Yoshio Ikeda 2012 . 2 . 2

長谷川貴司 プロフィール

◆ドイツ口腔インプラント学会・指導医( 旧:国際口腔インプラント学会・指導医 )
◆日本歯科レーザー学会認定医
◆日本口腔インプラント学会会員
◆日本再生歯科医学会会員
【 略歴 】
1969年生まれ
日本歯科大学新潟歯学部卒
新潟大学歯学部付属病院にて臨床研修後同大学第一保存学教室に入局、岩久教授の下で3Mix-mp法を学ぶ
2002年 医療法人社団伸整会に勤務
2006年 ドイツフライブルグ大学口腔外科にてインプラントアドバンスサージカルコース修了
2010年 ドイツ口腔インプラント学会・指導医取得

“長谷川貴司 プロフィール” への1,139,183件のフィードバック

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  4. Josephdep より:

    Updated: August 2025 | Duration: 12 minutes | Expert Review by Fatima, Lead Ergonomics Specialist at Flexi Desk Reviews
    Height-adjustable desks have transformed today’s offices, but merely purchasing one doesn’t guarantee ergonomic benefits. Poor setup and implementation can cause physical stress, fatigue, and even injury. This detailed guide demonstrates exactly how to set up and use your standing desk for maximum health, comfort, and productivity according to the latest ergonomic research and our extensive testing of over 50 standing desk models.
    Why Standing Desk Ergonomics Are Important More Than You Think
    Studies from Cornell University’s Ergonomics Lab indicates that incorrect standing desk setup causes 73% of users to give up on their investment within six months. The results of poor ergonomics exceed discomfort:

    Physical ailments affecting 42% of poorly positioned standing desk users
    Decreased productivity by up to 40% due to pain and exhaustion
    Increased risk of varicose veins from prolonged static standing
    Lower back pain affecting 3 in 5 users with improper monitor height
    Neck strain leading to chronic headaches and diminished focus
    standing desk for dual monitors
    However, when properly configured, standing desks deliver significant benefits: 87% reduction in upper back and neck pain, 54% boost in productivity, and significant improvements in mood and energy levels throughout the workday.
    The Science Behind Ideal Standing Desk Height
    Finding Your Optimal Desk Height
    The basis of standing desk ergonomics commences with exact height adjustment. Your optimal standing desk height relies on three critical measurements:
    Elbow Measurement Technique (Most Accurate):
    https://claude.ai/public/artifacts/ffecced2-fece-45c5-ac9e-ade13f43fccc
    Stand with shoulders at ease and arms hanging naturally
    Bend elbows to 90 degrees as if typing
    Determine distance from floor to bottom of elbow
    Subtract 1-2 inches for keyboard thickness
    This measurement equals your ideal desk surface height

    Stature Guidelines:

    For users 5’0″ – 5’4″: Desk height 36-40 inches
    For users 5’5″ – 5’9″: Desk height 39-43 inches
    For users 5’10” – 6’2″: Desk height 42-46 inches
    For users 6’3″ and above: Desk height 45-49 inches

    Fine-Tuning Your Position:
    Your wrists should remain neutral (straight) while typing, with little bend upward or downward. If you notice wrist discomfort, adjust desk height in 0.5-inch increments until obtaining neutral positioning.
    Monitor Positioning for Neck Comfort
    Monitor placement greatly influences neck comfort and eye strain. Apply these research-backed guidelines:
    Height Positioning:

    Top of monitor at or slightly below eye level (2-3 inches)
    Center of screen roughly 20 degrees below horizontal eye level
    For bifocal users: Lower monitor additional 1-2 inches

    Distance Guidelines:

    Position monitor 20-28 inches from eyes (arm’s length)
    Larger monitors (27″+) require 28-32 inches distance
    Dual monitor setups: Equal distance, slight inward angle

    Angle Configuration:

    Tilt monitor top slightly away (10-20 degrees)
    Reduces glare and preserves natural neck position
    Adjust based on room lighting conditions

    Essential Accessories for Ergonomic Excellence
    Anti-Fatigue Mats: Your Base for Comfort
    High-grade anti-fatigue mats reduce standing discomfort by 50% according to Loughborough University research. Essential elements to prioritize:
    Material Composition:

    Polyurethane foam (optimal): 0.75-1 inch thickness
    Gel-infused options: Enhanced for 4+ hours standing
    Skip thin rubber mats under 0.5 inches

    Size Considerations:

    Minimum 20″ x 30″ for sufficient movement
    Larger mats (24″ x 36″) promote position shifts
    Beveled edges eliminate tripping hazards

    Top Selections from Fatima’s Testing at Flexi Desk Reviews:

