Effects of Intermittent Versus Continuous Blood Flow Restriction Training on Pain, Functional Ability, Muscle Strength and Exercise Perception Among Female Patients With Grade II Knee Osteoarthritis
Visão geral do estudo
Status
Status
Condições
Condições
Intervenção / Tratamento
Intervenção / Tratamento
Descrição detalhada
Tipo de estudo
Tipo de estudo
Inscrição (Real)
Inscrição
Estágio
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
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Punjab Province
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Lahore, Punjab Province, Paquistão, 05450
- Social Security Hospital, Lahore
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Critérios de participação
Critérios de elegibilidade
Critérios de elegibilidade
Idades elegíveis para estudo
- Adulto
Aceita Voluntários Saudáveis
Descrição
Inclusion Criteria:
- Female patients aged 40-49 years.
- Diagnosed with Grade II knee osteoarthritis (radiographically confirmed).
- Moderate to severe pain (NPRS 4-7).
- Ability to participate in exercise programs.
Exclusion Criteria:
- Severe cardiovascular disease.
- Uncontrolled hypertension.
- Recent knee surgery or intra-articular injection.
- Active cancer or metastatic disease
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Tratamento
- Alocação: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Dobro
Número de braços
Armas e Intervenções
Grupo de Participantes / BraçoGrupo de Participantes / Braço |
Intervenção / TratamentoIntervenção / Tratamento |
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Experimental: Intermittent blood flow
Participants will perform low-load resistance exercises at 20-30% of one-repetition maximum (1RM) combined with intermittent BFR application.
Cuff pressure will be applied during exercise sets and released during rest intervals.
Each session will include a 10-minute warm-up , followed by a 30-minute structured exercise program and a 15-minute cool-down.
Sessions will be conducted 2-3 times per week for a duration of 8-12 weeks, with progressive overload applied as tolerated.
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Hamstrings stretching, 3 repetitions of 30 s, Bridge with isometric contraction of the transversus abdominis-CORE training, 3 repetitions of 30 s, Hip abduction with weights , 3 sets of 10 repetitions, Calm exercises with an elastic band, 3 sets of 10 repetitions, Calf raises with weights , 3 sets of 10 repetitions, Sensori-motor training at mini-trampoline, 3 repetitions of 30 s, Leg press, 0-60°, 4 sets of 10 repetitions, Seated knee extension , 90-0° of knee flexion, 4 sets of 10 repetitions.
In the iBFR group, the cuff is deflated during each set's rest period and is quickly reinflated to the target pressure 20-30 s into the rest, ensuring the entire rest period does not exceed 45 s .
Intensity: 20- 30% of 1RM with BFR cuffs, Frequency: 3 sessions per week for 12 weeks.
Each session comprises a 10-min warm up with static cycling, a 30-min exercise program, and a 15-min cool down.
BFR cuff from Hhccteo company will be used.
pressure:130-150 mmHg, cuff width 5-7cm
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Experimental: Continuous blood flow training
Participants will perform the same low-load resistance exercise protocol (20-30% 1RM) with continuous BFR application.
Cuff pressure will be maintained throughout both exercise and rest periods.
Exercise selection, session structure (warm-up, training, cool-down), frequency (2-3 sessions/week), and duration (8-12 weeks) will be identical to Group A to ensure comparability between groups
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Hamstrings stretching, 3 repetitions of 30 s, Bridge with isometric contraction of the transversus abdominis-CORE training, 3 repetitions of 30 s, Hip abduction with weights (side lying), 3 sets of 10 repetitions, Calm exercises (side lying) with an elastic band, 3 sets of 10 repetitions, Calf raises with weights (standing), 3 sets of 10 repetitions, Sensori motor training (standing) at mini-trampoline, 3 repetitions of 30 s, Leg press (machine), 0-60°, 4 sets of 10 repetitions, Seated knee extension, 90-0° of knee flexion, 4 sets of 10 repetitions.
In the cBFR group, the Intensity of excersise will be 20-30% of 1RM with BFR cuffs ,Frequency: 3 sessions per week for 12 weeks.
Each session comprises a 10-min warmup with static cycling, a 30-min exercise program, and a 15-min cool down.
BFR cuff from Hhccteo company will be used.
