Muscle thickness correlates to muscle cross sectional area in the assessment of strength training induced hypertrophy
| Autor: | Paul L. Greenhaff, Jonathan I. Quinlan, Martino V. Franchi, Tariq Taylor, Marco Narici, Joanne Mallinson, Stefano Longo |
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| Přispěvatelé: | University of Zurich, Franchi, M V |
| Jazyk: | angličtina |
| Předmět: |
Adult
Male Strength training Physical Therapy Sports Therapy and Rehabilitation 610 Medicine & health ACSA Muscle volume Muscle hypertrophy Quadriceps Muscle 03 medical and health sciences Young Adult 0302 clinical medicine 2732 Orthopedics and Sports Medicine anatomical cross-sectional area Femur length Ultrasound Medicine magnetic resonance imaging Humans Orthopedics and Sports Medicine Muscle Strength 3612 Physical Therapy Sports Therapy and Rehabilitation Ultrasonography medicine.diagnostic_test business.industry Volume Quadriceps muscle Resistance training Magnetic resonance imaging Resistance Training Original Articles 030229 sport sciences Anatomy Hypertrophy Original Article anatomical cross‐sectional area 10046 Balgrist University Hospital Swiss Spinal Cord Injury Center Cross-Sectional business Nuclear medicine 030217 neurology & neurosurgery ultrasound volume Anatomy Cross-Sectional MRI |
| Zdroj: | Scandinavian Journal of Medicine & Science in Sports |
| ISSN: | 0905-7188 1600-0838 |
| Popis: | Aim: Muscle thickness (MT) measured by ultrasound has been used to estimate cross-sectional area (measured by CT and MRI) at a single time-point. We tested whether MT could be used as a valid marker of MRI determined muscle anatomical cross-sectional area (ACSA) and volume changes following resistance training (RT).\ud Methods: Nine healthy, young, male volunteers (24±2 y.o., BMI 24.1±2.8 kg/m2) had vastus lateralis (VL) muscle volume (VOL) and ACSA mid (at 50% of femur length, FL) assessed by MRI, and VL MT measured by ultrasound at 50% FL. Measurements were taken at baseline and after 12 weeks of isokinetic RT. Differences between baseline and post-training were assessed by Student’s paired t-test. The relationships between MRI and ultrasound measurements were tested by Pearson’s correlation. \ud Results: After RT, MT increased by 7.5±6.1% (p0.05).\ud Conclusions: These data support evidence that MT is a reliable index of muscle ACSAmid and VOL at a single time-point. MT changes following RT are associated with parallel changes in muscle ACSAmid but not with the changes in VOL, highlighting the impact of RT on regional hypertrophy. |
| Databáze: | OpenAIRE |
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