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  • J K Exer Acute JK3920 bike. A light commercial grade quality at good mid price. Modern styling in Silver, Black & chrome. The JK3920 has advanced unique sweat fenders , a solid wide base, full micro seat height / position adjustability and a well balanced smooth chain drive  to 19Kg fly wheel drive. Patented horizontal level fine tuning for impecable stability at high spin is provided and safety emergency brake as standard. The V-brake acts for manual tension control. Robust oval tubing for light commercial grade durability. One for the enthusiast.  With these good looks and at this price the JK3920 Acute continues to be one of most popular cycles ever of its class!


    Finished in Silver, Black & Chrome

    Free Delivery:   2 - 3  Days
                                LAST ONE REMAINING
    Please note free delivery is for UK Mainland only this does not include Ireland please call on 0845 241 0435 for delivery prices.

    Includes:
    Free
    - Wrist & Chest belt Heart Rate Monitor - HR102
    Free - Gym Music CD - Cycle Revolutions Worth
              RRP £55.00 
              click banner adverts to your right for full details

 


Oregan HR102
Oregan HR102
£28.99

Cycle Revolution
Cycle Revolution
£22.99

JK 3920 Acute

J K Exer

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RRP price

:

£799.99

Web price

:

£699.99

Bargain price

:

£599.99

Save

:

£200.00
(25%)

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Product Review

JKs mid- entry offering is a solid fly wheel smooth model that belies its price.  Wide anchorage floor feet, dual form handle bars, solid racing seat with full height and horizontal adjustment, together with the ability to fine tune true ground levelling provide a good base spec for stable high speed spinning of the fly-wheel. This model even includes a well designed tucked away water bottle and holder.

All the specific models and manufacturers that appear short-listed in Gym Fitness\'s line up have been researched and selected as best in their category for features and value for money in the express opinion of trend e.com.

Facts About Cycles:
 
Cycling is one of the optimum form of stamina training. It improves heart function and circulation and strengthens leg muscles and/or tone. Cycling is ideally suited as cardiovascular warm up or full workout with exertion zones and pedal rate. Cycling is also a worthy addition or calorific
burning aid. Please check your heart beats per minute (BPM) against your age chart provided below.Indoor cycling is more rigorous.
Calories:
550-600 calories per hour
Body Primary:
Heart / Cardiovascular workout, aerobic endurance calorie burner.
Body Secondary:
Lower body conditioner develops lower & upper leg calf\'s. Minor toning of waist.
Equipment:
Indoor bikes are built for mimicking race bikes with free wheel capabilities. A large front wheel is balanced for smooth operation and allows high speed wheel spin and fast pedal action. Ideally suited to the race bike connoisseur, amateur and professional alike. Erogmeters are generally not presented in these machines. Power cables are therefore not generally required.
Heart Rate Control:
Not usually presented with this formal of equipment.
Mechanism:
Resistance is introduced more commonly by magnetic brake to flywheel belt/chain drive.
Look Out For:
Sturdy frame to your weight and personal strength ratio. As a guide use a bike which is capable with your normal weight with at least a 20% margin.  Seat comfort in line with normal race bike formats.  Seat adjustment is critical for ride
position so look for vertical and horizontal adjustment. Some of the better machines also allow levelling for perfect balancing of ride and the flywheel alignment, as well as the bike stability at high flywheel speeds. Review the brakes on bikes as safety is an issue with pedal engagement.  Callipers should always be present and safety mechanisms which disengage the pedals can be welcome.


Maximum Fat Burning Zones For Age Groups:
Age 20  work out at 145 heart beats per minute


Age 30  work out at 138 heart beats per minute


Age 40  work out at 130 heart beats per minute


Age 50  work out at 125 heart beats per minute


Age 60  work out at 118 heart beats per minute


Age 70  work out at 110 heart beats per minute


Age 80  work out at 103 heart beats per minute

Always work out according to your own medical
condition and personal doctors/trainers advice.
The above target heart rates are given for guidance
only.

 


 
 
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