Impact of heat therapy on recovery after eccentric exercise in humans

Kim, Kyoungrae; Kuang, Shihuan; Song, Qifan; Gavin, Timothy P.; Roseguini, Bruno T.

doi:10.1152/japplphysiol.00910.2018

Cited by 23 publications

(42 citation statements)

References 56 publications

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“…These initial testing sessions were separated by a minimum of 48 hours. At least one week after visit 3, resting muscle biopsies were collected from the vastus lateralis of the left and right legs of each subject (22,25). The 8-week intervention protocol commenced at least three days after the muscle biopsy procedures.…”

Section: Experimental Designmentioning

confidence: 99%

“…Participants were asked to put on water-circulating trousers on top of shorts or underwear (Med-Eng, Ottawa, Canada). This garment was customized with an extensive network of medical-grade polyvinyl chloride tubing that covered the thighs and buttocks (22,25). In the thigh assigned to receive HT, water at ~52ºC was perfused through the garment for 90 min with a goal to increase leg skin temperature to ∼39.5-40°C (22,25).…”

Section: Heat Treatmentmentioning

confidence: 99%

“…This garment was customized with an extensive network of medical-grade polyvinyl chloride tubing that covered the thighs and buttocks (22,25). In the thigh assigned to receive HT, water at ~52ºC was perfused through the garment for 90 min with a goal to increase leg skin temperature to ∼39.5-40°C (22,25). Previous studies that employed a similar approach revealed that this regimen causes muscle temperature to increase from a baseline of ~33-34ºC to approximately 37ºC (8,17).…”

Section: Heat Treatmentmentioning

confidence: 99%

“…Healthy young adults had one randomly selected thigh treated with HT using a water-circulating garment perfused with water at ~52ºC for 90 min, while the opposite thigh served as a control. This heat modality and protocol were selected because: 1) a single 90-min session of local HT increases the skeletal muscle expression of heat shock proteins and angiogenic factors (25); and 2) five daily 90-min sessions of local HT hastens functional recovery following eccentric exercise-induced muscle damage (22). Based upon these previous findings, we hypothesized that daily exposure to heat stress would enhance muscle strength, promote muscle capillary growth and the expression of angiogenic mediators, and increase muscle mitochondrial content.…”

Section: Introductionmentioning

confidence: 99%

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Effects of repeated local heat therapy on skeletal muscle structure and function in humans

Kim

Reid

Casey

et al. 2020

Journal of Applied Physiology

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Introduction Short‐term exposure to heat stress has been shown to enhance muscle strength and elicit mitochondrial adaptations in human skeletal muscle. We recently documented that exposure to five sessions of heat therapy (HT) accelerates the recovery of fatigue resistance following exercise‐induced muscle damage in humans. However, the long‐term impact of repeated exposure to local heat stress on contractile function and skeletal muscle structure remains unknown. The purpose of the present study was to examine the effects of 8 weeks of daily treatment with local HT on muscle strength, fatigability, fiber size and mitochondrial content in humans. Methods Twelve healthy young adults (23.6±1.4 years, BMI 24.9±0.9 kg/m2) had one randomly selected thigh treated with daily HT for 8 consecutive weeks while the opposite thigh served as a control. A water‐circulating garment perfused with water at ~52ºC was used to apply HT for 90 min daily. Knee extensor strength (single peak torque during 3 repetition maximums at 180°/s and 60°/s) and fatigue resistance (total work during 40 repetition maximums at 180°/s) were assessed using isokinetic dynamometry before and after 4 and 8 weeks of treatment. Biopsies were obtained from the vastus lateralis muscle for the determination of myofiber cross‐sectional area and maximal citrate synthase activity. Results Treatment with HT elicited an increase in thigh skin temperature (39.8±0.1ºC), while skin temperature remained at baseline levels in the control thigh (32.4± 0.1ºC). A significant treatment effect was observed for the changes from baseline in peak isokinetic torque at 180º/s (p=0.04). On average, the changes in peak isokinetic torque from baseline for HT were ~2 fold higher than control at week 4 (Control: 4.1±3.7 Nm vs. HT: 9±4.6 Nm) and ~4 fold higher at week 8 (Control: 1.7±2.7 Nm vs. HT: 7.7±2.9 Nm). There were no differences between treatments for peak isokinetic torque at 60º/s, myofiber cross‐sectional area and citrate synthase activity. Conclusion These results indicate that daily exposure to HT for 8 weeks enhances muscle strength in humans. Local HT may be a practical therapeutic approach to improve muscle function in individuals with limited mobility and skeletal muscle weakness. Support or Funding Information Support: American College of Sports Medicine Research Endowment This abstract is from the Experimental Biology 2019 Meeting. There is no full text article associated with this abstract published in The FASEB Journal.

