doaj.art-a64b8d2e86174d119a7cc5898bab7f8a2023-12-03T07:14:01ZengPeerJ Inc.PeerJ2167-83592021-11-019e1243510.7717/peerj.12435Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variationsFilip Kojic0Saša Ðurić1Igor Ranisavljev2Stanimir Stojiljkovic3Vladimir Ilic4Teachers Education Faculty, University of Belgrade, Belgrade, SerbiaLiberal Arts Department, American University of the Middle East, Kuwait City, KuwaitFaculty of Sport and Physical Education, University of Belgrade, Belgrade, SerbiaFaculty of Sport and Physical Education, University of Belgrade, Belgrade, SerbiaFaculty of Sport and Physical Education, University of Belgrade, Belgrade, SerbiaBackground The aim was to determine the relationship between the cross-sectional area of the quadriceps femoris and strength performance in the deep and parallel barbell squat. Methods The sample included 16 university students (seven female, 24.1 ± 1.7 years). Muscle strength was expressed as external load, including the one-repetition maximum and the body mass segments involved (calculated according to Dempster’s method). The cross-sectional area of the quadriceps femoris muscles was determined using ultrasound, while leg muscle mass was measured using the Bioelectrical Impedance method. Results The cross-sectional areas of the three vastii muscles and leg muscle mass showed moderate to strong correlation with external load in both squat types (r = 0.509–0.873). However, partial correlation (cross-sectional area of quadriceps femoris muscles were controlled) showed significant association only between leg muscle mass and deep squat (r = 0.64, p < 0.05). The cross-sectional area of the vastus lateralis showed a slightly higher correlation with external load in the parallel than in the deep squat (r = 0.67, p < 0.01 vs. r = 0.59, p < 0.05). The regression analysis extracted the vastus medialis cross-sectional area as the most important factor in manifesting strength (parallel squat: R2 = 0.569; deep squat: R2 = 0.499, both p < 0.01). The obtained results suggest that parallel squat strength depends mainly on the cross-sectional area of the vastii muscles, while it seems that the performance in the deep squat requires an additional engagement of the hip and back extensor muscle groups.https://peerj.com/articles/12435.pdfRange of motionExternal loadBioelectrical impedanceDempster’s methodDeep squatParallel squat |
| spellingShingle | Filip Kojic Saša Ðurić Igor Ranisavljev Stanimir Stojiljkovic Vladimir Ilic Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variations PeerJ Range of motion External load Bioelectrical impedance Dempster’s method Deep squat Parallel squat |
| title | Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variations |
| title_full | Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variations |
| title_fullStr | Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variations |
| title_full_unstemmed | Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variations |
| title_short | Quadriceps femoris cross-sectional area and specific leg strength: relationship between different muscles and squat variations |
| title_sort | quadriceps femoris cross sectional area and specific leg strength relationship between different muscles and squat variations |
| topic | Range of motion External load Bioelectrical impedance Dempster’s method Deep squat Parallel squat |
| url | https://peerj.com/articles/12435.pdf |
| work_keys_str_mv | AT filipkojic quadricepsfemoriscrosssectionalareaandspecificlegstrengthrelationshipbetweendifferentmusclesandsquatvariations AT sasaðuric quadricepsfemoriscrosssectionalareaandspecificlegstrengthrelationshipbetweendifferentmusclesandsquatvariations AT igorranisavljev quadricepsfemoriscrosssectionalareaandspecificlegstrengthrelationshipbetweendifferentmusclesandsquatvariations AT stanimirstojiljkovic quadricepsfemoriscrosssectionalareaandspecificlegstrengthrelationshipbetweendifferentmusclesandsquatvariations AT vladimirilic quadricepsfemoriscrosssectionalareaandspecificlegstrengthrelationshipbetweendifferentmusclesandsquatvariations |