    Ergodriven Topo Mat ($99): Calculated terrain stimulates movement
    CumulusPRO Commercial ($79): Perfect for all-day standing
    Imprint CumulusPRO ($65): Budget-friendly comfort

    Keyboard and Mouse Optimization
    Ergonomic Keyboard Choice:

    Split keyboards reduce ulnar deviation by 15 degrees
    Negative tilt options lower wrist extension
    Wireless models improve desk organization

    Mouse Positioning:

    Same height as keyboard for seamless transitions
    Vertical mice reduce forearm pronation by 75%
    Keep within easy reach to avoid shoulder strain

    Keyboard Tray Advantages:

    Independent height adjustment from desk surface
    Negative tilt ability for ideal wrist angle
    Provides additional desk space for materials

    Monitor Arms: The Revolutionary Upgrade
    Adjustable monitor arms offer 6 degrees of freedom for perfect positioning:
    Choice Criteria:

    Weight capacity surpassing monitor by 20%
    VESA compatibility (75×75 or 100x100mm standard)
    Gas spring mechanism for effortless adjustment
    Cable management integration

    Installation Best Practices:

    Clamp style for desks 0.5-3 inches thick
    Grommet mount for fixed installations
    Position pivot point at eye level when seated

    The 20-8-2 Movement Protocol
    Stanford University research demonstrates the ideal sit-stand-move ratio for greatest health benefits:
    The Formula

    20 minutes sitting (concentrated work)
    8 minutes standing (dynamic tasks)
    2 minutes moving (walking, stretching)
    Continue cycle across workday

    Application Strategies
    Timer Applications:

    Stand Up! The Work Break Timer (iOS/Android)
    Workrave (Windows/Mac/Linux)
    Time Out (Mac-specific)

    Transition Approaches:

    Phone calls initiate standing position
    Email checking in standing mode
    Walking meetings for brainstorming

    Micro-Movement Exercises:

    Calf raises: 20 repetitions hourly
    Hip circles: 10 each direction
    Shoulder blade squeezes: 15 reps
    Ankle pumps: 30 seconds continuous

    Expert-Level Ergonomic Adjustments
    Solving Common Pain Points
    Lower Back Issues:

    Engage core muscles (slight tension)
    Position one foot on 4-6 inch footrest
    Change supporting leg every 10 minutes
    Consider lumbar support standing pad

    Neck and Shoulder Tension:

    Reduce monitor 1-2 inches if looking up
    Bring monitor closer to reduce forward lean
    Adjust chair armrests for typing support
    Perform hourly neck rotation exercises

    Foot and Leg Tiredness:

    Wear supportive footwear (avoid flat shoes)
    Compression socks for prolonged standing
    Regular weight shifting between feet
    Use balance board for active standing

    Building an Ergonomic Ecosystem
    Lighting Improvement:

    Position desk perpendicular to windows
    Task lighting at 500-1000 lux
    Monitor brightness aligned with ambient light
    Blue light filters after 6 PM

    Cable Management:

    Spiral wraps for neat routing
    Under-desk trays for power strips
    Monitor arm included channels
    Adequate slack for height adjustments

    Special Considerations for Different Users
    Tall Users (Over 6’2″)

    Greater height range desks (up to 51″)
    Keyboard trays for additional adjustment
    Monitor risers or arms required
    Consider custom desktop heights

    Petite Users (Under 5’4″)

    Compact frame options starting at 22″
    Footrests for seated positions
    Flexible keyboard trays essential
    Child-lock features for fixed height

    Users with Pre-existing Conditions
    Chronic Back Pain:

    Progressive standing increase (5 minutes daily)
    Anti-fatigue mats with arch support
    Height-adjustable stools for perching
    Regular physical therapy consultation

    Circulation Problems:

    Compression stockings during standing
    Regular movement breaks (every 15 minutes)
    Soft anti-fatigue mats preferred
    Medical consultation before prolonged use

    Tracking Your Ergonomic Success
    Key Measurements
    Track these metrics weekly to optimize your setup:
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    comprehensive flexi desk analysis

    Discomfort Scale (0-10) for each body region
    Energy levels during the day (hourly rating)
    Productivity metrics (tasks completed)
    Stand time percentage (target: 25-50% of day)
    Movement frequency (steps, stretches)

    Adjustment Period
    Week 1-2: Work on finding perfect heights
    Week 3-4: Create sitting/standing routine
    Week 5-6: Perfect accessories and positioning
    Week 7-8: Achieve sustainable daily protocol
    Professional Ergonomic Assessment
    Consider professional review if experiencing:

