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159:(ACL), there is no proof that this increases the risk of injury, except for those with pre-existing ACL issues. The leg extension is a good exercise for isolating muscular contraction in the quadriceps, but as with all isolation exercises, should be included in a holistic resistance training program working all muscles, especially
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muscle (m. quadriceps femoris) in the legs. The exercise is done using a machine called the Leg
Extension Machine. There are various manufacturers of these machines and each one is slightly different. Most gym and weight rooms will have the machine in their facility. The leg extension is an isolated
150:
Some fitness professionals and coaches advise against using an isolating leg extension machine because they believe it puts unnatural pressure on the knees and ankles.. However, this concern is based more on anecdotal evidence than on solid research. Whilst there is some evidence that the leg
262:
Escamilla, Rafael F.; MacLeod, Toran D.; Wilk, Kevin E.; Paulos, Lonnie; Andrews, James R. (2012). "ACL Strain and
Tensile Forces for Weight Bearing and Non—Weight-Bearing Exercises After ACL Reconstruction: A Guide to Exercise Selection".
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300:"Range of Motion and Leg Rotation Affect Electromyography Activation Levels of the Superficial Quadriceps Muscles During Leg Extension"
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The exercise consists of bending the leg at the knee and extending the legs, then lowering them back to the original position.
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exercise targeting one specific muscle group, the quadriceps. It should not be considered as a total leg workout, such as the
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Signorile, Joseph F.; Lew, Karen M.; Stoutenberg, Mark; Pluchino, Alessandra; Lewis, John E.; Gao, Jinrun (2014).
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gluteus-maximus: muscle building, weight loss, training, nutrition
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is a resistance weight training exercise that targets the
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304:Journal of Strength and Conditioning Research
51:introducing citations to additional sources
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216:"Leg Extensions Exercise Guide and Video"
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41:Relevant discussion may be found on the
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34:relies largely or entirely on a
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1058:. You can help Knowledge by
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1105:Weight training exercises
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192:"Leg extension, machine"
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630:Close-grip bench press
151:extension's unnatural
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939:Side-lying leg raise
684:Abdomen and obliques
610:Reverse grip push-up
47:improve this article
980:Bodyweight exercise
161:antagonistic muscle
990:Muscle hypertrophy
932:(inside of thighs)
795:Dirty dog exercise
636:Close grip push-up
218:. BodyBuilding.com
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1015:Flywheel training
1009:List of exercises
826:(front of thighs)
654:Triceps extension
554:handstand push-up
398:Strength training
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244:on 2015-03-06
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118:Leg extension
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103:December 2013
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64: –
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58:Find sources:
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36:single source
32:This article
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26:
21:
20:
1110:Sports stubs
1060:expanding it
1053:
1038:
985:Calisthenics
975:Bodybuilding
895:Good-morning
844:
748:Good-morning
457:(upper back)
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246:. Retrieved
242:the original
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220:. Retrieved
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199:. Retrieved
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57:
33:
1000:Plyometrics
760:Pelvic lift
578:Upright row
544:Front raise
525:(shoulders)
434:Machine fly
416:Bench press
222:13 December
1099:Categories
958:Calf raise
874:Hamstrings
824:Quadriceps
728:Lower back
673:Wrist curl
598:Bicep curl
506:Supine row
494:Seated row
248:2015-06-26
201:2022-03-31
175:References
165:hamstrings
153:moment arm
128:quadriceps
73:newspapers
930:Adductors
907:Leg press
851:Leg press
801:Leg press
699:Leg raise
686:(abdomen)
648:Push-down
550:Headstand
538:Face pull
512:Face pull
482:Pull-down
476:Muscle-up
455:trapezius
422:Chest fly
407:Pectorals
400:exercises
43:talk page
971:See also
901:Leg curl
889:Deadlift
839:Deadlift
789:Deadlift
775:buttocks
742:Deadlift
665:Forearms
523:Deltoids
334:10295500
326:25148303
285:22387600
137:deadlift
621:Triceps
604:Chin-up
488:Pull-up
470:Chin-up
440:Push-up
409:(chest)
87:scholar
1026:Legend
950:Calves
883:Bridge
833:Bridge
783:Bridge
736:Bridge
711:Sit-up
693:Crunch
589:Biceps
532:Bridge
332:
324:
283:
167:, and
89:
82:
75:
68:
60:
919:Squat
913:Lunge
863:Squat
857:Lunge
813:Squat
807:Lunge
717:Squat
552:into
330:S2CID
133:squat
94:JSTOR
80:books
1056:stub
773:and
771:Hips
453:and
451:Lats
322:PMID
281:PMID
224:2013
122:The
66:news
1020:Gym
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