Knee flexion strength is significantly reduced following competition in semi-professional Australian Rules football athletes : Implications for injury prevention programs
- Charlton, Paula, Raysmith, Benjamin, Wollin, Martin, Rice, Simon, Purdam, Craig, Clark, Ross, Drew, Michael
- Authors: Charlton, Paula , Raysmith, Benjamin , Wollin, Martin , Rice, Simon , Purdam, Craig , Clark, Ross , Drew, Michael
- Date: 2018
- Type: Text , Journal article
- Relation: Physical Therapy in Sport Vol. 31, no. (2018), p. 9-14
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- Description: Objectives: To evaluate strength and flexibility measures pre- and post- Australian Football (AF) competition to determine their potential utility as secondary prevention measures. Design: Cohort study. Setting: Semi-professional AF club. Participants: Ten male AF athletes (mean ± SD; age, 21.3 ± 2.2 years; height, 186.1 ± 6.3 cm; weight, 83.5 ± 8.6 kg). Main Outcome Measures: Maximal unilateral isometric knee flexion strength performed in 45 degrees of hip flexion and 30 degrees of knee flexion, flexibility measures of hip and knee extension and ankle dorsiflexion. All outcome measures were evaluated pre-match to determine baseline measurements and repeated acutely post-match and at 26, 50 and 74 h following. Comparisons were made between baseline measures and all other time points. Results: Knee flexion strength was significantly reduced at a group level acutely (−122.8N, 95%CI −156.2 to −89.4, p = 0.000) and at 26 h (−89.6N, 95%CI −122.9 to −56.2, p = 0.000) following competition. Hamstring flexibility was significantly reduced at all time periods following competition (all p < 0.05), however these values were not clinically meaningful. Conclusions: Knowledge that unilateral isometric knee flexion strength returns to pre-competition levels by 50 h following match-play in AF athletes is valuable for planning recovery time frames and may inform implementation of secondary prevention strategies. © 2018 Elsevier Ltd
- Authors: Charlton, Paula , Raysmith, Benjamin , Wollin, Martin , Rice, Simon , Purdam, Craig , Clark, Ross , Drew, Michael
- Date: 2018
- Type: Text , Journal article
- Relation: Physical Therapy in Sport Vol. 31, no. (2018), p. 9-14
- Full Text:
- Reviewed:
- Description: Objectives: To evaluate strength and flexibility measures pre- and post- Australian Football (AF) competition to determine their potential utility as secondary prevention measures. Design: Cohort study. Setting: Semi-professional AF club. Participants: Ten male AF athletes (mean ± SD; age, 21.3 ± 2.2 years; height, 186.1 ± 6.3 cm; weight, 83.5 ± 8.6 kg). Main Outcome Measures: Maximal unilateral isometric knee flexion strength performed in 45 degrees of hip flexion and 30 degrees of knee flexion, flexibility measures of hip and knee extension and ankle dorsiflexion. All outcome measures were evaluated pre-match to determine baseline measurements and repeated acutely post-match and at 26, 50 and 74 h following. Comparisons were made between baseline measures and all other time points. Results: Knee flexion strength was significantly reduced at a group level acutely (−122.8N, 95%CI −156.2 to −89.4, p = 0.000) and at 26 h (−89.6N, 95%CI −122.9 to −56.2, p = 0.000) following competition. Hamstring flexibility was significantly reduced at all time periods following competition (all p < 0.05), however these values were not clinically meaningful. Conclusions: Knowledge that unilateral isometric knee flexion strength returns to pre-competition levels by 50 h following match-play in AF athletes is valuable for planning recovery time frames and may inform implementation of secondary prevention strategies. © 2018 Elsevier Ltd
Tendon neuroplastic training : Changing the way we think about tendon rehabilitation : A narrative review
- Rio, Ebonie, Kidgell, Dawson, Lorimer Moseley, Graham, Gaida, Jamie, Docking, Sean, Purdam, Craig, Cook, Jill
- Authors: Rio, Ebonie , Kidgell, Dawson , Lorimer Moseley, Graham , Gaida, Jamie , Docking, Sean , Purdam, Craig , Cook, Jill
- Date: 2016
- Type: Text , Journal article
- Relation: British Journal of Sports Medicine Vol. 50, no. 4 (2016), p. 209-215
