{"product_id":"beinbeuger-beinstrecker","title":"Quadriga | Leg Extension \u0026 Curl Machine","description":"\u003chr data-start=\"367\" data-end=\"370\"\u003e\n\u003cp data-start=\"372\" data-end=\"419\"\u003e\u003cstrong\u003eLeg Extension and Lying Leg Curl in One Machine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrain quadriceps and hamstrings while improving balance, speed, and coordination.\u003c\/li\u003e\n\u003cli\u003ePerform two essential exercises for balanced thigh development that help prevent muscular imbalances and support healthy knees.\u003c\/li\u003e\n\u003cli\u003eQuadriga features a heavy-duty steel frame with a 7 × 7 cm profile and 2 cm material thickness for maximum stability and focused training.\u003c\/li\u003e\n\u003cli\u003eTwo pairs of handles are positioned for each exercise, allowing you to brace securely and fully engage the target muscles.\u003c\/li\u003e\n\u003cli\u003eThe 70 cm seat height provides full range of motion, while the narrow front section prevents taller athletes from hitting the frame or floor with their shoes.\u003c\/li\u003e\n\u003cli\u003eAdjust to any body size with stainless steel locking screws.\u003c\/li\u003e\n\u003cli\u003eExtra-thick padded rollers reduce pressure on the shins and calves.\u003c\/li\u003e\n\u003cli\u003eTwo adjustable backrest angles for leg extensions and a negatively angled pad for leg curls support ergonomic positioning.\u003c\/li\u003e\n\u003cli\u003eThe chrome-plated weight sleeve is compatible with both 30 mm and 50 mm plates.\u003c\/li\u003e\n\u003cli\u003eFootprint: 144 cm depth (including transport wheels), 79 cm width, 116 cm height in leg extension mode.\u003c\/li\u003e\n\u003cli\u003eThree large rubber feet protect the floor.\u003c\/li\u003e\n\u003cli\u003eMachine weight: 69 kg.\u003c\/li\u003e\n\u003cli\u003eMaximum load capacity: 300 kg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eExercise option 1: Lying leg curl\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eBenefits\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne of the most effective isolation exercises for the hamstrings, with greater muscle fiber recruitment than seated leg curls.\u003c\/li\u003e\n\u003cli\u003eAllows unilateral training so you can train one leg at a time, helping correct imbalances and reduce injury risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:98477db1-9098-4f40-8bb4-6347a9ac8e09-93\" data-testid=\"conversation-turn-188\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"31c240b1-e260-4e8d-aff2-64ccdcb29e62\" dir=\"auto\" data-message-model-slug=\"gpt-5-3\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-start=\"591\" data-end=\"919\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eUnlike seated leg curls, the target muscles are freer to contract.\u0026nbsp;\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cu\u003eBody Position and Movement\u003c\/u\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA proper setup ensures full range of motion and efficient execution.\u003c\/li\u003e\n\u003cli\u003eFold the backrest down and lie face down on the bench.\u003c\/li\u003e\n\u003cli\u003eKeep your upper body, hips, and thighs supported by the pad.\u003c\/li\u003e\n\u003cli\u003ePosition your knees so they remain free to move and align as closely as possible with the machine’s pivot point.\u003c\/li\u003e\n\u003cli\u003ePlace your feet hip-width apart, with the pad resting just above the ankle at the Achilles tendon.\u003c\/li\u003e\n\u003cli\u003eGrip the handles and start the movement by bending your knees to bring the pad toward your glutes.\u003c\/li\u003e\n\u003cli\u003ePause briefly at the top, then lower your legs under control before beginning the next repetition.\u003c\/li\u003e\n\u003cli\u003eKeep your hips and thighs in contact with the bench throughout the exercise and move only at the knee joint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eATLETICA Tip\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFully extend your knees at the end of each rep to activate the popliteus muscle, which starts the first 10° of knee flexion.\u003cbr\u003e\u003c\/li\u003e\n\u003cli\u003eIf shortened, it can cause pain at the back of the knee.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eExercise Option 2: Leg Extension\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe leg extension trains the quadriceps, the four-headed muscle at the front of the thigh responsible for extending the knee and enabling movements such as standing up, walking, and climbing stairs.\u003cbr\u003e\u003c\/li\u003e\n\u003cli\u003eSet the backrest in the upright position. Two angle settings are available for adjustment.\u003c\/li\u003e\n\u003cli\u003eAlign the pivot point of the leg module with your knee joint.\u003c\/li\u003e\n\u003cli\u003ePosition your lower shins behind the pad with your knees bent at about 90°.\u003c\/li\u003e\n\u003cli\u003eExtend your knees to raise the pad until your lower legs are roughly parallel to the floor.\u003c\/li\u003e\n\u003cli\u003eAvoid fully locking out the knees and lower the weight under control after a short pause.\u003c\/li\u003e\n\u003cli\u003eQuadriga isolates the quadriceps for focused muscle activation.\u003c\/li\u003e\n\u003cli\u003eYou can perform the exercise with one leg or both legs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eArticle ID\u003c\/p\u003e\n\u003ctable class=\"tab-info-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #f7f8fc;\"\u003eSKU\u003c\/td\u003e\n\u003ctd style=\"background-color: #f7f8fc;\"\u003e555-1147\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e4260754399041\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #f7f8fc;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"background-color: #f7f8fc;\"\u003eMatt black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of power station\u003c\/td\u003e\n\u003ctd\u003eLeg curlers and leg extensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"S4","offers":[{"title":"Default Title","offer_id":44839104020747,"sku":"555-1147","price":899.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0542\/7488\/3781\/files\/Kraftgerate_Beinpresse_Quadriga_Beinbeuger_Beinstrecker_1.jpg?v=1704895107","url":"https:\/\/atletica.de\/en\/products\/leg-curl-leg-extension-1","provider":"ATLETICA ","version":"1.0","type":"link"}