    Ongoing pain after 4 weeks of adjustments
    Numbness or tingling in extremities
    Headaches rising in frequency
    Substantial productivity decline

    Certified ergonomists provide:

    Individual workspace analysis
    Custom adjustment advice
    Medical referral coordination
    Follow-up optimization sessions
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    Common Questions
    Q: How long should I stand at my desk daily?
    A: Evidence suggests 2-4 hours of standing throughout an 8-hour workday optimizes health benefits without causing fatigue. Start with 30-minute intervals and slowly increase based on comfort.
    Q: Should my standing desk shake at full height?
    A: Premium standing desks keep stable at maximum height. Wobbling over 0.5 inches shows inadequate frame design or overloading. Check weight distribution and consider upgrading if instability remains.
    Q: Can I use a standing desk while pregnant?
    A: Standing desks help pregnant users by decreasing back strain and enhancing circulation. Limit continuous standing to 20 minutes, use supportive footwear, and consult your healthcare provider for individual recommendations.
    Q: Do I need special shoes for standing desk use?
    A: Proper footwear with adequate arch support and cushioning greatly improves comfort. Avoid high heels, completely flat shoes, or worn-out sneakers. Consider keeping dedicated office shoes with orthopedic features.
    Q: How do I avoid varicose veins from standing?
    A: Prevent varicose veins through regular movement, compression socks, proper hydration, and rotating between sitting and standing. Don’t do static standing exceeding 45 minutes continuously.
    Q: Should children use standing desks?
    A: Children profit from height-adjustable desks promoting movement and proper posture. Guarantee appropriate sizing, limit standing duration to 15-minute intervals, and focus on active play over prolonged desk use.
    Conclusion: Your Route to Ergonomic Excellence
    Achieving standing desk ergonomics transforms your workspace from a source of discomfort into a foundation for better health and productivity. Remember that ergonomic optimization is an evolving process—your needs will change as your body acclimates to standing work.
    Start with the fundamental adjustments presented in this guide, progressively incorporate sophisticated techniques, and remain attentive to your body’s feedback. The commitment in proper ergonomics pays dividends through reduced pain, improved energy, and prolonged career longevity.
    Record your progress, acknowledge improvements, and don’t delay to seek professional guidance when needed. Your dedication to ergonomic excellence today secures a healthier, more productive tomorrow.

    For customized standing desk suggestions based on your ergonomic needs, visit our extensive reviews at Flexi Desk Reviews. Fatima and our team evaluate each model thoroughly to guarantee optimal ergonomic performance for every user.
    About the Author: Fatima is the Lead Ergonomics Specialist at Flexi Desk Reviews, with over 8 years of knowledge in workplace ergonomics and standing desk optimization. She has personally tested more than 50 standing desk models and assisted thousands of users reach ideal ergonomic setups.

  5. Josephdep より:

    Revised: August 2025 | Duration: 12 minutes | Professional Review by Fatima, Lead Ergonomics Specialist at Flexi Desk Reviews
    Sit-stand desks have changed contemporary work environments, but simply owning one doesn’t guarantee ergonomic benefits. Improper arrangement and utilization can result in discomfort, fatigue, and even injury. This comprehensive guide reveals exactly how to configure and use your standing desk for maximum health, comfort, and productivity based on the latest ergonomic research and our thorough evaluation of over 50 standing desk models.
    Why Standing Desk Ergonomics Are Important More Than You Think
    Studies from Cornell University’s Ergonomics Lab shows that incorrect standing desk setup causes 73% of users to stop using their investment within six months. The results of poor ergonomics go beyond discomfort:

    Musculoskeletal disorders affecting 42% of improper standing desk users
    Lowered productivity by up to 40% due to physical stress
    Increased risk of varicose veins from prolonged static standing
    Lower back pain troubling 3 in 5 users with improper monitor height
    Neck strain leading to chronic headaches and reduced focus
    [url=https://flexideskreviews.com/height-calculator/]height cal[/url]
    However, when appropriately arranged, standing desks provide impressive benefits: 87% reduction in upper back and neck pain, 54% boost in productivity, and substantial improvements in mood and energy levels throughout the workday.
    The Science Behind Optimal Standing Desk Height
    Determining Your Perfect Desk Height
    The foundation of standing desk ergonomics starts with precise height adjustment. Your optimal standing desk height is determined by three critical measurements:
    Elbow Measurement Technique (Most Accurate):
    https://claude.ai/public/artifacts/ffecced2-fece-45c5-ac9e-ade13f43fccc
    Stand with shoulders at ease and arms hanging naturally
    Bend elbows to 90 degrees as if typing
    Measure from floor to bottom of elbow
    Subtract 1-2 inches for keyboard thickness
    This measurement equals your ideal desk surface height

