WHAT WAS STUDIED? To examined the impact of resistance training on muscle performance, comparing peak torque occurring only at long muscle lengths to one comparing a mix of long and short muscle lengths. WHO WAS STUDIED? 7 individuals (5 males and 2 females) aged 18-40 who had: • At least 2 consecutive years of resistance training experience • No health contraindications to exercise (e.g., heart disease, hypertension, diabetes, etc.) THE STUDY: 7 participants completed 8-week training conditions (LONG and MIXED). Measurements were taken before and after. LONG: 6 sets of seated lengthened curls to failure MIXED: 3 sets each of seated lengthened and standing shortened curls RESULTS: Both training methods led to significant gains in elbow flexor muscle size. While the LONG method showed slightly greater increases in muscle size compared to the MIXED method, this difference was not considered substantial. WHY THESE RESULTS? The exercise selected was of poor choice because it primarily stretches the biceps tendon rather than the biceps muscle itself. Additionally, the internal forces within the muscle during this exercise are relatively weak. Furthermore, the small sample size could’ve also results in the detection of small effects. SUMMARY: While this study didn’t really show a meaningful difference between condition. The limitations it carry’s prevent any conclusion of the biceps not benefit from longer lengths. Reference: https://www.researchgate.net/publication/387135187_Mixing_Up_Muscle_Lengths_The_Effects_of_Manipulating_Peak_Torque_At_Different_Muscle_Lengths_in_the_Elbow_Flexors
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