Corbin Hedt

• Doctor of Physical Therapy
• Physical Therapist at Houston Methodist Hospital

OBJECTIVES: Patients often experience a significant amount of muscle and bone atrophy following Achilles tendon rupture and surgical repair due to mechanical unloading and an inability to safely perform resistance training at intensities sufficient to preserve mass in the early postoperative period. This potentially increases the risk of reinjury,...

Sidelying hip abduction (SHA) is a common exercise utilized in rehabilitation to strengthen the gluteus medius (GMed). Alterations in the exercise can produce different patterns of muscular activity. No studies have examined the effect of mechanical pelvic stabilization during SHA. This study enrolled 19 participants (male = 11, female = 8) who per...

Objectives Blood Flow Restriction (BFR) training provides partial occlusion at the proximal upper and lower extremities and has been shown to improve muscular strength and hypertrophy following an injury or surgery. By eliciting hypoxic intramuscular conditions, we can stimulate adaptive processes in skeletal muscle in a similar manner to high inte...

Background: As blood flow restriction (BFR) utilization continues to rise, it is crucial to define optimal parameters for use. Currently unknown are the effects of occlusion level during BFR on muscle activity in the proximal shoulder. Purpose/Hypothesis: The purpose of this study was to compare electromyographic amplitude (EMGa) of shoulder muscul...

Background: Recent evidence indicates that combined upper extremity blood flow restriction (BFR, applied distally to the shoulder) and low-load resistance exercise (LIX) augments clinically meaningful responses in shoulder region tissues proximal to the occlusion site. The purpose of this investigation was to determine the efficacy of BFR-LIX for...

Background Muscle atrophy is common after an injury to the knee and anterior cruciate ligament reconstruction (ACLR). Blood flow restriction therapy (BFR) combined with low-load resistance exercise may help mitigate muscle loss and improve the overall condition of the lower extremity (LE). Purpose To determine whether BFR decreases the loss of LE...

# Background The functional movement screen (FMS™) and Y-balance test (YBT) are commonly used to evaluate mobility in athletes. # Purpose The primary aim of this investigation was to determine the relationship between demographic and anthropometric factors such as sex, body composition, and skeletal dimension and scoring on YBT and FMS™ in male...

Objective Lumbar spondylolysis (SPONDY) and lumbar disc herniation (DISC) are common lumbar spine injuries that occur in baseball athletes. The purpose of this study was to determine whether Major League Baseball (MLB) draftees with a history of SPONDY or DISC have shorter career length, lower level of professional advancement, and longer cumulativ...

The use of blood flow restriction (BFR) within rehabilitation is rapidly increasing as further research is performed elucidating purported benefits such as improved muscular strength and size, neuromuscular control, decreased pain, and increased bone mineral density. Interestingly, these benefits are not isolated to structures distal to the occlusi...

Background: The relationship between pitch volume and injury is well-represented within baseball literature. However, the impact of softball pitch volume on injury epidemiology is limited. Hypothesis: The purpose was to determine if increased pitch volumes in high school–aged softball pitchers are related to increased rates of subjectively reported...

Introduction to Blood Flow Restriction: Blood flow restriction (BFR) therapy utilizes a specialized cuff that is applied proximally around an injured limb, and restricts blood flow (50-80% arterial limb occlusion pressure, LOP) via compression. When combined with low-intensity exercise (LIX; <30% 1-repetition maximum), BFR-LIX has been shown to mim...

# Background Fatigue may play a role in anterior cruciate ligament (ACL) injury, but has not been incorporated into objective test batteries for return to sport decisions following ACL reconstruction (ACLR) surgery. The effect of fatigue on muscle function and performance following surgery and rehabilitation has been poorly studied. # Purpose/Hyp...

Background: Although blood flow restriction (BFR) is becoming increasingly popular in physical therapy and athletic training settings, little is known about the effects of BFR combined with low-intensity exercise (LIX) on muscles proximal to the site of occlusion. Hypothesis/Purpose: Determine whether LIX combined with BFR applied distally to the...

