Push up Weight Calculator Male

Push Up Weight Calculator for Males – Estimate Added Weight body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; background-color: #f8f9fa; color: #333; margin: 0; padding: 0; display: flex; justify-content: center; padding-top: 20px; padding-bottom: 40px; } .container { width: 100%; max-width: 980px; margin: 0 auto; padding: 20px; background-color: #ffffff; border-radius: 8px; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); } h1, h2, h3 { color: #004a99; text-align: center; margin-bottom: 20px; } h1 { font-size: 2.5em; } h2 { font-size: 1.8em; border-bottom: 2px solid #004a99; padding-bottom: 10px; margin-top: 40px; } h3 { font-size: 1.4em; margin-top: 30px; color: #0056b3; } .calculator-section { background-color: #e9ecef; padding: 30px; border-radius: 8px; margin-bottom: 30px; } .loan-calc-container { display: flex; flex-direction: column; gap: 20px; } .input-group { margin-bottom: 15px; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: #004a99; } .input-group input[type="number"], .input-group select { width: calc(100% – 24px); padding: 12px; border: 1px solid #ccc; border-radius: 4px; font-size: 1em; transition: border-color 0.3s ease; } .input-group input[type="number"]:focus, .input-group select:focus { border-color: #007bff; outline: none; } .input-group small { display: block; margin-top: 5px; color: #6c757d; font-size: 0.9em; } .error-message { color: #dc3545; font-size: 0.9em; margin-top: 5px; display: none; } .error-message.visible { display: block; } button { background-color: #007bff; color: white; border: none; padding: 12px 25px; border-radius: 5px; font-size: 1.1em; cursor: pointer; transition: background-color 0.3s ease, transform 0.2s ease; margin-right: 10px; } button:hover { background-color: #0056b3; transform: translateY(-1px); } button#resetBtn { background-color: #6c757d; } button#resetBtn:hover { background-color: #5a6268; } button#copyBtn { background-color: #28a745; margin-left: 10px; } button#copyBtn:hover { background-color: #218838; } .results-container { margin-top: 30px; padding: 25px; background-color: #fff; border: 1px solid #004a99; border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 74, 153, 0.1); } .primary-result { font-size: 2em; font-weight: bold; color: #fff; background-color: #28a745; padding: 15px 20px; border-radius: 5px; text-align: center; margin-bottom: 20px; } .intermediate-results p, .assumptions p { margin-bottom: 10px; font-size: 1em; } .intermediate-results strong, .assumptions strong { color: #004a99; } .formula-explanation { margin-top: 20px; font-style: italic; color: #555; text-align: center; } canvas { display: block; margin: 20px auto; max-width: 100%; border: 1px solid #ddd; border-radius: 5px; } table { width: 100%; border-collapse: collapse; margin-top: 20px; margin-bottom: 30px; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05); } th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #ddd; } th { background-color: #004a99; color: white; font-weight: bold; } tr:nth-child(even) { background-color: #f2f2f2; } tr:hover { background-color: #e9ecef; } .article-content { margin-top: 40px; background-color: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); } .article-content p, .article-content ul, .article-content ol { margin-bottom: 20px; } .article-content li { margin-bottom: 10px; } .article-content a { color: #007bff; text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-item { margin-bottom: 20px; } .faq-item h3 { cursor: pointer; color: #0056b3; margin-bottom: 5px; text-align: left; font-size: 1.2em; } .faq-item p { display: none; padding-left: 15px; border-left: 3px solid #007bff; } .faq-item p.visible { display: block; } #relatedTools ul { list-style: none; padding: 0; } #relatedTools li { margin-bottom: 15px; padding-bottom: 10px; border-bottom: 1px dashed #eee; } #relatedTools li:last-child { border-bottom: none; } #relatedTools a { font-weight: bold; } #relatedTools p { margin-top: 5px; font-size: 0.9em; color: #555; } .legend { text-align: center; margin-top: 10px; font-size: 0.9em; color: #6c757d; } .legend span { display: inline-block; margin: 0 10px; } .legend .male-color { display: inline-block; width: 15px; height: 15px; background-color: #007bff; margin-right: 5px; vertical-align: middle; } .legend .female-color { display: inline-block; width: 15px; height: 15px; background-color: #ff69b4; margin-right: 5px; vertical-align: middle; }

Push Up Weight Calculator for Males

Estimate the effective weight you lift during push-ups.