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- Description: Tendinopathy can be resistant to treatment and often recurs, implying that current treatment approaches are suboptimal. Rehabilitation programmes that have been successful in terms of pain reduction and return to sport outcomes usually include strength training. Muscle activation can induce analgesia, improving self-efficacy associated with reducing one's own pain. Furthermore, strength training is beneficial for tendon matrix structure, muscle properties and limb biomechanics. However, current tendon rehabilitation may not adequately address the corticospinal control of the muscle, which may result in altered control of muscle recruitment and the consequent tendon load, and this may contribute to recalcitrance or symptom recurrence. Outcomes of interest include the effect of strength training on tendon pain, corticospinal excitability and short interval cortical inhibition. The aims of this concept paper are to: (1) review what is known about changes to the primary motor cortex and motor control in tendinopathy, (2) identify the parameters shown to induce neuroplasticity in strength training and (3) align these principles with tendon rehabilitation loading protocols to introduce a combination approach termed as tendon neuroplastic training. Strength training is a powerful modulator of the central nervous system. In particular, corticospinal inputs are essential for motor unit recruitment and activation; however, specific strength training parameters are important for neuroplasticity. Strength training that is externally paced and akin to a skilled movement task has been shown to not only reduce tendon pain, but modulate excitatory and inhibitory control of the muscle and therefore, potentially tendon load. An improved understanding of the methods that maximise the opportunity for neuroplasticity may be an important progression in how we prescribe exercise-based rehabilitation in tendinopathy for pain modulation and potentially restoration of the corticospinal control of the muscle-tendon complex.
- Authors: Rio, Ebonie , Kidgell, Dawson , Lorimer Moseley, Graham , Gaida, Jamie , Docking, Sean , Purdam, Craig , Cook, Jill
- Date: 2016
- Type: Text , Journal article
- Relation: British Journal of Sports Medicine Vol. 50, no. 4 (2016), p. 209-215
- Full Text:
- Reviewed:
- Description: Tendinopathy can be resistant to treatment and often recurs, implying that current treatment approaches are suboptimal. Rehabilitation programmes that have been successful in terms of pain reduction and return to sport outcomes usually include strength training. Muscle activation can induce analgesia, improving self-efficacy associated with reducing one's own pain. Furthermore, strength training is beneficial for tendon matrix structure, muscle properties and limb biomechanics. However, current tendon rehabilitation may not adequately address the corticospinal control of the muscle, which may result in altered control of muscle recruitment and the consequent tendon load, and this may contribute to recalcitrance or symptom recurrence. Outcomes of interest include the effect of strength training on tendon pain, corticospinal excitability and short interval cortical inhibition. The aims of this concept paper are to: (1) review what is known about changes to the primary motor cortex and motor control in tendinopathy, (2) identify the parameters shown to induce neuroplasticity in strength training and (3) align these principles with tendon rehabilitation loading protocols to introduce a combination approach termed as tendon neuroplastic training. Strength training is a powerful modulator of the central nervous system. In particular, corticospinal inputs are essential for motor unit recruitment and activation; however, specific strength training parameters are important for neuroplasticity. Strength training that is externally paced and akin to a skilled movement task has been shown to not only reduce tendon pain, but modulate excitatory and inhibitory control of the muscle and therefore, potentially tendon load. An improved understanding of the methods that maximise the opportunity for neuroplasticity may be an important progression in how we prescribe exercise-based rehabilitation in tendinopathy for pain modulation and potentially restoration of the corticospinal control of the muscle-tendon complex.
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