INTRODUCTION: Little data exists on the difference between various progressive hitting phases that may be involved with return to baseball after elbow injury. The purpose of this study was to critically analyze and report the kinetic force of the medial elbow during various phases and intensities of hitting in Division I collegiate baseball athlete...

Context: Shoulder rehabilitation can be a difficult task due to the dynamic nature of the joint complex. Various weight training implements, including kettlebells (KB), have been utilized for therapeutic exercise in the rehabilitation setting to improve shoulder girdle strength and motor control. The KBs are unique in that they provide an unstable...

Background: Eccentric exercise has demonstrated great utility in the rehabilitation of various shoulder pathologies. Research on the electromyographic (EMG) activity of the shoulder musculature during these activities is limited, however. Furthermore, no studies have observed how forearm positioning during exercise affects EMG output. Purpose/Hypot...

Blood flow restriction (BFR) therapy has been observed to improve post-operative recovery in the limbs when combined with low intensity resistance exercise (LIX). Little data exists regarding use of BFR for proximal benefit of the upper limbs (shoulders). PURPOSE: (1) Determine if rotator cuff (RC) exercises combined with BFR (BFR-Rx) promote great...

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Objectives: Patients often experience atrophy and bone loss immediately following anterior cruciate ligament (ACL) reconstruction. Rehabilitation (rehab) combined with blood flow restriction (BFR) therapy have been shown to mitigate muscle atrophy and reduce timelines for earlier return to function. Little is known about how BFR may impact bone los...

Objectives Patients often experience atrophy and bone loss immediately following anterior cruciate ligament (ACL) reconstruction. Rehabilitation (rehab) combined with blood flow restriction (BFR) therapy have been shown to mitigate muscle atrophy and reduce timelines for earlier return to function. Little is known about how BFR may impact bone loss...

Hedt, CA, Pearson, JM, Lambert, BS, McCulloch, PC, and Harris, JD. Sex-related hip strength measures among professional soccer players. J Strength Cond Res XX(X): 000-000, 2019-Lower-extremity musculoskeletal injuries in soccer are common among sexes. However, it remains unknown whether differences between sexes exist with regard to absolute or rel...

INTRODUCTION: Pain assessment using the visual analogue scale (VAS) is common during patient evaluation in orthopedic clinical settings. Measures are taken using a handwritten mark on a 100mm line representing a spectrum from “no pain-worst pain”. However, because VAS recording of pain is subjective and likely to be influenced by a number of physio...

Introduction: EMG data has long been used to quantify muscle activation during physical activity. 1,2 Several studies have determined that specific muscle patterns are active for common functional movements and even subtle changes to a given activity (such as hand/forearm placement or grip) can elicit changes in muscle activation. 3,4,5 In rehabili...

Chronic ankle instability (CAI) is a common dysfunctional state in the basketball population accompanied by pain, weakness and proprioceptive deficits which greatly affect performance. Research evidence has supported the use of blood flow restriction (BFR) training as an effective treatment strategy for improving muscle strength, hypertrophy and fu...

Inactivity following injury and surgery due to pain, instability, or immobilization results in loss of muscle mass and function. As a result, both risk of reinjury and overall recovery time are a prime concern for clinicians and therapists trying to minimize these deleterious effects. While resistance exercise has been demonstrated to be highly eff...

Numerous injuries are associated with the throwing athlete every year – including UCL injuries, rotator cuff impingement/tears, biceps pathologies, and superior labrum tears. Physical therapists play an important role in returning overhead athletes to sport and reducing the risk for future injury. Current literature suggests an incremental, progres...

Context: Interval throwing programs (ITP) have long been used in the physical therapy setting to aid in the safe and efficacious return to sport for an overhead athlete. However, the overall utilization and variation of interval throwing programs are unknown in the physical therapy setting leading to potential inconsistencies in treatment paradigm...

Purpose/hypothesis: This study was designed to investigate the test-retest reliability, concurrent validity, and the standard error of measurement (SEm) of a pulse rate assessment application (Azumio®'s Instant Heart Rate) on both Android® and iOS® (iphone operating system) smartphones as compared to a FT7 Polar® Heart Rate monitor. Number of subj...