Push Up Weight Calculator

Enter your weight in kilograms (kg).
Standard Push-up (90 degrees) Incline Push-up (e.g., hands on elevated surface) Decline Push-up (e.g., feet elevated) Slight Incline Steeper Incline Slight Decline Steeper Decline Angle relative to horizontal. 0 degrees is standard. Positive for incline, negative for decline.
Enter your body fat percentage (%). This is used to estimate lean mass, but not strictly required for the core calculation.
— kg

Effective Weight Lifted (kg): kg

Percentage of Body Weight Lifted: %

Estimated Lean Body Mass (kg): kg (Calculated using optional body fat percentage)

The effective weight lifted during a push-up is approximated by: Body Weight * (0.5 + 0.5 * cos(Angle in Radians)). For male athletes, research often suggests a slightly higher percentage is lifted, around 60-70% for standard push-ups, but this formula provides a general physics-based estimate.

Effective Weight Lifted vs. Angle

75kg Male (Standard) 90kg Male (Standard)

Push-up Variations & Weight Lifted

This table shows the estimated weight lifted for a 75kg male at different angles.

Push-up Type Angle (Degrees) Cos(Angle) Formula Factor (0.5 + 0.5*cos) Effective Weight (kg)

{primary_keyword}

{primary_keyword} is a tool designed to help male individuals understand the biomechanical forces involved in performing a push-up exercise. It estimates the portion of their total body weight that their muscles are effectively lifting and moving throughout the exercise's range of motion. This calculation is based on physics principles, primarily the angle at which the push-up is performed and the individual's body mass.

Who Should Use It:

  • Male Athletes and Fitness Enthusiasts: To better gauge training intensity and progress. Understanding the weight lifted can help in designing more targeted strength training programs.
  • Individuals interested in Biomechanics: To learn how body positioning affects the load on muscles.
  • Coaches and Trainers: To provide more precise feedback and program design for male clients.

Common Misconceptions:

  • Myth: You always lift 100% of your body weight. In reality, the percentage varies significantly with the push-up angle. Standard push-ups lift roughly 60-70% of body weight, not 100%.
  • Myth: It's only about upper body strength. While the upper body is primary, core strength is crucial for maintaining the stable body angle required for accurate calculations.
  • Myth: The calculation is overly complex and not useful. The underlying physics is straightforward, and understanding the effective weight can be a powerful motivator and guide for training adjustments.

{primary_keyword} Formula and Mathematical Explanation

The {primary_keyword} calculation relies on basic physics principles related to leverage and angles. When you perform a push-up, your body acts as a lever, and the force you exert is against gravity, lifting a portion of your body weight.

Step-by-Step Derivation:

1. Body Weight (BW): This is the total mass of the individual in kilograms.

2. Push-up Angle (θ): This is the angle your body makes with the horizontal surface during the push-up. A standard push-up is often considered to be close to 90 degrees relative to the ground when in the plank position, but the *effective angle* influencing the lever arm is what matters. A common model simplifies this, and research indicates that a standard push-up requires lifting approximately 60-70% of body weight. A more precise physics model, often simplified for calculators, uses the angle of inclination/decline relative to the *horizontal* floor. If your hands are on the floor and feet are also on the floor, the push-up is close to horizontal, but the *force vector* against gravity matters. A simplified physics approximation for the weight lifted (W_lifted) based on the angle (θ) your body makes with the *horizontal* is:

W_lifted = BW * (0.5 + 0.5 * cos(θ_rad))

Where:

  • BW is the body weight.
  • θ_rad is the angle in radians. If the calculator uses degrees, it must be converted: θ_rad = θ_deg * (π / 180).

This formula is a simplification. For a standard push-up (feet on floor, hands on floor), the angle might be considered close to 90 degrees to the ground, meaning 0 degrees to the horizontal plane, giving cos(0) = 1, so W_lifted = BW * (0.5 + 0.5 * 1) = BW. However, this is not what is observed. A more practical interpretation, often found in fitness calculators, is that a standard push-up (hands shoulder-width apart on the floor) lifts approximately 60-70% of body weight. Inclined push-ups (hands elevated) reduce the weight lifted, and declined push-ups (feet elevated) increase it. The calculator uses an angle input that represents the deviation from a standard horizontal push-up or the angle of the body relative to the horizontal floor.

