Abstract:
BACKGROUND AND OBJECTIVE:Phototherapy plus dynamic exercise can enhance physical performance and improve health. The aim of our study was to evaluate the effect of low-level laser therapy (LLLT) associated with high intensity resistance training (HIT) on cardiac autonomic and muscle metabolic responses in rats. STUDY DESIGN/MATERIALS AND METHODS:Forty Wistar rats were randomized into 4 groups: sedentary control (CG), HIT, LLLT and HIT + LLLT. HIT was performed 3 times/week for 8 weeks with loads attached to the tail of the animal. The load was gradually increased by 10% of body mass until reaching a maximal overload. For LLLT, irradiation parameters applied to the tibialis anterior (TA) muscle were as follows: infrared laser (780 nm), power of 15 mW for 10 seconds, leading to an irradiance of 37.5 mW/cm(2), energy of 0.15 J per point and fluency of 3.8 J/cm(2). Blood lactate (BL), matrix metalloproteinase gelatinase A (MMP(-2)) gene expression and heart rate variability (HRV) indices were performed. RESULTS:BL significantly increased after 8-weeks for HIT, LLLT and HIT + LLLT groups. However, peak lactate when normalized by maximal load was significantly reduced for both HIT and HIT + LLLT groups (P<0.05). MMP-2 in the active form was significantly increased after HIT, LLLT and HIT + LLLT compared tom the CG (P<0.05). There was a significant reduction in low frequency [LF (ms(2))] and increase in high frequency [HF (un)] and HF (ms(2))] for the HIT, LLLT and HIT + LLLT groups compared with the CG (P < 0.05). However, the LF/HF ratio was further reduced in the LLLT and HIT + LLLT groups compared to the CG and HIT group (P < 0.05). CONCLUSION:These results provide evidence for the positive benefits of LLLT and HIT with respect to enhanced muscle metabolic and cardiac autonomic function in Wistar rats.
journal_name
Lasers Surg Medjournal_title
Lasers in surgery and medicineauthors
Paolillo FR,Arena R,Dutra DB,de Cassia Marqueti Durigan R,de Araujo HS,de Souza HC,Parizotto NA,Cipriano G Jr,Chiappa G,Borghi-Silva Adoi
10.1002/lsm.22298subject
Has Abstractpub_date
2014-12-01 00:00:00pages
796-803issue
10eissn
0196-8092issn
1096-9101journal_volume
46pub_type
杂志文章abstract:BACKGROUND AND OBJECTIVE:Photodynamic therapy (PDT) has been used as a therapeutic alternative to treat periodontitis, especially in challenging sites that require additional periodontal therapy such as residual pockets. The aim of this split-mouth randomized trial was to evaluate the microbiological and clinical effec...
journal_title:Lasers in surgery and medicine
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abstract:BACKGROUND AND OBJECTIVE:Laryngeal lesions are usually investigated by microlaryngoscopy, biopsy, and histopathology. This study aimed to evaluate the combined use of Narrow Band Imaging (NBI) and High-Speed Imaging (HSI) in the differentiation of glottic lesions in awake patients. STUDY DESIGN:Prospective diagnostic ...
journal_title:Lasers in surgery and medicine
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abstract::In keeping with current interest in bactericidal effects of lasers to treat localized infection, we examined the effect of CO2 laser light on three bacterial species. Cell monolayers were placed atop filters minimizing the presence of extracellular water. Samples were exposed to irradiance values between 0 and 520 W/c...
journal_title:Lasers in surgery and medicine
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doi:10.1002/1096-9101(1994)14:2<164::aid-lsm1900140209
更新日期:1994-01-01 00:00:00
abstract:OBJECTIVE:To evaluate the effects of laser monotherapy on quality of life in breast cancer patients with chronic radiation dermatitis. STUDY DESIGN:A prospective, IRB-approved study was conducted at Memorial Sloan Kettering Cancer Center. Breast cancer patients with chronic radiation dermatitis completed health-relate...
journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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abstract::Since most techniques of refractive surgery currently in use or being developed have the potential for significant side effects, there is a need for investigating alternative procedures. We herein report on the use of a pulsed CO2 laser beam delivered through a pair of complementary axicons to produce a ring of stroma...
journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
pub_type: 杂志文章,随机对照试验
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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更新日期:1992-01-01 00:00:00
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journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
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journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
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journal_title:Lasers in surgery and medicine
pub_type: 杂志文章
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journal_title:Lasers in surgery and medicine
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更新日期:1986-01-01 00:00:00
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journal_title:Lasers in surgery and medicine
pub_type: 临床试验,杂志文章
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