Abstract
Background: Resistance training with low loads (~30% 1repetition maximum)
performed with concurrent partial blood flow restriction of the working limb
(Blood flow restricted exercise: LL- BFRE) has achieved scientific merit over the
past decades. Further, LL- BFRE has demonstrated to promote gains in skeletal
muscle hypertrophy and strength as comparable to that seen with heavy resistance
strength (HRST). In some patients, however, HRST can be contraindicated
due to pain or post surgical restrictions. Despite these contraindication, the majority
of patients would most likely benefit from increasing (or at least maintaining)
their skeletal muscle mass and strength in order to maintain a sufficiently
high functional capacity level and quality of life.
Purpose / Aim of Study: To examine the feasibility of blood flow restricted
low- load exercise (LL- BFRE) in patients suffering from orthopedic lower limb
(LL) injuries and measure outcomes on muscle strength, functional capacity,
jump height, and patient-reported outcome measures (PROM).
Materials and Methods: 14 patients (52 +/-17 years) diagnosed with variuos
orthopedic lower limb injuries were included. The patients performed LL-BFRE
for 4-8 weeks. LL-BFRE comprised of unilateral leg press with concurrent partial
blood restriction (40% occlusion pressure) at 30%1RM. Two protocols were
tested containing 4 rounds with 30-sec rest pauses. Participants completed 3
functional performance tests, 2 strength-based tests, 1 hop- test, and KOOS.
Findings / Results: Three patients dropped out due to exercise-related adverse
events (2) and personal reasons (1). Thigh Circumferences and Isometric
Knee Extensor Strength (injured side) increased from 45.2 ± 3.1 cm to 46.0 ±
4.0 cm (p=0.05) and 3.1 ± 0.8 N/m to 4.3 ± 1.4 N/m (p=0.01). 30-seconds
sit to stand improved from 16 ± 7 repetitions to 19 ± 10 repetitions (p=0.02).
KOOS Pain, Symptoms and Sport & Rec improved from 62 ± 19 points to 74 ±
20 point (p=0.03), 58 ± 16 points to 67 ± 15 points (p=0.03), and 22 ± 18
points to 40 ± 24 points (p=0.03).
Conclusions: LL-BFRE was feasible in patients suffering from different LLinjuries.
The intervention may improve
performed with concurrent partial blood flow restriction of the working limb
(Blood flow restricted exercise: LL- BFRE) has achieved scientific merit over the
past decades. Further, LL- BFRE has demonstrated to promote gains in skeletal
muscle hypertrophy and strength as comparable to that seen with heavy resistance
strength (HRST). In some patients, however, HRST can be contraindicated
due to pain or post surgical restrictions. Despite these contraindication, the majority
of patients would most likely benefit from increasing (or at least maintaining)
their skeletal muscle mass and strength in order to maintain a sufficiently
high functional capacity level and quality of life.
Purpose / Aim of Study: To examine the feasibility of blood flow restricted
low- load exercise (LL- BFRE) in patients suffering from orthopedic lower limb
(LL) injuries and measure outcomes on muscle strength, functional capacity,
jump height, and patient-reported outcome measures (PROM).
Materials and Methods: 14 patients (52 +/-17 years) diagnosed with variuos
orthopedic lower limb injuries were included. The patients performed LL-BFRE
for 4-8 weeks. LL-BFRE comprised of unilateral leg press with concurrent partial
blood restriction (40% occlusion pressure) at 30%1RM. Two protocols were
tested containing 4 rounds with 30-sec rest pauses. Participants completed 3
functional performance tests, 2 strength-based tests, 1 hop- test, and KOOS.
Findings / Results: Three patients dropped out due to exercise-related adverse
events (2) and personal reasons (1). Thigh Circumferences and Isometric
Knee Extensor Strength (injured side) increased from 45.2 ± 3.1 cm to 46.0 ±
4.0 cm (p=0.05) and 3.1 ± 0.8 N/m to 4.3 ± 1.4 N/m (p=0.01). 30-seconds
sit to stand improved from 16 ± 7 repetitions to 19 ± 10 repetitions (p=0.02).
KOOS Pain, Symptoms and Sport & Rec improved from 62 ± 19 points to 74 ±
20 point (p=0.03), 58 ± 16 points to 67 ± 15 points (p=0.03), and 22 ± 18
points to 40 ± 24 points (p=0.03).
Conclusions: LL-BFRE was feasible in patients suffering from different LLinjuries.
The intervention may improve
| Original language | Danish |
|---|---|
| Publication date | 31 Oct 2019 |
| Number of pages | 1 |
| Publication status | Published - 31 Oct 2019 |
| Event | DOS kongressen 2019: Dansk ortopædisk årsmøde - Vingsted centret, Vejle, Denmark Duration: 23 Oct 2019 → 25 Oct 2019 https://www.ortopaedi.dk/dos-kongressen-2019/ |
Conference
| Conference | DOS kongressen 2019 |
|---|---|
| Location | Vingsted centret |
| Country/Territory | Denmark |
| City | Vejle |
| Period | 23/10/2019 → 25/10/2019 |
| Internet address |