3. Lean Body Mass (LBM): Calculated using body fat percentage (BFP):

LBM = BW * (1 - BFP / 100)

While LBM isn't directly used in the primary "weight lifted" calculation, it's a key metric for assessing body composition and muscle mass, which indirectly influences strength potential.

Variable Explanations:

Variable Meaning Unit Typical Range (Male)
BW Body Weight kg 50 – 120+ kg
θ Push-up Angle (relative to horizontal) Degrees -90 to +90 (practical range ~ -45 to +45)
θ_rad Push-up Angle in Radians Radians -1.57 to +1.57 (practical range ~ -0.785 to +0.785)
W_lifted Effective Weight Lifted kg 25 – 100+ kg
BFP Body Fat Percentage % 5% – 30%+
LBM Lean Body Mass kg 40 – 100+ kg

Practical Examples (Real-World Use Cases)

Example 1: Standard Push-up Assessment

Scenario: A male individual weighing 80 kg wants to know how much weight he lifts during a standard push-up. He performs push-ups with his hands and feet on the floor (angle approximation: 0 degrees relative to horizontal floor for effective lever). His body fat percentage is 18%.

Inputs:

  • Body Weight: 80 kg
  • Push-up Angle: 0 degrees (Standard Push-up)
  • Body Fat Percentage: 18%

Calculation:

  • Angle in Radians = 0 * (π / 180) = 0 radians
  • Effective Weight Lifted = 80 kg * (0.5 + 0.5 * cos(0)) = 80 kg * (0.5 + 0.5 * 1) = 80 kg * 1 = 80 kg. (Note: This simplified physics model often overestimates standard push-ups. The calculator adjusts based on common fitness understanding, yielding ~65-70% for 0 degrees). Using the calculator's adjusted logic for 0 degrees: ~65% of 80kg = 52 kg.
  • Percentage of Body Weight Lifted = 52 kg / 80 kg * 100 = 65%
  • Lean Body Mass = 80 kg * (1 – 18 / 100) = 80 kg * 0.82 = 65.6 kg

Interpretation: This 80 kg male lifts approximately 52 kg (or 65% of his body weight) during a standard push-up. This information helps him understand the intensity of the exercise and set realistic goals for increasing repetitions or progressing to more challenging variations.

Example 2: Incline Push-up for Rehabilitation

Scenario: A male recovering from a shoulder injury weighs 70 kg. His physical therapist recommends incline push-ups against a wall or elevated surface to reduce the load. He performs them with his hands on a bench set at waist height, making an approximate 30-degree incline relative to the floor.

Inputs:

  • Body Weight: 70 kg
  • Push-up Angle: 30 degrees (Incline)
  • Body Fat Percentage: 22%

Calculation:

  • Angle in Radians = 30 * (π / 180) ≈ 0.524 radians
  • Effective Weight Lifted = 70 kg * (0.5 + 0.5 * cos(0.524)) ≈ 70 kg * (0.5 + 0.5 * 0.866) ≈ 70 kg * (0.5 + 0.433) ≈ 70 kg * 0.933 ≈ 65.3 kg. (Again, calculator adjusts for typical fitness findings, yielding ~40% for 30 degrees). Using the calculator's adjusted logic for 30 degrees: ~40% of 70kg = 28 kg.
  • Percentage of Body Weight Lifted = 28 kg / 70 kg * 100 = 40%
  • Lean Body Mass = 70 kg * (1 – 22 / 100) = 70 kg * 0.78 = 54.6 kg

Interpretation: This 70 kg male is lifting approximately 28 kg (or 40% of his body weight) during the incline push-up. This reduced load makes the exercise suitable for rehabilitation and allows him to focus on form and muscle activation without excessive strain, facilitating his recovery and gradual strength regain.

How to Use This {primary_keyword} Calculator

Using the {primary_keyword} calculator is simple and provides valuable insights into your push-up training.

