09/02/2026
🔹 Leg Extension ή Leg Press; Τι δείχνει η έρευνα; 🔹
Πρόσφατη μελέτη έδειξε ότι:
✅ Το Leg Extension ενεργοποιεί καλύτερα τον «κεντρικό» τετρακέφαλο (re**us femoris) και είναι ιδανικό για αποκατάσταση και ενδυνάμωση γονάτου.
✅ Το Leg Press βοηθά περισσότερο στη συνολική μυϊκή ανάπτυξη, ειδικά σε γλουτούς και μηρούς.
👉 Συμπέρασμα: Και οι δύο ασκήσεις έχουν θέση σε ένα σωστό πρόγραμμα, ανάλογα με τον στόχο και τις ανάγκες κάθε ασκούμενου.
Στο Φυσικοθεραπευτικό Κέντρο Πάσχος σχεδιάζουμε εξατομικευμένα προγράμματα με βάση την επιστήμη και όχι τους μύθους.
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🌐 paschosphysio.gr
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𝗛𝘆𝗽𝗲𝗿𝘁𝗿𝗼𝗽𝗵𝗶𝗰 𝗘𝗳𝗳𝗲𝗰𝘁𝘀 𝗼𝗳 𝗦𝗶𝗻𝗴𝗹𝗲- 𝘃𝗲𝗿𝘀𝘂𝘀 𝗠𝘂𝗹𝘁𝗶-𝗝𝗼𝗶𝗻𝘁 𝗘𝘅𝗲𝗿𝗰𝗶𝘀𝗲: 𝗔 𝗗𝗶𝗿𝗲𝗰𝘁 𝗖𝗼𝗺𝗽𝗮𝗿𝗶𝘀𝗼𝗻 𝗕𝗲𝘁𝘄𝗲𝗲𝗻 𝗞𝗻𝗲𝗲 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻 𝗮𝗻𝗱 𝗟𝗲𝗴 𝗣𝗿𝗲𝘀𝘀
🦵 Single-joint knee extension (KE) and multi-joint leg press (LP) are commonly used exercises to train the quadriceps femoris (QF), the largest muscle group in humans. However, their comparative effectiveness for inducing QF hypertrophy remains unclear. Furthermore, the specific muscles hypertrophied by LP are not well characterized.
📘 A brand-new study by Kinosh*ta and colleagues compared the hypertrophic effects of KE and LP on the QF and other lower-limb muscles (https://pubmed.ncbi.nlm.nih.gov/41630124/)
📋 Methods
🏋️♂️ Seventeen untrained adults performed KE with one leg and LP with the contralateral leg at 70% of one-repetition maximum, 10 reps/set, 5 sets/session, 2 sessions/week for 12 weeks. MRI was used to assess pre- and post-training muscle volumes of 17 individual muscles, including the four QF heads, gluteus muscles, hamstrings, and adductors.
📊 Results (s. infographic)
Muscle volumes of the individual and whole QF significantly increased in both conditions ( P ≤ 0.026), except for the re**us femoris in the LP condition ( P = 0.379).
✅ Re**us femoris volume gains were greater for KE than LP (+13.2% vs. +1.1%, P ≤ 0.001), but gains in the vasti muscles (+5.0-7.2% vs. +4.4-6.2%) and whole QF (+7.1% vs. +4.9%) were comparable between conditions ( P ≥ 0.319).
✅ LP, but not KE, increased volumes of the gluteus maximus (+15.4%) and the adductor magnus (+6.2%) ( P ≤ 0.001).
✅ A follow-up experiment using surface electromyography showed that muscle excitation patterns during KE and LP generally mirrored the between-condition hypertrophic differences and similarities observed after the training intervention.
💡Conclusions
LP induces significant hypertrophy in the gluteus maximus and adductor magnus while producing similar vasti and overall QF growth as KE, indicating that LP is a highly time-efficient exercise.
However, KE is essential for effectively targeting the re**us femoris, which may have clinical relevance given its high susceptibility to strain injuries and marked re**us atrophy after anterior cruciate ligament reconstruction.