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Muscular hypertrophic adaptations in high and low load training regimes : Eight weeks training intervention

Aim The purpose of this study was to assess muscle hypertrophy outcomes from high and low load strength training routines performed to muscular fatiguein a unilateral design. Method 14 well-trained men and women (age 26.4 ±4.4 years, weight 79.9 ±10.7 kg, height 179.4 ±76 cm) volunteered to participate in eight weeks of fully supervised training two times per week. Subjects had their legs randomized to a HL protocol performing 3-5reps and LL protocol performing 20-25 reps. Training was performed in leg press and leg extension and all sets were performed until volitional failure. Subjects were measured for muscle thickness by ultrasound at mid and distal portion of vastus lateralis before and after the study. Paired sample t-test and independent sample t-test was used to establish differences in pre and post and between leg differences. Results Muscle thickness increased inHL: MID 8% p=0,002 and DIST 14% p=0.009, in LL: MID 7% p=0.004 and was unchanged at DIST 4% p=0.512. Total muscle thickness for both measurement sites combined increases significantly in both legs, HL: 9% p=0.001 and LL: 5% p=0.045. There were no between leg differences at MID (p=0.404) or DIST (p=0.989) after eight weeks. Conclusion We conclude that high and low load strength training performed unilaterally to volitional failure yields equal increases in muscle thickness after eight weeks for well-trained men and women. / <p>Kursen Projektarbete.</p>

Identiferoai:union.ndltd.org:UPSALLA1/oai:DiVA.org:gih-4919
Date January 2017
CreatorsKalenius, Richard
PublisherGymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap
Source SetsDiVA Archive at Upsalla University
LanguageEnglish
Detected LanguageEnglish
TypeStudent thesis, info:eu-repo/semantics/bachelorThesis, text
Formatapplication/pdf
Rightsinfo:eu-repo/semantics/openAccess
RelationExamensarbete ; 2017:48

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