Step-by-Step Instructions:

  1. Enter Your Body Weight: Input your current weight in kilograms (kg) into the 'Your Body Weight' field.
  2. Select Push-up Angle: Choose the angle that best represents the push-up variation you are performing or interested in.
    • 'Standard Push-up (90 degrees)' typically refers to hands and feet on the same level.
    • Positive angles (e.g., 15, 30, 45 degrees) represent incline push-ups (hands elevated). A higher degree means a more elevated hand position and less weight lifted.
    • Negative angles (e.g., -15, -30 degrees) represent decline push-ups (feet elevated). A more negative degree means a higher foot elevation and more weight lifted.
  3. (Optional) Enter Body Fat Percentage: For a more complete picture, input your body fat percentage. This allows the calculator to estimate your Lean Body Mass (LBM).
  4. Click 'Calculate Weight Lifted': Once your inputs are entered, click the button to see the results.
  5. Review Results: The calculator will display:
    • Effective Weight Lifted: The primary result, showing the estimated weight in kg.
    • Percentage of Body Weight Lifted: Puts the effective weight into context.
    • Estimated Lean Body Mass: If body fat percentage was provided.
  6. Use the Buttons:
    • Reset: Clears all fields and restores default values.
    • Copy Results: Copies the main result, intermediate values, and key assumptions to your clipboard for easy sharing or note-taking.

How to Read Results:

The 'Effective Weight Lifted' tells you the load your muscles are handling. A higher number means a more challenging exercise. The 'Percentage of Body Weight Lifted' is a normalized metric, useful for comparing different exercises or variations.

Decision-Making Guidance:

  • If you want to increase strength: Focus on standard or decline push-ups (angles closer to 0 or negative) to lift more weight.
  • If you are recovering from injury or a beginner: Use incline push-ups (positive angles) to decrease the weight lifted and focus on form.
  • To build endurance: Perform standard push-ups and aim for higher repetitions, knowing the effective weight you are managing.

Key Factors That Affect {primary_keyword} Results

While the calculator provides a physics-based estimate, several real-world factors can influence the actual weight lifted during a push-up:

  1. Body Composition: Even with optional body fat percentage, variations in muscle density and distribution can affect the perceived effort and actual load. Higher muscle mass generally correlates with greater strength potential. This is why understanding Lean Body Mass is beneficial.
  2. Push-up Form and Technique: Maintaining a rigid torso and proper body alignment is crucial. A sagging core or excessively bent hips changes the leverage dynamics, impacting the weight distribution and calculation accuracy. Consistent form ensures reliable intensity measurement.
  3. Hand and Foot Placement: The width of your hand stance and the distance of your feet from your body can slightly alter the leverage and muscle activation patterns, subtly affecting the effective weight. Wider stances often engage the chest more, while narrower stances target triceps.
  4. Range of Motion (ROM): Performing a full push-up (chest nearly touching the floor) versus a partial push-up significantly changes the work done and the peak force required. The calculator assumes a standard ROM, but deep push-ups increase the challenge.
  5. Surface Resistance: The grip and stability provided by the surface (e.g., soft mat vs. hard floor) can influence the effort required. A very slippery surface might necessitate extra muscle activation just for stability.
  6. Muscle Fatigue: As muscles fatigue, form may degrade, potentially altering the leverage and the effective weight calculation. The calculator provides a snapshot based on ideal conditions.
  7. Progression Strategies: Understanding the weight lifted helps in applying progressive overload, a key principle of strength training. Gradually increasing the load (e.g., by moving from incline to standard push-ups) is essential for continuous improvement.
  8. Individual Biomechanics: Limb lengths and joint angles vary between individuals. These unique anatomical differences can lead to slight variations in how body weight is distributed and lifted during the exercise.

Frequently Asked Questions (FAQ)

Q1: What is the ideal angle for a standard push-up?

A standard push-up is typically performed with hands shoulder-width apart and feet on the floor, creating a relatively straight line from head to heels. This corresponds to an angle close to 0 degrees relative to the horizontal plane in many calculator models, where the body is parallel to the ground. The calculator's 'Standard Push-up (90 degrees)' option is set to reflect this common understanding, yielding roughly 60-70% of body weight lifted.

Q2: Does the calculator account for different body types (e.g., muscular vs. less muscular)?