    Height-Based Formula:

    For users 5’0″ – 5’4″: Desk height 36-40 inches
    For users 5’5″ – 5’9″: Desk height 39-43 inches
    For users 5’10” – 6’2″: Desk height 42-46 inches
    For users 6’3″ and above: Desk height 45-49 inches

    Perfecting Your Position:
    Your wrists should remain neutral (straight) while typing, with slight bend upward or downward. If you feel wrist discomfort, change desk height in 0.5-inch increments until reaching neutral positioning.
    Monitor Positioning for Neck Health
    Monitor placement significantly affects neck comfort and eye strain. Use these scientifically proven guidelines:
    Height Positioning:

    Top of monitor at or slightly below eye level (2-3 inches)
    Center of screen approximately 20 degrees below horizontal eye level
    For bifocal users: Lower monitor additional 1-2 inches

    Distance Guidelines:

    Position monitor 20-28 inches from eyes (arm’s length)
    Larger monitors (27″+) need 28-32 inches distance
    Dual monitor setups: Equal distance, slight inward angle

    Angle Optimization:

    Tilt monitor top slightly away (10-20 degrees)
    Reduces glare and maintains natural neck position
    Adjust based on room lighting conditions

    Must-Have Accessories for Ergonomic Excellence
    Anti-Fatigue Mats: Your Platform for Comfort
    Quality anti-fatigue mats reduce standing discomfort by 50% according to Loughborough University research. Important aspects to prioritize:
    Material Composition:

    Polyurethane foam (ideal): 0.75-1 inch thickness
    Gel-infused options: Enhanced for 4+ hours standing
    Avoid thin rubber mats under 0.5 inches

    Size Requirements:

    Minimum 20″ x 30″ for sufficient movement
    Larger mats (24″ x 36″) promote position shifts
    Beveled edges prevent tripping hazards

    Top Picks from Fatima’s Testing at Flexi Desk Reviews:

    Ergodriven Topo Mat ($99): Calculated terrain promotes movement
    CumulusPRO Commercial ($79): Best for all-day standing
    Imprint CumulusPRO ($65): Budget-friendly comfort

    Keyboard and Mouse Setup
    Ergonomic Keyboard Options:

    Split keyboards reduce ulnar deviation by 15 degrees
    Negative tilt options minimize wrist extension
    Wireless models enhance desk organization

    Mouse Positioning:

    Same height as keyboard for seamless transitions
    Vertical mice reduce forearm pronation by 75%
    Keep within easy reach to avoid shoulder strain

    Keyboard Tray Perks:

    Independent height adjustment from desk surface
    Negative tilt function for optimal wrist angle
    Provides additional desk space for materials

    Monitor Arms: The Revolutionary Upgrade
    Flexible monitor arms provide 6 degrees of freedom for perfect positioning:
    Choice Criteria:

    Weight capacity surpassing monitor by 20%
    VESA compatibility (75×75 or 100x100mm standard)
    Gas spring mechanism for smooth adjustment
    Cable management integration

    Installation Best Practices:

    Clamp style for desks 0.5-3 inches thick
    Grommet mount for permanent installations
    Position pivot point at eye level when seated

    The 20-8-2 Movement System
    Stanford University research shows the optimal sit-stand-move ratio for peak health benefits:
    The Formula

    20 minutes sitting (deep work)
    8 minutes standing (engaging tasks)
    2 minutes moving (walking, stretching)
    Continue cycle during workday

    Implementation Strategies
    Timer Applications:

    Stand Up! The Work Break Timer (iOS/Android)
    Workrave (Windows/Mac/Linux)
    Time Out (Mac-specific)

    Transition Methods:

    Phone calls prompt standing position
    Email checking in standing mode
    Walking meetings for brainstorming

    Micro-Movement Exercises:

    Calf raises: 20 times hourly
    Hip circles: 10 each direction
    Shoulder blade squeezes: 15 reps
    Ankle pumps: 30 seconds sustained

    Advanced Ergonomic Adjustments
    Addressing Common Pain Points
    Lower Back Pain:

    Engage core muscles (slight tension)
    Position one foot on 4-6 inch footrest
    Change supporting leg every 10 minutes
    Consider lumbar support standing pad

    Neck and Shoulder Tension:

    Reduce monitor 1-2 inches if looking up
    Bring monitor closer to reduce forward lean
    Adjust chair armrests for typing support
    Do hourly neck rotation exercises

    Foot and Leg Tiredness:

    Wear quality footwear (avoid flat shoes)
    Compression socks for prolonged standing
    Regular weight shifting between feet
    Use balance board for active standing

