For instance, an overactive latissimus dorsi can cause the low back to arch while tight/overactive calves limiting ankle dorsiflexion range can cause an excessive forward lean (6). Pecs Major/ Minor, teres major and Latissimus dorsi. This excessive forward lean is probably due to overactive calf muscles (gastrocnemius and soleus), hip flexors and/or abs (rectus abdominis, external oblique) as well as underactive glutes (gluteus maximus), shins (anterior tibialis) and/or medial back (erector spinae). Excessive forward lean (Underactive Muscles) answer. Looking from the side (Lateral View), you see an ELF (Excessive Forward lean compensation) with a GASH (Gastrocnemius, Abdominal Complex, Soleus, Hip Flexors – overactive muscles) across his hips; he is at least the AGE (Anterior Tibialis, Gluteus Maximus, Erector Spinae (underactive muscles) of 1000, Upper crossed syndrome refers to an overlapping configuration of overactive and underactive muscle groups. Poor posture with excessive tight muscles and weak muscle will disrupt the alignment of your normal cervical and thoracic curvature and leads to excessive pressure on your spine, discs, facet joints, muscles, ligaments, and bones. Gastrocnemius, Hip flexor complex, Abdominal complex: Low back arches during overhead squat assessment, which muscles are probably overactive? Wearing orthotics. Anterior adductors , sartorius (the long muscle that wraps from the ASUS around to the medial condyle of the femur) and rectus femoris all contribute to excessive hip flexion. Low back arches (Overactive Muscles) This is part two of three episodes where the topic of over- and underactive muscles will be discussed. Excessive forward lean during overhead squat assessment, which muscles are probably overactive? Overactive: Soleus, Gastrocnemius, hip flexor complex, abdominal complex. Overactive muscles pull down and apart the scaps. The above picture shows an example of an excessive forward lean and also arms falling forward. Then hinge forward at the waist and reach for your toes. Anabolic steroids, also known more properly as anabolic–androgenic steroids (AAS), are steroidal androgens that include natural androgens like testosterone as well as synthetic androgens that are structurally related and have similar effects to testosterone. A hypertonic muscle is defined as a muscle which exhibits excessive tone or tension (Medical Dictionary, Medline Plus). Excessive forward lean (Overactive Muscles) answer. An excessive forward lean on an OSA is probably due to what underactive muscles? Arched lower back (anterior pelvic tilt)-Probable overactive/Under-active muscles Soleus, Lat. Arms Fall Forward Excessive Forward Trunk Lean Figure 2 presence of toe-out is noted with the 2nd metatarsophalangeal joint rotates outward and appears lateral to the medial malleolus. Classic Hip Flexor Imbalance. Low Back Arches/ Overactive Muscles . Excessive Forward Lean-Probable overactive/Under-active muscles. The overactive muscles are, hip flexor, erector spinae, tight lats. – Latissimus dorsi – Teres major (ter-ease, located at the bottom of the scapula and the humerus, pg 639) – Pectoralis major/minor (pg 938) Underactive: Muscles that help keep the scaps together and weakened shoulder / rotator cuffs stability. Excessive forward lean Soleus Anterior tibialis Gastrocnemius Gluteus maximus Hip flexor complex Erector spinae Abdominal complex Low back arches Hip flexor complex Gluteus maximus Erector spinae Hamstring complex Latissimus dorsi Intrinsic core stabilizers Arms Fall Forward/ Overactive Muscles. For many of us, working with individuals with tight/overactive hip flexors is a common occurrence. Overactive (tight) muscles work too much, and; Underactive (weak) muscles work too little. Hip Flexor complex 2. 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