COMPARATIVE CASE STUDY OF BLOOD FLOW RESTRICTION TRAINING FOR INJURED VS. HEALTHY ATHLETE
Bibliographic record
Abstract
Emily Sanders, Briley Lawson, Jeremiah G. Lukers. Truett McConnell University, Cleveland, GA. BACKGROUND: Blood Flow Restriction (BFR) training in combination has shown to correlate improved muscle hypertrophy with rehabilitation exercises. The purpose of this study is to analyze the effects of BFR incorporation to a patient’s anterior crucial ligament (ACL) reconstruction rehabilitation and muscle hypertrophy compared to a non-injured athlete in the same sport over five (n=5) weeks. METHODS: Two (n=2) athletes volunteered for the study. One athlete had ACL surgery while the other subject was healthy. The study was approved by the Institutional Review Board at Truett McConnell University and the operating orthopedic surgeon. Measurements for the study assessed quadriceps muscle mass, lower body lean muscle mass (LMM), and patient-reported outcomes (PROs). A tape measure (Patterson Medical, IL, USA) assessed quadriceps muscle girth 10.2 and 15.2 cm above the patella. The InBody 770 (Seoul, SK) assessed overall and lean muscle mass differences. The 12-Item Short Form Survey (SF-12) and the Lower Extremity Function Survey (LEFS) were used to assess mental health, physical health, and patient perception of improvement in the knee. BFR (Owens Recovery Science, TX, USA) Personal Tourniquet System (PTS) (Delfi, Vancouver, CA) followed lower body PTS protocols of 5-6 exercises per therapy session for 2-3 times per week. BFR protocol consisted of 20-30% of 1-repetition max (1-RM) of 80% limb occlusion pressure (LOP) at the thigh below the groin. Sets consisted of 30/15/15/15 repetitions with 30 seconds rest between sets. RESULTS: In the ACL patient, right leg LMM began at 6.55 kilograms (kg) and increased to 6.81 kg. Right leg circumference increased by 4 cm and 3.1cm at 10cm and 15 cm above the patella respectively. The SF-12 physical and mental health scores improved from 35 to 53 and 54 to 58 (the US average is 50 is for both mental and physical heath). The LEFS improved by 17% points. In the healthy athlete, right leg LMM was 7.67 kg at baseline and increased to 7.86 kg. Right leg circumference increased by 2.8 cm and 2.5 cm at 10 cm and 15 cm above the patella respectively. SF-12 and LEFS scores improved minimally. CONCLUSIONS: Based on the comparative case study, BFR therapy can increase the rate of muscle hypertrophy in the body and improve patient outcomes in injured athletes and maintain LMM needed for sports performance.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".