Arduino sensor data - arduino

Question

Hi I am using an Arduino Flex sensor to control a video game character.
The sensor data is being averaged and remapped to a value of between 0-6.
When the player flexes their bicep it reads the max value (this is perfect) however if the player flexes their arm hard and the sensor reads a max value of 6 for some reason as the player relaxes their arm the declining flex values are being passed into the game engine (instead of going from 6 to zero it drops from 6 to 5 to 4 to 3 to 2 to 1 before reaching zero). Can someone please advise how I should alter my code to make the sensor reading return to 0 instead of declining gradually?
#define NUM_LED 6 //sets the maximum numbers of LEDs
#define MAX_Low 75 //for people with low EMG activity
#define MAX_High 150//for people with high EMG activity
#define Threshold 3 // this sets the light to activate TENS
int reading[10];
int finalReading;
int MAX = 0;
int TENS =3;
int ledState = LOW;
byte litLeds = 0;
byte multiplier = 1;
byte leds[] = {8, 9, 10, 11, 12, 13};
char ch;
char contact;
void setup(){
Serial.begin(9600); //begin serial communications
digitalWrite(TENS, LOW);
for(int i = 0; i < NUM_LED; i++){ //initialize LEDs as outputs
pinMode(leds[i], OUTPUT);
pinMode(TENS, OUTPUT); // Set TENS output to StimPin
}
MAX = MAX_High; //This sets the default to people with high EMG activity.
}
void loop(){
for(int i = 0; i < 10; i++){ //take ten readings in ~0.02 seconds
reading[i] = analogRead(A0) * multiplier;
delay(2);
}
for(int i = 0; i < 10; i++){ //average the ten readings
finalReading += reading[i];
}
finalReading /= 10;
for(int j = 0; j < NUM_LED; j++)
{
digitalWrite(leds[j], LOW);//write all LEDs low and stim pin low
}
finalReading = constrain(finalReading, 0, MAX);
litLeds = map(finalReading, 0, MAX, 0, NUM_LED);
Serial.println(litLeds);
for(int k = 0; k < litLeds; k++){
digitalWrite(leds[k], HIGH); // This turns on the LEDS
}
{
// send data only when you receive data:
if (Serial.available() > 0)
{
ch = Serial.read();
contact=digitalRead(TENS);
if (ch == 'A' && contact==LOW)
{
digitalWrite(TENS, HIGH);
}
else if (ch == 'B' && contact==HIGH)
{
digitalWrite(TENS, LOW);
}
}
}
delay(80);
}

Answer 1

Your sensor doesn't read 6 and immediately 0, you are reading it so fast that you can read the intermediate values. For example: if player opens the arm very fast (250-300 ms, it is fast), you can take up to 3 readings then you can read 3 intermediate values.
You can add more time to the last delay() or use only a value that is the same that the 3 last readings to ensure that there isn't a fast change.