The primary calculation uses body weight and angle. Body fat percentage is optional and helps estimate Lean Body Mass (LBM). While LBM indicates muscle mass, the calculator doesn't directly adjust the 'weight lifted' based on muscle density or distribution, which can vary significantly among individuals and affect perceived exertion.

Q3: Is the 60-70% estimate for standard push-ups universally accepted?

It's a widely cited range based on biomechanical studies and practical observations. However, exact percentages can vary based on individual anthropometry (limb lengths, torso proportions) and precise execution. The calculator provides a strong estimate, but personal experience may differ slightly.

Q4: How do incline and decline push-ups change the weight lifted?

Incline push-ups (hands elevated) reduce the angle relative to the horizontal, decreasing the effective weight lifted. Decline push-ups (feet elevated) increase the angle, thus increasing the effective weight lifted. The calculator models this change based on the selected angle.

Q5: Can I use this calculator for women?

This specific calculator is optimized for the term "{primary_keyword}" targeting male users. While the basic physics applies broadly, factors like average body composition and strength levels can differ. A dedicated calculator for women might yield slightly different typical ranges or formulas reflecting those differences.

Q6: What is Lean Body Mass (LBM) and why is it important?

LBM includes everything in your body except fat – muscles, bones, organs, and water. It's a better indicator of metabolic rate and muscle-building potential than total body weight alone. Higher LBM generally correlates with greater strength capacity.

Q7: How can I use the results to improve my push-ups?

If you lift a weight that feels too easy for your target reps, consider progressing to a decline push-up or a standard push-up if you're currently doing incline. If it's too hard, use incline push-ups to build strength and form before moving to standard variations. Track your progress using the calculator as you change angles or notice strength gains.

Q8: Are there other exercises where a similar calculation applies?

Yes, similar biomechanical principles apply to other bodyweight exercises like squats, lunges, and dips. The effective load depends on the exercise's angle, body positioning, and the distribution of body mass relative to the point of force application.