The parameters will be pressure: 130-150 mmHg, cuff width 5-7 cm.
Progressive overload will be applied by gradually increasing repetitions or load as tolerated
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O que o estudo está medindo?
Medidas de resultados primários
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
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Manual Muscle Testing (MMT)
Prazo: baseline, 6 weeks (post intervention), 12 weeks (follow up)
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Quadriceps strength will be assessed using standardized isometric testing procedure.
It grades muscle strength on a 0-5 scale based on the ability to move a joint against gravity and external resistance.
A grade of 0 indicates no visible or palpable muscle contraction, while 1 (Trace) represents a slight contraction without actual movement.
Grade 2 (Poor) describes the ability to move the joint through its full range only when gravity is eliminated, whereas Grade 3 (Fair) allows movement through the full range against gravity but without resistance.
Grade 4 (Good) indicates movement against moderate resistance, and Grade 5 (Normal) reflects full range of motion against maximal resistance, representing normal muscle strength
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baseline, 6 weeks (post intervention), 12 weeks (follow up)
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Numeric Pain Rating Scale (NPRS)
Prazo: baseline, 6 weeks (post intervention), 12 weeks( followup)
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The NPRS is a10-point scale (0-10) used to quantify pain intensity.
Pain severity will be interpreted as no pain (0), mild pain (1-3), moderate pain (4-6), and severe pain (7-10).
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baseline, 6 weeks (post intervention), 12 weeks( followup)
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Modified Borg Scale
Prazo: baseline, 6 weeks( post intervention), 12 weeks (follow up)
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It is used to assess ratings of exercise-related perceived exertion.
The scale ranges from (0 to 10), where 0 means no breathlessness at all and 10 means maximium breathlessness.
According to this, 0-2 for Minimal exertion, 3-4 for Moderate (often target for rehab), 5-6 for Hard and 7-10 is for Very hard to maximal
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baseline, 6 weeks( post intervention), 12 weeks (follow up)
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Colaboradores e Investigadores
Patrocinador
Patrocinador
Publicações e links úteis
Publicações Gerais
- Hughes L, Paton B, Rosenblatt B, Gissane C, Patterson SD. Blood flow restriction training in clinical musculoskeletal rehabilitation: a systematic review and meta-analysis. Br J Sports Med. 2017 Jul;51(13):1003-1011. doi: 10.1136/bjsports-2016-097071. Epub 2017 Mar 4.
- Centner C, Wiegel P, Gollhofer A, Konig D. Effects of Blood Flow Restriction Training on Muscular Strength and Hypertrophy in Older Individuals: A Systematic Review and Meta-Analysis. Sports Med. 2019 Jan;49(1):95-108. doi: 10.1007/s40279-018-0994-1.
- Sorensen B, Aagaard P, Hjortshoj MH, Hansen SK, Suetta C, Couppe C, Magnusson SP, Johannsen FE. Physiological and clinical effects of low-intensity blood-flow restricted resistance exercise compared to standard rehabilitation in adults with knee osteoarthritis-Protocol for a randomized controlled trial. PLoS One. 2023 Dec 14;18(12):e0295666. doi: 10.1371/journal.pone.0295666. eCollection 2023.
- Harper SA, Roberts LM, Layne AS, Jaeger BC, Gardner AK, Sibille KT, Wu SS, Vincent KR, Fillingim RB, Manini TM, Buford TW. Blood-Flow Restriction Resistance Exercise for Older Adults with Knee Osteoarthritis: A Pilot Randomized Clinical Trial. J Clin Med. 2019 Feb 21;8(2):265. doi: 10.3390/jcm8020265.
- Freitas EDS, Miller RM, Heishman AD, Aniceto RR, Silva JGC, Bemben MG. Perceptual responses to continuous versus intermittent blood flow restriction exercise: A randomized controlled trial. Physiol Behav. 2019 Dec 1;212:112717. doi: 10.1016/j.physbeh.2019.112717. Epub 2019 Oct 17.
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Início do estudo
Conclusão Primária (Real)
Conclusão Primária
Conclusão do estudo (Real)
Conclusão do estudo
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Enviado pela primeira vez que atendeu aos critérios de CQ
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Última atualização enviada que atendeu aos critérios de controle de qualidade
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- UBAS/ERB/26/04/012
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