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Section: Experimental Designmentioning

confidence: 99%

Section: Heat Treatmentmentioning

confidence: 99%

Section: Heat Treatmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of repeated local heat therapy on skeletal muscle structure and function in humans

Kim

Reid

Casey

et al. 2020

Journal of Applied Physiology

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“…In contrast, after the outlined peak, heat therapy can support soft tissue repair, tissue nutrition and circulation [84,85]. Studies show a positive effect in gaining muscle strength associated with hypertrophy (10 weeks heat therapy without strength training) through provoked gene expression for growth and differentiation [12,86] enhanced recovery after eccentric resistance training with an acceleration of angiogenic factors in human knee extensor muscle [87] and an acceleration of muscle contractility properties and decreased muscle steadiness after whole-body heat therapy by sauna [83]. In contrast Frier et al emphasizes pre-exercise heat stress may inhibit increases in muscle mass, potentially caused by accumulation of heat shock proteins in lower limbs of rats [88].…”

Section: Treatments and Strategies To Target Exercise-induced Muscmentioning

confidence: 99%

Accelerating Recovery from Exercise-Induced Muscle Injuries in Triathletes: Considerations for Olympic Distance Races

Hotfiel

Mayer

Huettel

et al. 2019

Sports

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The triathlon is one of the fastest developing sports in the world due to expanding participation and media attention. The fundamental change in Olympic triathlon races from a single to a multistart event is highly demanding in terms of recovery from and prevention of exercise-induced muscle injures. In elite and competitive sports, ultrastructural muscle injuries, including delayed onset muscle soreness (DOMS), are responsible for impaired muscle performance capacities. Prevention and treatment of these conditions have become key in regaining muscular performance levels and to guarantee performance and economy of motion in swimming, cycling and running. The aim of this review is to provide an overview of the current findings on the pathophysiology, as well as treatment and prevention of, these conditions in compliance with clinical implications for elite triathletes. In the context of DOMS, the majority of recovery interventions have focused on different protocols of compression, cold or heat therapy, active regeneration, nutritional interventions, or sleep. The authors agree that there is a compelling need for further studies, including high-quality randomized trials, to completely evaluate the effectiveness of existing therapeutic approaches, particularly in triathletes. The given recommendations must be updated and adjusted, as further evidence emerges.

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Skeletal muscle oxidative adaptations following localized heat therapy

2023

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Repeated heat treatment has been shown to induce oxidative adaptations in cell cultures and rodents, but similar work within human models is scarce. This study investigated the effects of 6 weeks of localized heat therapy on near-infrared spectroscopy-(NIRS) derived indices of muscle oxidative and microvascular function. Twelve physically active participants (8 males and 4 females, age: 34.9 ± 5.9 years, stature: 175 ± 7 cm, body mass: 76.7 ± 13.3 kg) undertook a 6-week intervention, where adhesive heat pads were applied for 8 h/day, 5 days/week, on one calf of each participant, while the contralateral leg acted as control. Prior to and following the intervention, the microvascular function was assessed using NIRS-based methods, where 5 min of popliteal artery occlusion was applied, and the reperfusion (i.e., re-saturation rate, re-saturation amplitude, and hyperemic response) was monitored for 2 min upon release. Participants also performed a 1-min isometric contraction of the plantar flexors (30% maximal voluntary contraction), following which a further 2 min interval was undertaken for the assessment of recovery kinetics. A 20-min time interval was allowed before the assessment protocol was repeated on the contralateral leg. Repeated localized heating of the gastrocnemius did not influence any of the NIRS-derive indices of microvascular or oxidative function (p > 0.05) following 6 weeks of treatment. Our findings indicate that localized heating via the use of adhesive heat pads may not be a potent stimulus for muscle adaptations in physically active humans.

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Impact of heat therapy on recovery after eccentric exercise in humans

Cited by 23 publications

References 56 publications

Effects of repeated local heat therapy on skeletal muscle structure and function in humans

Effects of repeated local heat therapy on skeletal muscle structure and function in humans

Accelerating Recovery from Exercise-Induced Muscle Injuries in Triathletes: Considerations for Olympic Distance Races

Skeletal muscle oxidative adaptations following localized heat therapy

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