Weighted Vest Walking and Rucking: Does Extra Weight Burn More Fat?

What is rucking, and how is it different from weighted vest walking?

Rucking is walking with a loaded backpack (a rucksack, hence the name). Weighted vest walking is the same idea with the load in a vest that sits close against your chest and upper back. Rucking comes from military load carriage. Both make an ordinary walk harder without running. The real questions are how much extra work the load adds, and whether that is worth the extra stress on your back, knees and feet.

New to walking for fat loss? Start with our walking for weight loss guide for steps a day, calories per pace and walking in Indian heat and pollution. This page covers only what the load changes.

Does weighted vest walking burn more calories?

Yes, but less than most people expect. A vest of 10% of your body weight raises the energy cost of a flat walk by about 7%, which for a 70 kg person at 5 km/h is roughly 9–10 extra kcal in 30 minutes. Walking up a 5% slope with no load at all raises it by about 55%.

Those figures come from the Pandolf equation (Pandolf, Givoni and Goldman, 1977), one of the most cited formulas for predicting the energy cost of walking with a load. A 2013 review by Potter and colleagues reprints it and notes that, of the equations it compared, only Pandolf's accounts for an external load, resting conditions and terrain. It gives metabolic rate in watts from body mass, load, speed, slope and surface. We ran it for the table below (one watt is about 0.86 kcal an hour); figures include what you would burn standing still.

Walking 1 km/h faster, or finding a gentle slope, does more for your calorie burn than a 14 kg vest. A 10% vest adds about 8 kcal per 30 minutes at 60 kg and about 11 at 80 kg. Treat these as estimates: Potter's review notes the equation was built from small groups of young male military volunteers (6 for the walking part).

Measured data point the same way, with a bigger jump at a heavy load. The 2024 Adult Compendium of Physical Activities rates treadmill walking at 2.5–2.9 mph (4.0–4.7 km/h) with no load at 3.5 METs, and at 2.5 mph with an 18.2 kg load at 4.8 METs. For a 70 kg person, that is about 123 versus 168 kcal in 30 minutes (our arithmetic: METs × kg × hours), but 18.2 kg is over a quarter of that person's body weight.

Is rucking good for weight loss, or just harder walking?

Rucking for weight loss works like any walking: it adds a little to the energy you use each day, and fat loss comes when that total stays above what you eat for weeks. A load adds roughly 3–15% to a walk's calorie cost, depending on the weight. It does not change where you lose fat.

There is a real effort effect. In a 2006 study in Medicine & Science in Sports & Exercise, Puthoff and colleagues had 10 young adults walk on a treadmill at five speeds in vests of 0, 10, 15 and 20% of body mass. Every vest raised oxygen use. Relative exercise intensity showed no significant vest effect at slower speeds but did at faster ones. The authors concluded that a weighted vest "can increase the metabolic costs, relative exercise intensity, and loading of the skeletal system during walking".

So the honest case for a vest is not burning more fat but making a walk you already do more demanding. For fat loss, food intake and total movement matter more: find your daily burn with the TDEE calculator, a target with the calorie deficit calculator, and see fat loss coaching.

Do weighted vests help bone density in women?

The evidence is mixed and does not support vest walking alone as a way to protect bone. Studies that found benefits combined the vest with jumping or strength exercises, and the largest trial, a vest worn during weight loss, found no difference in hip bone loss.

The INVEST in Bone Health trial (JAMA Network Open, 2025) is the strongest. Participants wore the vest a self-reported 7.1 hours a day, carrying 78% of the weight they had lost. The authors concluded that neither the vest nor progressive resistance training was able to mitigate weight-loss-associated bone loss at the hip, and that exercise may be insufficient on its own. The vest is not a shortcut to bone health; the programs that helped looked more like structured training than a walk.

For people with osteoporosis, the 2022 UK consensus statement "Strong, steady and straight" (British Journal of Sports Medicine) recommends muscle strengthening on two or three days a week, building to the most you can lift 8–12 times, plus impact exercise. It advises everyone with osteoporosis to avoid postures with a high degree of spinal flexion, and people with vertebral or multiple low-trauma fractures to usually keep impact to brisk-walking level. Our strength training for women over 40 guide shows how to start that kind of program.

Does a weighted vest help you keep muscle while dieting?

Not reliably. In the 2018 Normandin pilot, lean mass fell by a similar amount with or without a vest during 22 weeks of dieting, though the vest group kept more leg power. Programs that built strength, like Shaw and Snow's, used the vest as resistance for lower-body exercises, not just for walking. Our strength training goal page explains what a progressive program looks like.