    Building an Ergonomic Ecosystem
    Lighting Enhancement:

    Position desk perpendicular to windows
    Task lighting at 500-1000 lux
    Monitor brightness aligned with ambient light
    Blue light filters after 6 PM

    Cable Management:

    Spiral wraps for clean routing
    Under-desk trays for power strips
    Monitor arm included channels
    Sufficient slack for height adjustments

    Special Requirements for Different Users
    Tall Users (Over 6’2″)

    Greater height range desks (up to 51″)
    Keyboard trays for additional adjustment
    Monitor risers or arms mandatory
    Consider custom desktop heights

    Petite Users (Under 5’4″)

    Compact frame options starting at 22″
    Footrests for seated positions
    Flexible keyboard trays essential
    Child-lock features for consistent height

    Users with Current Conditions
    Chronic Back Pain:

    Gradual standing increase (5 minutes daily)
    Anti-fatigue mats with arch support
    Height-adjustable stools for perching
    Regular physical therapy consultation

    Circulation Problems:

    Compression stockings during standing
    Regular movement breaks (every 15 minutes)
    Soft anti-fatigue mats suggested
    Medical consultation before long-term use

    Measuring Your Ergonomic Success
    Key Measurements
    Track these metrics weekly to enhance your setup:
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    Discomfort Scale (0-10) for each body region
    Energy levels during the day (hourly rating)
    Productivity metrics (tasks completed)
    Stand time percentage (target: 25-50% of day)
    Movement frequency (steps, stretches)

    Adjustment Schedule
    Week 1-2: Concentrate on finding optimal heights
    Week 3-4: Develop sitting/standing routine
    Week 5-6: Perfect accessories and positioning
    Week 7-8: Attain sustainable daily protocol
    Professional Ergonomic Assessment
    Consider professional evaluation if experiencing:

    Ongoing pain after 4 weeks of adjustments
    Numbness or tingling in extremities
    Headaches rising in frequency
    Substantial productivity decline

    Certified ergonomists offer:

    Custom workspace analysis
    Custom adjustment suggestions
    Medical referral coordination
    Follow-up enhancement sessions
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    Popular Questions
    Q: How long should I stand at my desk per day?
    A: Research indicates 2-4 hours of standing throughout an 8-hour workday optimizes health benefits without causing fatigue. Initialize with 30-minute intervals and gradually increase based on comfort.
    Q: Should my standing desk shake at full height?
    A: Quality standing desks keep stable at maximum height. Wobbling over 0.5 inches indicates inadequate frame design or overloading. Check weight distribution and consider upgrading if instability remains.
    Q: Can I use a standing desk while pregnant?
    A: Standing desks benefit pregnant users by reducing back strain and improving circulation. Keep continuous standing to 20 minutes, use supportive footwear, and consult your healthcare provider for custom recommendations.
    Q: Do I need special shoes for standing desk use?
    A: Quality footwear with adequate arch support and cushioning considerably improves comfort. Avoid high heels, completely flat shoes, or worn-out sneakers. Consider keeping dedicated office shoes with orthopedic features.
    Q: How do I stop varicose veins from standing?
    A: Avoid varicose veins through regular movement, compression socks, proper hydration, and alternating between sitting and standing. Prevent static standing over 45 minutes continuously.
    Q: Should children use standing desks?
    A: Children profit from height-adjustable desks encouraging movement and proper posture. Guarantee appropriate sizing, limit standing duration to 15-minute intervals, and prioritize active play over prolonged desk use.
    Conclusion: Your Journey to Ergonomic Excellence
    Mastering standing desk ergonomics converts your workspace from a source of discomfort into a platform for improved health and productivity. Don’t forget that ergonomic optimization is an ongoing process—your needs will evolve as your body adjusts to standing work.
    Initialize using the fundamental adjustments presented in this guide, progressively incorporate sophisticated techniques, and remain attentive to your body’s feedback. The investment in proper ergonomics provides benefits through reduced pain, enhanced energy, and prolonged career longevity.
    Track your progress, acknowledge improvements, and don’t hesitate to seek professional guidance when needed. Your devotion to ergonomic excellence today secures a better, more productive tomorrow.

    For tailored standing desk suggestions based on your ergonomic needs, check out our detailed reviews at Flexi Desk Reviews. Fatima and our team assess each model extensively to ensure best ergonomic performance for every user.
    About the Author: Fatima is the Lead Ergonomics Specialist at Flexi Desk Reviews, with over 8 years of expertise in workplace ergonomics and sit-stand workstation setup. She has personally tested more than 50 standing desk models and helped thousands of users attain perfect ergonomic setups.

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