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// — Calculator Logic — // Function to convert degrees to radians function degreesToRadians(degrees) { return degrees * Math.PI / 180; } // Function to validate input function validateInput(value, id, errorMessageId, min = -Infinity, max = Infinity) { var errorElement = document.getElementById(errorMessageId); errorElement.classList.remove('visible'); var inputElement = document.getElementById(id); if (value === "") { errorElement.textContent = "This field cannot be empty."; errorElement.classList.add('visible'); return false; } var numberValue = parseFloat(value); if (isNaN(numberValue)) { errorElement.textContent = "Please enter a valid number."; errorElement.classList.add('visible'); return false; } if (numberValue max) { errorElement.textContent = "Value out of range. Please check the limits."; errorElement.classList.add('visible'); return false; } return true; } // Main calculation function function calculatePushUpWeight() { var bodyWeightInput = document.getElementById('bodyWeight'); var pushUpAngleInput = document.getElementById('pushUpAngle'); var bodyFatPercentageInput = document.getElementById('bodyFatPercentage'); var bodyWeightError = document.getElementById('bodyWeightError'); var pushUpAngleError = document.getElementById('pushUpAngleError'); var bodyFatPercentageError = document.getElementById('bodyFatPercentageError'); var isValid = true; // Validate Body Weight var bodyWeight = parseFloat(bodyWeightInput.value); if (!validateInput(bodyWeightInput.value, 'bodyWeight', 'bodyWeightError', 1, 1000)) { isValid = false; } // Validate Push-up Angle (Select input is less prone to invalid numbers, but checking range is good) var pushUpAngle = parseInt(pushUpAngleInput.value); if (isNaN(pushUpAngle)) { // Should not happen with select but good practice pushUpAngleError.textContent = "Invalid angle selected."; pushUpAngleError.classList.add('visible'); isValid = false; } // Validate Body Fat Percentage (Optional, but validate if entered) var bodyFatPercentage = 0; // Default if not entered or invalid var leanBodyMass = 0; if (bodyFatPercentageInput.value !== "") { if (!validateInput(bodyFatPercentageInput.value, 'bodyFatPercentage', 'bodyFatPercentageError', 0, 100)) { isValid = false; } else { bodyFatPercentage = parseFloat(bodyFatPercentageInput.value); leanBodyMass = bodyWeight * (1 – bodyFatPercentage / 100); document.getElementById('leanBodyMass').textContent = leanBodyMass.toFixed(1); } } else { document.getElementById('leanBodyMass').textContent = "–"; // Reset if field is empty } if (!isValid) { // Clear results if any input is invalid document.getElementById('mainResult').textContent = "– kg"; document.getElementById('effectiveWeight').textContent = "–"; document.getElementById('percentageOfBodyWeight').textContent = "–"; return; } // — Actual Calculation Logic — // Adjusted formula based on common fitness understanding for push-ups: // Standard push-up (0 deg relative to horizontal) lifts ~65% // Incline decreases this, Decline increases this. // A simplified model: Weight Lifted = BW * (0.5 + 0.5 * cos(angle_rad)) // However, real-world data suggests standard pushups (0 deg) are ~65%. // Let's use a model that scales from ~65% at 0 deg, up to ~90% at -45 deg, down to ~30% at +45 deg. var effectiveWeight; var percentageOfBodyWeight; // Map angle to a percentage factor (0.5 to 1.0 based on common fitness estimates) // This is an empirical adjustment, not pure physics formula var angleFactor; if (pushUpAngle >= 0) { // Incline push-ups angleFactor = 0.5 + (0.5 * (1 – pushUpAngle / 45)); // Scales down from 0.5 at 45deg to 1.0 at 0deg if (pushUpAngle > 45) angleFactor = 0.5; // Cap incline effect } else { // Decline push-ups angleFactor = 1.0 + (-pushUpAngle / 45) * 0.3; // Scales up from 1.0 at 0 deg to ~1.3 at -45 deg if (pushUpAngle = 0) { // Incline effectivePercentage = basePercentage – (adjustedAngle / 45) * angleInfluence; } else { // Decline effectivePercentage = basePercentage + (-adjustedAngle / 45) * angleInfluence; } // Ensure percentage stays within reasonable bounds (e.g., 30% to 90%) effectivePercentage = Math.max(0.30, Math.min(0.90, effectivePercentage)); effectiveWeight = bodyWeight * effectivePercentage; percentageOfBodyWeight = effectivePercentage * 100; // Update results display document.getElementById('mainResult').textContent = effectiveWeight.toFixed(1) + " kg"; document.getElementById('effectiveWeight').textContent = effectiveWeight.toFixed(1); document.getElementById('percentageOfBodyWeight').textContent = percentageOfBodyWeight.toFixed(1); // Update Table updatePushUpTable(bodyWeight); // Update Chart updateChart(bodyWeight); } // Function to update the results table function updatePushUpTable(currentBodyWeight) { var tableBody = document.getElementById('pushUpTableBody'); tableBody.innerHTML = "; // Clear existing rows var angles = [-45, -30, -15, 0, 15, 30, 45]; var angleNames = ["Steeper Decline", "Decline", "Slight Decline", "Standard", "Slight Incline", "Incline", "Steeper Incline"]; for (var i = 0; i = 0) { // Incline effectivePercentage = basePercentage – (angleDeg / 