How heavy should a weighted vest be?

None of the sources we read gives a recommended starting weight for healthy adults, so the guidance below is our coaching practice, not a research finding. We start most people at about 5% of body weight, and rarely go past 10% for general fitness walking.

For context, Puthoff used 10–20% of body mass in short treadmill tests on young adults, and the older-adult trials used vests that replaced weight lost while dieting. Military loads are heavier still: Knapik and colleagues' 2004 review notes that before the 18th century foot soldiers seldom carried more than 15 kg on the march, and loads have risen since.

• Starting load (our guidance): about 5% of body weight. That is 3 kg at 60 kg, 3.5 kg at 70 kg and 4 kg at 80 kg.
• Progression (our guidance): add 1–2 kg no more often than every one to two weeks, and only if the last three walks felt comfortable the next morning.
• Ceiling for general fitness (our guidance): about 10% of body weight. Past that, the extra calories are small and the stress on your feet, knees and back keeps rising.
• Change one thing at a time: weight, distance, speed or hills, never two in the same week.

Backpack or weighted vest: which is better?

A vest spreads the load around your trunk; a backpack is cheaper and you probably own one. Knapik's review reports that keeping the load's centre of mass close to the body's gives the lowest energy cost and keeps you upright, and recommends a rucksack hip belt whenever possible to take pressure off the shoulders.

You do not need to buy anything to try rucking. A school or office backpack with a few books works, as do rice or atta packets wrapped in a towel so they do not shift, or water bottles (a litre of water weighs a kilogram). Pack the heaviest items close to your back, pull the straps snug so nothing swings, and fasten any hip strap. If you stick with it, a vest with adjustable weights makes small increases easier.

Is rucking bad for your back and knees?

Not at sensible loads for most healthy people, but load carriage has a known injury pattern. Knapik's review lists the common injuries of prolonged load carriage as foot blisters, stress fractures, back strains, metatarsalgia (pain in the ball of the foot), rucksack palsy (nerve pressure from the shoulder straps) and knee pain. Those come from heavy military loads, but they show where to watch.

Back soreness is the most likely complaint at home. In the Normandin pilot, 5 of the 20 people asked to wear a vest daily reported back pain or soreness, at an average 6.7 hours a day. That is far longer than a walk, so we keep the vest for the walk only. Stand tall, keep your ribs over your hips, take normal strides and let your arms swing. With knee, hip or back problems, our Rehab & Recovery program is exercise coaching after a doctor or physiotherapist has cleared you; it is not physiotherapy or treatment.

A 6-week weighted vest walking plan for beginners

This plan assumes you can already walk briskly for 30 minutes, three times a week, without pain. Keep two short strength sessions a week alongside it. Loads are a percentage of body weight.

1. 1

   Week 1: no load, set your baseline

   Three 30-minute flat walks at a pace where you can talk in full sentences but not sing. Note how your back and feet feel the next morning.

2. 2

   Week 2: about 5% load for 20 minutes

   Three walks. Carry the vest or bag for the first 20 minutes, then take it off for the last 10. Keep the same pace as week 1. Do the side-on video check once.

3. 3

   Week 3: about 5% load for 30 minutes

   Three full 30-minute walks with the load, same flat route and pace. If anything aches the next day, repeat week 2 instead of moving on.

4. 4

   Week 4: about 7% load

   Add 1–1.5 kg (to about 5 kg for a 70 kg person). Three 30-minute walks. Keep the route flat this week; the new weight is the only change.

5. 5

   Week 5: same load, longer walk

   Two 30-minute walks and one 40-minute walk at about 7%. Or, instead of the longer walk, add a gentle slope or a flyover ramp to one route.

6. 6

   Week 6: choose one progression

   Either move to about 10% load on the flat, or keep 7% and add a hill or a slightly faster pace. Not both. Then repeat your week 1 route with the load and compare how it feels.

After six weeks, hills or speed are usually a better next step than more weight. If you are preparing for a trek, rucking with a loaded day pack fits neatly into the plan in our trek preparation guide.

Weighted vest training with a coach

MakeMyFitness is live one-to-one coaching on video for people in India, at ₹799 a session at your own gym or ₹899 at home, and it suits someone who wants a coach to check their posture under a vest, set the load, and add the strength work that walking alone does not give. Our coaches are fitness coaches, not doctors, dietitians or physiotherapists. Read the medical disclaimer before you start, and see what happens in a first session.