45) * angleInfluence; } else { // Decline effectivePercentage = basePercentage + (-angleDeg / 45) * angleInfluence; } effectivePercentage = Math.max(0.30, Math.min(0.90, effectivePercentage)); var effectiveWeight = currentBodyWeight * effectivePercentage; var cosAngle = Math.cos(angleRad).toFixed(3); var formulaFactor = (0.5 + 0.5 * cosAngle).toFixed(3); // This factor is based on simplified physics, not directly used for final % var row = tableBody.insertRow(); row.innerHTML = ` ${angleNames[i]} ${angleDeg} ${cosAngle} ${formulaFactor} ${effectiveWeight.toFixed(1)} `; } } // Function to update the chart function updateChart(currentBodyWeight) { var ctx = document.getElementById('weightAngleChart').getContext('2d'); if (window.weightAngleChartInstance) { window.weightAngleChartInstance.destroy(); // Destroy previous chart instance } var labels = []; var data1 = []; // For 75kg male var data2 = []; // For 90kg male var angles = [-45, -30, -15, 0, 15, 30, 45]; var basePercentage = 0.65; var angleInfluence = 0.40; for (var i = 0; i = 0) { effectivePercentage = basePercentage – (angleDeg / 45) * angleInfluence; } else { effectivePercentage = basePercentage + (-angleDeg / 45) * angleInfluence; } effectivePercentage = Math.max(0.30, Math.min(0.90, effectivePercentage)); data1.push((75 * effectivePercentage).toFixed(1)); // 75kg male data2.push((90 * effectivePercentage).toFixed(1)); // 90kg male } window.weightAngleChartInstance = new Chart(ctx, { type: 'line', data: { labels: labels, datasets: [{ label: '75kg Male', data: data1, borderColor: '#007bff', // Primary color backgroundColor: 'rgba(0, 123, 255, 0.1)', fill: false, tension: 0.4 }, { label: '90kg Male', data: data2, borderColor: '#28a745', // Success color backgroundColor: 'rgba(40, 167, 69, 0.1)', fill: false, tension: 0.4 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Effective Weight Lifted (kg)' } }, x: { title: { display: true, text: 'Push-up Angle (Degrees)' } } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || "; if (label) { label += ': '; } if (context.parsed.y !== null) { label += context.parsed.y + ' kg'; } return label; } } } } } }); } // Function to toggle FAQ answers function toggleFaq(header) { var content = header.nextElementSibling; content.classList.toggle('visible'); } // Event listeners document.getElementById('calculateBtn').addEventListener('click', calculatePushUpWeight); document.getElementById('resetBtn').addEventListener('click', function() { document.getElementById('bodyWeight').value = '75'; document.getElementById('pushUpAngle').value = '0'; document.getElementById('bodyFatPercentage').value = '15'; // Clear errors var errors = document.querySelectorAll('.error-message'); for (var i = 0; i < errors.length; i++) { errors[i].textContent = ''; errors[i].classList.remove('visible'); } calculatePushUpWeight(); // Recalculate with defaults }); document.getElementById('copyBtn').addEventListener('click', function() { var mainResult = document.getElementById('mainResult').textContent; var effectiveWeight = document.getElementById('effectiveWeight').textContent; var percentageOfBodyWeight = document.getElementById('percentageOfBodyWeight').textContent; var leanBodyMass = document.getElementById('leanBodyMass').textContent; var bodyWeight = document.getElementById('bodyWeight').value; var pushUpAngle = document.getElementById('pushUpAngle').value; var bodyFatPercentage = document.getElementById('bodyFatPercentage').value; var assumptions = `Assumptions:\n- Body Weight: ${bodyWeight} kg\n- Push-up Angle: ${pushUpAngle} degrees\n- Body Fat Percentage: ${bodyFatPercentage === '' ? 'Not provided' : bodyFatPercentage + '%'}`; var resultsText = `— Push Up Weight Calculation Results —\n\n`; resultsText += `Primary Result: ${mainResult}\n`; resultsText += `Effective Weight Lifted: ${effectiveWeight} kg\n`; resultsText += `Percentage of Body Weight Lifted: ${percentageOfBodyWeight} %\n`; if (leanBodyMass !== '–') { resultsText += `Estimated Lean Body Mass: ${leanBodyMass} kg\n`; } resultsText += `\n${assumptions}`; navigator.clipboard.writeText(resultsText).then(function() { // Optionally provide feedback var originalText = this.textContent; this.textContent = 'Copied!'; setTimeout(function() { this.textContent = originalText; }.bind(this), 1500); }.bind(this)).catch(function(err) { console.error('Failed to copy: ', err); alert('Failed to copy results. Please copy manually.'); }); }); // Initial calculation on page load document.addEventListener('DOMContentLoaded', function() { // Load Chart.js dynamically if not present if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.9.1/dist/chart.min.js'; // Use a specific version script.onload = function() { updatePushUpTable(parseFloat(document.getElementById('bodyWeight').value)); updateChart(parseFloat(document.getElementById('bodyWeight').value)); calculatePushUpWeight(); }; document.head.appendChild(script); } else { updatePushUpTable(parseFloat(document.getElementById('bodyWeight').value)); updateChart(parseFloat(document.getElementById('bodyWeight').value)); calculatePushUpWeight(); } });

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